{"text_format":"1","workbook":"xlsx","n_sheets":7,"sheets":["General","LTC4283","LTC4284 Parallel","LTC4284High Stress Staged Start","LTC4284 Low Stress Staged Start","SpecSheet","Register Map"],"not_rendered":{"charts":0,"images":8,"macros":1,"external_links":0,"defined_names":0,"comments":0,"pivot_tables":0},"unopened":[],"bounds":{"document_bytes":16777216,"sheet_cells":100000,"rows_first":2000,"rows_last":500,"rows_between":2000,"halvings":0,"cell_chars":16384,"cell_head_chars":4096},"cells_cut":0,"cells_raw":0,"read":"whole","date_system":"1900"}

{"sheet":"General","index":0,"n_rows":155,"n_cols":17,"rows_kept":155,"cut":false,"hidden":false,"merged":[[130,1,130,3],[1,1,1,8],[86,1,86,5],[111,1,111,5],[41,1,41,5],[13,2,13,4],[12,2,12,4],[70,1,70,3],[39,1,39,5],[42,1,42,5],[27,1,27,3],[107,1,107,5],[126,1,126,5],[127,1,127,5]]}
[null,"Please enter the data in white cells"]
[null,"LTC4284 Design Tool"]
[]
[1,"System Specifications"]
[null,"Power Requirement (W)",1900,"W"]
[null,"Line Step","No","Yes","No"]
[null,"Voltage Supply Min (V)",-40,"V",{"$f":"ABS(C7)","v":40}]
[null,"Voltage Supply Max (V)",-70,"V",{"$f":"ABS(C8)","v":70}]
[null,"Nominal Voltage",-48,"V",{"$f":"ABS(C9)","v":48}]
[null,"Step Voltage",{"$f":"ABS(C8)-ABS(C7)","v":30},"V"]
[]
[null,"Topology Recommendations"]
[null,"Recommended Topology",{"$f":"IF(C5<800,\"LTC4283\",(IF((C5>800)*AND(C5<=1500),\"LTC4284 Parallel Topology\",(IF((C5>1500)*AND(C6=\"yes\"),\"LTC4284 High Stress Staged Start Topology\",(IF((C5>1500)*AND(C6=\"no\"),\"LTC4284 Low Stress Staged Start Topology\")))))))","v":"LTC4284 Low Stress Staged Start Topology"}]
[null,"Topology Selected","LTC4284 Low Stress Staged Start Topology",null,null,"Single","Parallel"]
[null,{"$f":"IF(C13=C14,\"\",\"The selected topology is not the recommended one for this system. You may not see all the cost and system reliability benefits in the selected topology\")","v":""}]
[]
[null,"Recommended Minimum Output Capacitor Value",{"$f":"C5","v":1900},"uF"]
[null,"Selected Output Capacitor Value",1900,"uF"]
[null,"Tolerance",5,"%"]
[null,null,"Min","Typ","Max"]
[null,"Actual Output Capacitor Value",{"$f":"C18-(C19/100*C18)","v":1805},{"$f":"C18","v":1900},{"$f":"C18+(C18*C19/100)","v":1995},"uF"]
[null,{"$f":"IF(C17<=C18,\"\",\"A higher value output is recommended for this power level\")","v":""}]
[null,{"$f":"_xlfn.CONCAT(\"Go to \",C14,\" tab to design the channel\")","v":"Go to LTC4284 Low Stress Staged Start Topology tab to design the channel"}]
[]
[null,"Selecting Rin"]
[]
[null,"Current drawn by External Components from INTVcc",10,"mA"]
[null,{"$f":"IF(C27>30,\"If current drawn by external components is >30mA, use external NPN between VIN and VZ pins. Refer to Input Power Supply section in the datasheet\",\"\")","v":""}]
[null,"Rin should be less than",{"$f":"(ABS(E7)-SpecSheet!I9)/(SpecSheet!I10+C27)","v":2},"kΩ"]
[null,"Selected Resistor Value",1,"kΩ"]
[null,"Power Rating of the Selected Resistor",0.5,"W"]
[null,"Resistor Tolerance","E96 (1%)"]
[null,"Resistor Tolerance Selected",{"$f":"Q46","v":1},"%"]
[null,"Allowed Power Disspiation In the Resistor Network",0.5,"W"]
[null,"Number of Resistors Required",{"$f":"IF(INT(((C27+General!I10)/1000)*SQRT(C30*1000/C34))>1,INT(((C27+General!I10)/1000)*SQRT(C30*1000/C34)),1)","v":1}]
[null,"Number of Resistors Installed",4]
[null,{"$f":"IF(OR((C35<C36),(C35=C36)),\"\",\"Number of resistors installed are less than the required resistors. Power Dissipation in them will be higher than the desired power dissipation. Please increase the number of resistors\")","v":""}]
[null,null,"Min","Typ","Max"]
[null,"Actual resistance",{"$f":"(D39-(C33*D39/100))","v":0.2475},{"$f":"ROUND(C30/C36,3)","v":0.25},{"$f":"(D39+(C33*D39/100))","v":0.2525},"kΩ"]
[null,{"$f":"IF(E39>C29,\"Effective Rin is more than the allowed value of Rin. Select a lower value of Rin\",\"\")","v":""}]
[null,"Power Dissipation in each resistor",{"$f":"((($C$27+SpecSheet!G10)/General!$C$36)^2)*General!C39/1000","v":1.5468750000000001E-3},{"$f":"((($C$27+SpecSheet!H10)/General!$C$36)^2)*General!D39/1000","v":2.44140625E-3},{"$f":"((($C$27+SpecSheet!I10)/General!$C$36)^2)*General!E39/1000","v":3.093125E-3},"kΩ"]
[]
[null,{"$f":"IF(E39>=C29,\"Maximum Rin value is higher than allowed maximum Rin. Change the value of Rin resistor network\",\"\")","v":""}]
[]
[null,null,null,null,null,null,null,null,null,null,"E96 (1%)",96,1,{"$f":"IF($C$32=K45,1,0)","v":1},null,"Active E","active %"]
[2,"Undervoltage Overvoltage Threshold Set up",null,null,null,null,null,null,null,null,"E192 (0.5%)",192,0.5,{"$f":"IF($C$32=K46,1,0)","v":0},null,{"$f":"IF(N45=1,96,192)","v":96},{"$f":"IF(N45=1,M45,IF(N46=1,M46,IF(N47=1,M47,IF(N48=1,M48,1))))","v":1}]
[null,null,null,null,null,null,null,null,null,null,"E192 (0.25%)",192,0.25,0]
[null,null,null,null,null,null,null,null,null,null,"E192 (0.1%)",192,0.1,0]
[null,"UV Falling",38.6,"V"]
[null,"OV Rising",71.900000000000006,"V"]
[]
[null,"Three Resistor Ladder"]
[null,"Ladder Current",100,"uA"]
[null,"R1+R2+R3",{"$f":"E9/C53*10^3","v":480},"kΩ"]
[null,"R1",{"$f":"SpecSheet!H13*C54/C50","v":9.386369958275381},"kΩ"]
[null,"R2",{"$f":"(SpecSheet!H12*C54/C49)-C55","v":13.407412425144308},"kΩ"]
[null,"R3",{"$f":"C54-C55-C56","v":457.20621761658032},"kΩ",null,null,null,null,null,null,null,null,"Resistor Power Rating"]
[null,null,null,null,null,null,null,null,null,null,null,null,0.05]
[null,"Recommended Standard Resistor Values",null,null,null,null,null,null,null,null,null,null,6.2E-2]
[null,"R1",{"$f":"ROUND(10^(ROUND((LOG10(C55)-INT(LOG10(C55)))*$P$46,0)/$P$46),2)*10^(INT(LOG10(C55)))","v":9.31},"kΩ",null,null,null,null,null,null,null,null,0.1]
[null,"R2",{"$f":"ROUND(10^(ROUND((LOG10(C56)-INT(LOG10(C56)))*$P$46,0)/$P$46),2)*10^(INT(LOG10(C56)))","v":13.3},"kΩ",null,null,null,null,null,null,null,null,0.125]
[null,"R3",{"$f":"ROUND(10^(ROUND((LOG10(C57)-INT(LOG10(C57)))*$P$46,0)/$P$46),2)*10^(INT(LOG10(C57)))","v":453},"kΩ",null,null,null,null,null,null,null,null,0.25]
[null,null,null,null,null,null,null,null,null,null,null,null,0.5]
[null,"Selected Standard Resistor Values ",null,null,null,null,null,null,null,null,null,null,1]
[null,"R1",10,"kΩ"]
[null,"R2",14.3,"kΩ"]
[null,"R3",487,"kΩ"]
[null,"Resistor Tolerance","E96 (1%)"]
[null,"Resistor Tolerance Selected",{"$f":"Q76","v":1},"%"]
[null,"Power Rating of the Resistors",0.125,"W"]
[null,{"$f":"IF((((C53/1000)^2*C65)>C70)*OR(((C53/1000)^2*C66)>C70)*OR(((C53/1000)^2*C67)>C70),\"Power dissipation in the resistors is more than the power rating of the resistor. Select a higher power rated resistor or decrease the current in resistor ladder\",\"\")","v":""}]
[null,"Actual Resistor Values"]
[null,null,"Min","Typ","Max"]
[null,"R1",{"$f":"C65-(C65*$C$69/100)","v":9.9},{"$f":"C65","v":10},{"$f":"C65+(C65*$C$69/100)","v":10.1},"kΩ"]
[null,"R2",{"$f":"C66-(C66*$C$69/100)","v":14.157},{"$f":"C66","v":14.3},{"$f":"C66+(C66*$C$69/100)","v":14.443000000000001},"kΩ",null,null,null,null,"E96 (1%)",96,1,{"$f":"IF($C$68=K75,1,0)","v":1},null,"Active E","active %"]
[null,"R3",{"$f":"C67-(C67*$C$69/100)","v":482.13},487,{"$f":"C67+(C67*$C$69/100)","v":491.87},"kΩ",null,null,null,null,"E192 (0.5%)",192,0.5,{"$f":"IF($C$68=K76,1,0)","v":0},null,{"$f":"IF(N75=1,96,192)","v":96},{"$f":"IF(N75=1,M75,IF(N76=1,M76,IF(N77=1,M77,IF(N78=1,M78,1))))","v":1}]
[null,null,null,null,null,null,null,null,null,null,"E192 (0.25%)",192,0.25,0]
[null,"Actual Threshold",null,null,null,null,null,null,null,null,"E192 (0.1%)",192,0.1,0]
[null,"UV Falling",{"$f":"SpecSheet!G12*(E74+C76+E75)/(E74+E75)","v":37.469400440044005},{"$f":"SpecSheet!H12*(D74+D75+D76)/(D74+D75)","v":38.568432098765427},{"$f":"SpecSheet!I12*(C74+E76+C75)/(C74+C75)","v":39.696590472627513},"V"]
[null,"UV Rising",{"$f":"SpecSheet!G11*(E74+E75+C76)/(E74+E75)","v":41.86663586358636},{"$f":"SpecSheet!H11*(D74+D75+D76)/(D74+D75)","v":43.09227983539094},{"$f":"SpecSheet!I11*(C74+C75+E76)/(C74+C75)","v":44.350377686328301},"V"]
[null,"OV Falling",{"$f":"(SpecSheet!G13-SpecSheet!I14)*(E74+C75+C76)/E74","v":67.885940396039601},{"$f":"(SpecSheet!H13-SpecSheet!H14)*(D74+D75+D76)/D74","v":70.661659999999998},{"$f":"(SpecSheet!I13-SpecSheet!G14)*(C74+E75+E76)/C74","v":73.521245454545436},"V"]
[null,"OV Rising",{"$f":"SpecSheet!G13*(E74+C75+C76)/E74","v":69.791158811881175},{"$f":"SpecSheet!H13*(D74+D75+D76)/D74","v":71.888779999999997},{"$f":"SpecSheet!I13*(C74+E75+E76)/C74","v":74.042672727272716},"V"]
[]
[]
[]
[3,"DRNS RTNS Resistive Divider"]
[null,"DRNS and RTNS are the inputs to a differential amplifier that measures the attenuated load voltage for dv/dt contorl at start up. In the event of an output overload or short circuit, the current limit foldback profile in normal operation depends upon the differential input between RTNS and DRNS that represents the output voltage across the load. The current limit starts to foldback when RTNS-DRNS drops below 0.9V and reached the minimum when RTNS-DRNS drops to zero."]
[]
[null,"Suggested Divider Ratio",{"$f":"ABS(C8)/1.8","v":38.888888888888886}]
[null,"Divider Ratio",40]
[null,"ADC Measurement Full Scale ",{"$f":"C90*2.048","v":81.92},"V"]
[null,{"$f":"IF(C91>E82,\"\",\"ADC Measurement Full Scale should be higher than maximum valid voltage. Chose a higher divider ratio\")","v":""}]
[null,"Resistor Tolerance","E96 (1%)"]
[null,"Resistor Tolerance Selected",{"$f":"Q96","v":1},"%"]
[null,null,null,null,null,null,null,null,null,null,"E96 (1%)",96,1,{"$f":"IF($C$93=K95,1,0)","v":1},null,"Active E","active %"]
[null,"Suggested RRT",200,"kΩ",null,null,null,null,null,null,"E192 (0.5%)",192,0.5,{"$f":"IF($C$93=K96,1,0)","v":0},null,{"$f":"IF(N95=1,96,192)","v":96},{"$f":"IF(N95=1,M95,IF(N96=1,M96,IF(N97=1,M97,IF(N98=1,M98,1))))","v":1}]
[null,"Installed RRT",200,"kΩ",null,null,null,null,null,null,"E192 (0.25%)",192,0.25,{"$f":"IF($C$93=K97,1,0)","v":0}]
[null,"Calculated RRB",{"$f":"C97/$C$90","v":5},"kΩ",null,null,null,null,null,null,"E192 (0.1%)",192,0.1,{"$f":"IF($C$93=K98,1,0)","v":0}]
[null,"Suggested RRB Standard Value",{"$f":"ROUND(10^(ROUND((LOG10(C98)-INT(LOG10(C98)))*$P$96,0)/$P$96),2)*10^(INT(LOG10(C98)))","v":4.99},"kΩ"]
[null,"Selected RRB Value",4.99,"kΩ"]
[null,{"$f":"IF(INT(C97/C100)=INT(C90),\"\",\"RRB should be selected so that ratio of RRT and RRB is equal to or close to Divider Ratio\")","v":""}]
[null,"RDT",{"$f":"C96","v":200},"kΩ"]
[null,"RDB",{"$f":"C100","v":4.99},"kΩ"]
[]
[null,{"$f":"IF(C97/C100=C102/C103,\"\",\"RRT vs. RRB ratio should be same as RDT vs. RDB ratio\")","v":""}]
[null,null,"Min","Typ","Max"]
[null,"Actual Divider Ratio",{"$f":"(C102-(Q96/100*C102))/(C103+(Q96*C103/100))","v":39.286493779638484},{"$f":"C102/C103","v":40.080160320641284},{"$f":"(C102+(Q96/100*C102))/(C103-(Q96*C103/100))","v":40.889860529139085}]
[null,"Setting VOUTTH Threshold Voltage"]
[null," Desired Power Good Signal Reset Voltage/ Current Foldback will engage below this voltage",38,"V"]
[null,"VOUTTH Resistor divider is connected to ","Vref"]
[]
[null,"RVOUTTH_TOP and RVOUTTH_BOT resistors installed between Vref or INTVCC and Vee set a voltage at VOUTTH pin. When RTNS-DRNS voltage goes below this VOUTTH voltage, VOUT Low Staus Bit is set which implies that power at the output is not good anymore. \nFor better accuracy, connect VOUTTH Resistor divider to Vref pin."]
[null,null,"Min","Typ","Max"]
[null,"VOUT Threshold",{"$f":"$C$109/E107","v":0.92932574257425749},{"$f":"$C$109/D107","v":0.94809999999999994},{"$f":"$C$109/C107","v":0.96725353535353542},"V"]
[null,{"$f":"IF(C110=\"Vref\",\"Vref\",\"INTVcc\")","v":"Vref"},{"$f":"IF(C110=\"Vref\",SpecSheet!G15,SpecSheet!G27)","v":1.01},{"$f":"IF(C110=\"Vref\",SpecSheet!H15,SpecSheet!H27)","v":1.024},{"$f":"IF(C110=\"Vref\",SpecSheet!I15,SpecSheet!I27)","v":1.038},"V"]
[]
[null,"Suggested RVOUTTH_BOT",20,"kΩ"]
[null,"Installed RVOUTTH_BOT",20,"kΩ"]
[null,"Calculated RVOUTTH_TOP",{"$f":"((D115/D114)-1)*C118","v":1.6010969307035161},"kΩ"]
[null,"Suggested RVOUTTH_TOP Standard Value",{"$f":"ROUND(10^(ROUND((LOG10(C119)-INT(LOG10(C119)))*$P$96,0)/$P$96),2)*10^(INT(LOG10(C119)))","v":1.62},"kΩ"]
[null,"Installed RVOUTTH_TOP",1.62,"kΩ"]
[]
[null,null,"Min","Typ","Max"]
[null,"Actual VOUT Threshold",{"$f":"(((C118-(C118*Q96/100))/((C121+(C121*Q96/100))+((C118-(C118*Q96/100))))))*C115","v":0.93290788479301379},{"$f":"(C118/(C121+C118))*D115","v":0.94727104532839967},{"$f":"(((C118+(C118*Q96/100))/(((C121-(C121*Q96/100))+((C118+(C118*Q96/100)))))))*E115","v":0.96164888689127581},"V"]
[null,"Actual Power Good Signal Reset Voltage / Current Limit will engage below this voltage",{"$f":"C124*C107","v":36.650679812896428},{"$f":"D124*D107","v":37.966775363863718},{"$f":"E124*E107","v":39.321688862986115},"V"]
[null,"Attenuation Ratio",{"$f":"((C102-(C102*Q96/100))+(C103+(C103*Q96/100)))/(C103+(C103*Q96/100))","v":40.286493779638484},{"$f":"(C102+C103)/C103","v":41.080160320641284},{"$f":"((C102+(C102*Q96/100))+(C103-(C103*Q96/100)))/(C103-(C103*Q96/100))","v":41.889860529139085}]
[null,{"$f":"IF(E125<C79,\"\",\"Current foldback should engage at a voltage below valid operating range (Min UV). Either increase the UV falling min voltage or lower the max of current foldback engagement voltage\")","v":"Current foldback should engage at a voltage below valid operating range (Min UV). Either increase the UV falling min voltage or lower the max of current foldback engagement voltage"}]
[null,{"$f":"IF(D125<D79,\"\",\"Current foldback should engage at a voltage below valid operating range. Either increase the UV falling min voltage or lower the max of current foldback engagement voltage\")","v":""}]
[]
[]
[null,{"$f":"_xlfn.CONCAT(\"Go to \",C14,\" tab to design the channel\")","v":"Go to LTC4284 Low Stress Staged Start Topology tab to design the channel"}]
[]
[]
[]
[]
[]
[]
[]
[]
[null,"Bill Of Meterials"]
[null,"Component","Value","Units","Quantity","Other Specs"]
[null,"R1",{"$f":"C65","v":10},{"$f":"D65","v":"kΩ"},1,{"$f":"_xlfn.CONCAT(C69,D69,\", \",C70,D70)","v":"1%, 0.125W"}]
[null,"R2",{"$f":"C66","v":14.3},"kΩ",1,{"$f":"_xlfn.CONCAT(C69,D69,\", \",C70,D70)","v":"1%, 0.125W"}]
[null,"R3",{"$f":"C67","v":487},"kΩ",1,{"$f":"_xlfn.CONCAT(C69,D69,\", \",C70,D70)","v":"1%, 0.125W"}]
[null,"Rin",{"$f":"C30","v":1},{"$f":"D30","v":"kΩ"},{"$f":"C36","v":4},{"$f":"_xlfn.CONCAT(C33,D33,\", \",C31,D31)","v":"1%, 0.5W"}]
[null,"RRT",{"$f":"C97","v":200},{"$f":"D97","v":"kΩ"},1,{"$f":"_xlfn.CONCAT($C$94:$D$94,\", \",\"0.25W\")","v":"1%, 0.25W"}]
[null,"RRB",{"$f":"C100","v":4.99},{"$f":"D100","v":"kΩ"},1,"1%, 0.25W"]
[null,"RDB",{"$f":"C103","v":4.99},{"$f":"D103","v":"kΩ"},1,"1%, 0.25W"]
[null,"RDT",{"$f":"C102","v":200},{"$f":"D102","v":"kΩ"},1,"1%, 0.25W"]
[null,"RVOUTTH_TOP",{"$f":"C118","v":20},{"$f":"D118","v":"kΩ"},1,"1%, 0.25W"]
[null,"RVOUTH_BOT",{"$f":"C121","v":1.62},{"$f":"D121","v":"kΩ"},1,"1%, 0.25W"]
[null,"RD",100,"kΩ",1,"1%, 0.25W"]
[null,"CVCC",1,"uF",1,"10% 50V"]
[null,"CIN",0.1,"uF",1,"10% 50V"]
[null,"CL",{"$f":"C18","v":1900},{"$f":"D18","v":"uF"},null,{"$f":"_xlfn.CONCAT(C19:D19,\", \",\"100V\")","v":"5%, 100V"}]

{"sheet":"LTC4283","index":1,"n_rows":166,"n_cols":17,"rows_kept":166,"cut":false,"hidden":false,"merged":[[0,1,0,3],[207,10,207,16],[50,2,50,4],[65,1,65,5],[63,1,63,5],[32,1,32,3],[33,1,33,3],[150,1,150,5],[151,1,151,5],[152,1,152,5]]}
[null,"LTC4283 Topology"]
[null,{"$f":"General!B1","v":"Please enter the data in white cells"}]
[null,{"$f":"General!B2","v":"LTC4284 Design Tool"}]
[]
[null,{"$f":"General!B4","v":"System Specifications"}]
[null,{"$f":"General!B5","v":"Power Requirement (W)"},{"$f":"General!C5","v":1900},{"$f":"General!D5","v":"W"}]
[null,{"$f":"General!B6","v":"Line Step"},{"$f":"General!C6","v":"No"}]
[null,{"$f":"General!B7","v":"Voltage Supply Min (V)"},{"$f":"General!E7","v":40},{"$f":"General!D7","v":"V"}]
[null,{"$f":"General!B8","v":"Voltage Supply Max (V)"},{"$f":"General!E8","v":70},{"$f":"General!D8","v":"V"}]
[null,{"$f":"General!B9","v":"Nominal Voltage"},{"$f":"General!E9","v":48},{"$f":"General!D9","v":"V"}]
[null,{"$f":"General!B18","v":"Selected Output Capacitor Value"},{"$f":"General!C18","v":1900},{"$f":"General!D18","v":"uF"}]
[null,{"$f":"General!B10","v":"Step Voltage"},{"$f":"General!C10","v":30},{"$f":"General!D10","v":"V"}]
[null,null,null,null,null,null,null,null,null,null,"Resistor Power Rating"]
[null,"Sense Resistor Selection",null,null,null,null,null,null,null,null,0.05]
[null,"Maximum Load Current",{"$f":"C6/ABS(C8)","v":47.5},"A",null,null,null,null,null,null,6.2E-2]
[null,"Current Limit",40,"A",null,null,null,null,null,null,0.1]
[null,{"$f":"IF(C16>=C15,\"\",\"Current limit should be set above the maximum load current\")","v":"Current limit should be set above the maximum load current"},null,null,null,null,null,null,null,null,0.125]
[null,"Maximum Current ",{"$f":"C16","v":40},"A",null,null,null,null,null,null,0.25]
[null,"Current Sense Voltage Threshold",1.4999999999999999E-2,"V",null,null,null,null,null,null,0.5]
[null,null,null,null,null,null,null,null,null,null,1]
[null,"Maximum Power Dissipation in Sense Resistor ",{"$f":"C19*C18","v":0.6},"W"]
[null,"Power Rating  of the Sense Resistor",0.25,"W"]
[null,"Suggested Allowed Power Dissipation in Sense Resistor",{"$f":"C22/2","v":0.125},"W"]
[null,"Allowed Power Dissipation in Sense Resistor",0.125,"W"]
[null,"Effective Rsense required ",{"$f":"C19/C18*1000","v":0.375},"mΩ"]
[null,"Suggested resistor value of Rsense",{"$f":"C25*C30","v":1.875},"mΩ"]
[null,"Installed resistor value for Rsense",2,"mΩ"]
[]
[null,"Rsense Tolerance","E96 (1%)"]
[null,"Number of Sense Resistors Required to achieve Rsense Power requirement",{"$f":"IF((C21/C24)>INT(C21/C24),INT(C21/C24)+1,INT(C21/C24))","v":5}]
[null,"Number of Rsense Required in Parallel to achieve Rsense resistance requirement",{"$f":"IF((C27/C25)>INT(C27/C25),INT(C27/C25)+1,INT(C27/C25))","v":6},null,null,null,null,null,null,null,"E96 (1%)",96,1,{"$f":"IF($C$29=K31,1,0)","v":1},null,"Active E","active %"]
[null,"Number of Sense Resistors Populated ",6,null,null,null,null,null,null,null,"E192 (0.5%)",192,0.5,{"$f":"IF($C$29=K32,1,0)","v":0},null,{"$f":"IF(N31=1,96,192)","v":96},{"$f":"IF(N31=1,M31,IF(N32=1,M32,IF(N33=1,M33,IF(N34=1,M34,1))))","v":1}]
[null,{"$f":"IF((C32)>=(C30),\"\",\"Need to add more sense resistors in order to achieve required safe power dissipation number\")","v":""},null,null,null,null,null,null,null,null,"E192 (0.25%)",192,0.25,0]
[null,{"$f":"IF(INT(C32)>=INT(C31),\"\",\"Need to add more sense resistors in order to achieve required effective Rsense Value\")","v":""},null,null,null,null,null,null,null,null,"E192 (0.1%)",192,0.1,{"$f":"IF($C$29=K34,1,0)","v":0}]
[null,null,"Min","Typ","Max"]
[null,"Actual Effective Rsense ",{"$f":"(C27-(C27*Q32/100))/C32","v":0.33},{"$f":"C27/C32","v":0.33333333333333331},{"$f":"(C27+(C27*Q32/100))/C32","v":0.33666666666666667},"mΩ"]
[]
[null,"Actual Current Sense Voltage Threshold",{"$f":"0.98*D38","v":1.47E-2},1.4999999999999999E-2,{"$f":"1.02*D38","v":1.5299999999999999E-2},"V"]
[null,"User might need to chose a differnet Current Sense Threshold Voltage based upon Actual Effective Rsense"]
[null,{"$f":"_xlfn.CONCAT(\"Current Sense Voltage Threshold [0x0D][7:4] should be programmed to value \")","v":"Current Sense Voltage Threshold [0x0D][7:4] should be programmed to value "},{"$f":"(IF(D38='Register Map'!E36,'Register Map'!D36,(IF(D38='Register Map'!E37,'Register Map'!D37,(IF(D38='Register Map'!E38,'Register Map'!D38,(IF(D38='Register Map'!E39,'Register Map'!D39,(IF(D38='Register Map'!E40,'Register Map'!D40,(IF(D38='Register Map'!E41,'Register Map'!D41,(IF(D38='Register Map'!E42,'Register Map'!D42,(IF(D38='Register Map'!E43,'Register Map'!D43,(IF(D38='Register Map'!E44,'Register Map'!D44,(IF(D38='Register Map'!E45,'Register Map'!D45,(IF(D38='Register Map'!E46,'Register Map'!D46,(IF(D38='Register Map'!E47,'Register Map'!D47,(IF(D38='Register Map'!E48,'Register Map'!D48,(IF(D38='Register Map'!E49,'Register Map'!D49,(IF(D38='Register Map'!E50,'Register Map'!D50,(IF(D38='Register Map'!E51,'Register Map'!D51,0))))))))))))))))))))))))))))))))","v":"0000"}]
[]
[]
[null,"Actual Maximum Current ",{"$f":"$C$38/E36*1000","v":43.663366336633658},{"$f":"$D$38/D36*1000","v":45},{"$f":"$E$38/C36*1000","v":46.36363636363636},"A"]
[null,"Actual Power Dissipation per Sense Resistor",{"$f":"$C$38*C43/INT($C$31)","v":0.10697524752475246},{"$f":"$D$38*D43/INT($C$31)","v":0.11249999999999999},{"$f":"$E$38*E43/INT($C$31)","v":0.11822727272727272},"W"]
[null,"Actual Current Limit for the System",{"$f":"C43","v":43.663366336633658},{"$f":"D43","v":45},{"$f":"E43","v":46.36363636363636},"A"]
[null,{"$f":"IF(E44>C24,\"Max Power dissipation per sense resistor is more than the allowed power dissipation. \",\"\")","v":""}]
[null,{"$f":"IF(E44>C24,\"Typ Power dissipation per sense resistor is more than the allowed power dissipation. Either increse the number of the sense resistors or power rating of the sense resistors\",\"\")","v":""}]
[null,{"$f":"IF(C45<C18,\"Min current limit is lower than desired current limit\",\"\")","v":""}]
[null,{"$f":"IF(D45<C18,\"Typ current limit is lower than desired current limit. Either increase the current limit threshold or lower the effective sense resistance value\",\"\")","v":""}]
[null,"MOSFET Selection"]
[null,"MOSFET Part Number","PSMN4R8-100BSE"]
[null,null,"Min","Typ","Max"]
[null,"MOSFET Rdson",3.7,4.0999999999999996,4.8,"mΩ"]
[null,"Desired power Dissipation per MOSFET",1,"W"]
[null,"Number of MOSFETs required",{"$f":"(E43*SQRT(E53*10^-3/C54))","v":3.2121669522186451}]
[null,"Number of MOSFETs populated ",3]
[null,"Power Dissipation Per MOSFET",{"$f":"C43*C43*C53/(1000*INT(C56)*INT(C56))","v":0.78377904127046349},{"$f":"D43*D43*D53/(1000*INT(C56)*INT(C56))","v":0.92249999999999999},{"$f":"E43*E43*E53/(1000*INT(C56)*INT(C56))","v":1.1464462809917353},"W"]
[null,"Voltage Drop Across MOSFETs during current limit",{"$f":"C43*C53/(1000*INT(C56))","v":5.3851485148514844E-2},{"$f":"D43*D53/(1000*INT(C56))","v":6.1499999999999992E-2},{"$f":"E43*E53/(1000*INT(C56))","v":7.4181818181818182E-2},"V"]
[null,{"$f":"IF(D57>C54,\"Too much power disssipation in the MOSFET. Either increase the number of MOSFETs or use a lower Rdson MOSFET\",\"\")","v":""}]
[null,{"$f":"IF(E57>C54,\"Max power disssipation in the MOSFET in higher than the Typical Desired Power dissipation per MOSFET. Either increase the number of MOSFETs or use a lower Rdson MOSFET\",\"\")","v":"Max power disssipation in the MOSFET in higher than the Typical Desired Power dissipation per MOSFET. Either increase the number of MOSFETs or use a lower Rdson MOSFET"}]
[null,{"$f":"_xlfn.CONCAT(\"FET BAD THRESHOLD must be set higher than \",ROUND(E58,3), \"V. This Threshold can be programmed using register CONFIG_2 [0x0E]\")","v":"FET BAD THRESHOLD must be set higher than 0.074V. This Threshold can be programmed using register CONFIG_2 [0x0E]"}]
[null,"FET BAD THRESHOLD","0.143","V"]
[null,"FET BAD THRESHOLD [0x0E][7:6] should be programmed to value",{"$f":"IF(C62='Register Map'!E64,'Register Map'!D64,(IF(C62='Register Map'!E65,'Register Map'!D65,(IF(C62='Register Map'!E66,'Register Map'!D66,(IF(C62='Register Map'!E67,'Register Map'!D67,0)))))))","v":"10"}]
[null,{"$f":"IF(ABS(C62)>ABS(D58),\"\",\"FET BAD THRESHOLD must be selected higher that the Maximum Voltage Drop Across MOSFETs during DC Operation\")","v":""}]
[]
[null,"FET BAD TIMER DELAY: If voltage across the MOSFET is greater than the FET BAD THRESHOLD voltage, for time euqal to or greater than FET BAD TIMER DELAY, the MOSFET is flagged as BAD MOSFET. It is important that FET BAD TIMER Delay should be set higher than time for all the valid secnarios such as charging the output cap during startup or input step where MOSFET operates in  linear region."]
[]
[null,"FET BAD TIMER Delay","0.256","sec"]
[null,"FET BAD TIMER Delay [0X0E][5:4] should be programmed to value",{"$f":"IF(C68='Register Map'!E69,'Register Map'!D69,(IF(C68='Register Map'!E70,'Register Map'!D70,(IF(C68='Register Map'!E71,'Register Map'!D71,(IF(C68='Register Map'!E72,'Register Map'!D72,0)))))))","v":"00"}]
[]
[]
[null,"Timer Cap Calculation"]
[]
[null,"Start up Mode : Please select if system should start up using dv/dt mode (using RAMP cap) or Current Limit Mode","dv/dt Mode"]
[null,{"$f":"IF(C74=\"dv/dt Mode\",\"Go to Row#110\",\"Go to Row#72\")","v":"Go to Row#110"}]
[]
[null,"Start up Mode : Start up Current is Controlled by Start up Foldback in Current Limit Mode",null,"dv/dt Control is disabled"]
[null,"CONTROL_1 [0x0A][6] should be programmed to 0"]
[null,"Foldback Ratio","10",null,null,null,"Use 10% whenever possible"]
[null,"CONFIG_1 [0x0D][3:2] should be programmed to value",{"$f":"IF(C79='Register Map'!$E$54,'Register Map'!$D$54,(IF(C79='Register Map'!$E$57,'Register Map'!$D$57,(IF(C79='Register Map'!$E$55,'Register Map'!$D$55,(IF(C79='Register Map'!$E$56,'Register Map'!$D$56,0)))))))","v":"11"}]
[null,null,"Min","Typ","Max"]
[null,"Total Inrush Current",{"$f":"C79*C45/100","v":4.3663366336633658},{"$f":"C79*D45/100","v":4.5},{"$f":"C79*E45/100","v":4.6363636363636367},"A"]
[null,"Inrush Current per Channel",{"$f":"C82/2","v":2.1831683168316829},{"$f":"D82/2","v":2.25},{"$f":"E82/2","v":2.3181818181818183},"A"]
[null,"Inrush Current per FET",{"$f":"C83/C56","v":0.72772277227722759},{"$f":"D83/C56","v":0.75},{"$f":"E83/C56","v":0.77272727272727282},"A"]
[null,"Maximum time to charge the Load Capacitor",{"$f":"General!C21*ABS(C9)/E82/1000","v":27.251960784313724},{"$f":"General!D21*ABS(C9)/D82/1000","v":29.555555555555554},{"$f":"General!E21*ABS(C9)/C82/1000","v":31.983333333333334},"ms"]
[null,{"$f":"IF((E85/1000)>C68,\"FET BAD Timer Delay is set to a smaller value than the time it takes to charge the output cap to max valid input voltage. Please select a higher value for FET BAD TIMER Delay.\",\"\")","v":""}]
[null,"TMR Current (when DRNS = 0)",{"$f":"IF($C$80=\"00\",ABS(SpecSheet!G19),(IF($C$80=\"01\",ABS(SpecSheet!G20),(IF($C$80=\"10\",ABS(SpecSheet!G21),(IF($C$80=\"11\",ABS(SpecSheet!G22),0)))))))","v":20},{"$f":"IF($C$80=\"00\",ABS(SpecSheet!H19),(IF($C$80=\"01\",ABS(SpecSheet!H20),(IF($C$80=\"10\",ABS(SpecSheet!H21),(IF($C$80=\"11\",ABS(SpecSheet!H22),0)))))))","v":22},{"$f":"IF($C$80=\"00\",ABS(SpecSheet!I19),(IF($C$80=\"01\",ABS(SpecSheet!I20),(IF($C$80=\"10\",ABS(SpecSheet!I21),(IF($C$80=\"11\",ABS(SpecSheet!I22),0)))))))","v":24},"uA"]
[null,"TMR Current average",{"$f":"(C87+2)/2","v":11},{"$f":"(D87+2)/2","v":12},{"$f":"(E87+2)/2","v":13},"uA","TMR current is not constant, but proportional to VDS. See datasheet, page 26"]
[null,"TMR Fault Threshold",{"$f":"SpecSheet!G25","v":2.028},{"$f":"SpecSheet!H25","v":2.048},{"$f":"SpecSheet!I25","v":2.0680000000000001},"V"]
[null,"TMR Cap should be greater than",null,{"$f":"(E88*E85/C89)+(E88*E85/C89)*D92/100","v":215.27243589743591},null,"nF"]
[null,"TMR Cap Populated",null,196,null,"nF"]
[null,"Timer Cap Tolerance",null,5,null,"%"]
[null,"Actual Timer Cap Value",{"$f":"(1-(D92/100))*D91","v":186.2},{"$f":"D91","v":196},{"$f":"(1+(D92/100))*D91","v":205.8},"nF"]
[null,"During startup, Timer will trip after",{"$f":"C93*C89/E88","v":29.047199999999997},{"$f":"D93*D89/D88","v":33.45066666666667},{"$f":"E93*E89/C88","v":38.690400000000004},"ms"]
[null,{"$f":"IF(C94>E85,\"\",\"TMR cap should only trip after the load cap has been fully charged. Please select a higher TMR cap value\")","v":"TMR cap should only trip after the load cap has been fully charged. Please select a higher TMR cap value"}]
[null,"During Input Step:","Min","Typ","Max"]
[null,"Current Limit",{"$f":"C45","v":43.663366336633658},{"$f":"D45","v":45},{"$f":"E45","v":46.36363636363636},"A"]
[null,"Load Current (for constant power load average load current)",null,{"$f":"((C6/C8)+(C6/C9))/2","v":37.321428571428569},null,"A","For constant power load, this current is not constant (use average current as approximation)"]
[null,"Current available to charge the output cap",{"$f":"C97-D98","v":6.3419377652050883},{"$f":"D97-D98","v":7.6785714285714306},{"$f":"E97-D98","v":9.0422077922077904},"A"]
[null,"Maximum time to charge the Load Capacitor",{"$f":"General!C21*C12/E99/1000","v":5.9885816876122098},{"$f":"General!D21*C12/D99/1000","v":7.423255813953487},{"$f":"General!E21*C12/C99/1000","v":9.4371787008642372},"ms"]
[null,"TMR Current",{"$f":"ABS(SpecSheet!G24)","v":192},{"$f":"ABS(SpecSheet!H24)","v":202},{"$f":"ABS(SpecSheet!I24)","v":212},"uA"]
[null,"TMR Fault Threshold",{"$f":"SpecSheet!G25","v":2.028},{"$f":"SpecSheet!H25","v":2.048},{"$f":"SpecSheet!I25","v":2.0680000000000001},"V"]
[null,"TMR Cap should be greater than",null,{"$f":"(E101*E100/C102)+((E101*E100/C102)*D92/100)","v":1035.856005331548},null,"nF"]
[null,"During input step, Timer will trip after",{"$f":"C93*C102/E101","v":1.7811962264150942},{"$f":"D93*D102/D101","v":1.9871683168316832},{"$f":"E93*E102/C101","v":2.2166375000000005},"ms"]
[null,{"$f":"IF(E100>C104,\"TMR cap should only trip after the load cap has been fully charged. Please select a higher TMR cap value\",\"\")","v":"TMR cap should only trip after the load cap has been fully charged. Please select a higher TMR cap value"}]
[null,"During Output Short: Short into 0 ohm resistor","Min","Typ","Max"]
[null,"Current Limit During Output Short ",{"$f":"$C$79/100*C45","v":4.3663366336633658},{"$f":"$C$79/100*D45","v":4.5},{"$f":"$C$79/100*E45","v":4.6363636363636358},"A"]
[null,"TMR Current",{"$f":"ABS(SpecSheet!G24)","v":192},{"$f":"ABS(SpecSheet!H24)","v":202},{"$f":"ABS(SpecSheet!I24)","v":212},{"$f":"(SpecSheet!J24)","v":"uA"}]
[null,"TMR Fault Threshold",{"$f":"SpecSheet!G25","v":2.028},{"$f":"SpecSheet!H25","v":2.048},{"$f":"SpecSheet!I25","v":2.0680000000000001},{"$f":"SpecSheet!J25","v":"V"}]
[null,"Timer will trip after",{"$f":"E93*C109/E108","v":1.9686905660377361},{"$f":"D91*D109/D108","v":1.9871683168316832},{"$f":"E93*E109/C108","v":2.2166375000000005},"ms"]
[]
[null,{"$f":"_xlfn.CONCAT(\"DURING STARTUP: Please check the SOA of the MOSFET to check if selected MOSFET can handle \",ABS(C9),\"V and \",D84,\"A for \",INT(D85),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING STARTUP: Please check the SOA of the MOSFET to check if selected MOSFET can handle 70V and 0.75A for 29ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,{"$f":"_xlfn.CONCAT(\"DURING INPUT STEP: Please check the SOA of the MOSFET to check if selected MOSFET can handle \",ABS(C12),\"V and \",D97,\"A for \",INT(D100),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING INPUT STEP: Please check the SOA of the MOSFET to check if selected MOSFET can handle 30V and 45A for 7ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,{"$f":"_xlfn.CONCAT(\"DURING OUTPUT SHORT:  Please check the SOA of the MOSFET to check if selected MOSFET can handle \",ABS(C9),\"V and \",ROUND(E107,3),\"A for \",INT(E110),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING OUTPUT SHORT:  Please check the SOA of the MOSFET to check if selected MOSFET can handle 70V and 4.636A for 2ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[]
[null,"Start up Mode: dV/dt Control is Enabled"]
[null,"CONTROL_1 [0x0A][6] should be programmed to 1"]
[null,null,"Min","Typ","Max"]
[null,"Desired Inrush Current",null,4,null,"A","Make this equal to or smaller than half of the startup current limit"]
[null,"Calculated Ramp Cap Value ",null,{"$f":"(ABS(SpecSheet!H26)*General!D126*General!D21/D119/1000)+((ABS(SpecSheet!H26)*General!D126*General!D21/D119/1000)*D122/100)","v":51.2218248997996},null,"nF"]
[null,"RAMP Cap Value Installed",null,32,null,"nF"]
[null,"Ramp Cap Tolerance",null,5,null,"%"]
[null,"Actual Ramp Cap Value",{"$f":"(1-(D122/100))*D121","v":30.4},{"$f":"D121","v":32},{"$f":"(1+(D122/100))*D121","v":33.6},"nF"]
[null,"Actual Inrush Current",{"$f":"ABS(SpecSheet!G26)*General!C126*General!C21/C123/1000","v":5.3820237783735791},{"$f":"ABS(SpecSheet!H26)*General!D126*General!D21/D123/1000","v":6.0978362975951903},{"$f":"ABS(SpecSheet!I26)*General!E126*General!E21/E123/1000","v":6.8398287895234917},"A"]
[null,"Foldback Ratio",null,"10",null,null,"Use 10% foldback to speed up timeout upon starting into resistive short"]
[null,"CONFIG_1 [0x0D][3:2] should be programmed to value",null,{"$f":"IF(D125='Register Map'!$E$54,'Register Map'!$D$54,(IF(D125='Register Map'!$E$57,'Register Map'!$D$57,(IF(D125='Register Map'!$E$55,'Register Map'!$D$55,(IF(D125='Register Map'!$E$56,'Register Map'!$D$56,0)))))))","v":"11"}]
[null,"Current Limit during Startup",{"$f":"C45*$D$125/100","v":4.3663366336633658},{"$f":"D45*$D$125/100","v":4.5},{"$f":"E45*$D$125/100","v":4.6363636363636367},"A"]
[null,{"$f":"IF(E124>C127,\"Inrush current will hit the current limit during start up and make the timer run. If you do not want to hit the current limit during start up, either increase the foldaback ratio or reduce the inrush current by increasing the Ramp cap\",\"\")","v":"Inrush current will hit the current limit during start up and make the timer run. If you do not want to hit the current limit during start up, either increase the foldaback ratio or reduce the inrush current by increasing the Ramp cap"}]
[null,"Time to Charge the Load Capacitor",{"$f":"General!C21*ABS(C9)/E124/1000","v":18.472684607768141},{"$f":"General!D21*ABS(C9)/D124/1000","v":21.81101517147178},{"$f":"General!E21*ABS(C9)/C124/1000","v":25.947488482148909},"ms"]
[]
[null,"During Input Step:","Min","Typ","Max"]
[null,"Current Limit",{"$f":"C45","v":43.663366336633658},{"$f":"D45","v":45},{"$f":"E45","v":46.36363636363636},"A"]
[null,"Load Current",null,{"$f":"((C6/C8)+(C6/C9))/2","v":37.321428571428569},null,"A","For constant power load, this is not a constant (use average current as approximation)"]
[null,"Current available to charge the output cap",{"$f":"-(D133-E132)","v":9.0422077922077904},{"$f":"D132-D133","v":7.6785714285714306},{"$f":"-(D133-C132)","v":6.3419377652050883},"A"]
[null,"Maximum time to charge the Load Capacitor",{"$f":"General!C21*$C$12/E134/1000","v":8.5383997769724047},{"$f":"General!D21*$C$12/D134/1000","v":7.423255813953487},{"$f":"General!E21*$C$12/C134/1000","v":6.6189587073608624},"ms"]
[null,"TMR Current",{"$f":"ABS(SpecSheet!G23)","v":192},{"$f":"ABS(SpecSheet!H23)","v":202},{"$f":"ABS(SpecSheet!I23)","v":212},"uA"]
[null,"TMR Fault Threshold",{"$f":"SpecSheet!G25","v":2.028},{"$f":"SpecSheet!H25","v":2.048},{"$f":"SpecSheet!I25","v":2.0680000000000001},"V"]
[null,"TMR Cap should be greater than",null,{"$f":"(E136*E135/C137)+((E136*E135/C137)*D140/100)","v":726.51884036416561},null,"nF"]
[null,"TMR Cap populated",null,170,null,"nF"]
[null,"Timer Cap Tolerance",null,5,null,"%"]
[null,"Actual Timer Cap Value",{"$f":"(1-(D140/100))*D139","v":161.5},{"$f":"D139","v":170},{"$f":"(1+(D140/100))*D139","v":178.5},"nF"]
[null,"During input step, Timer will trip after",{"$f":"C141*C137/E136","v":1.5449150943396226},{"$f":"D141*D137/D136","v":1.7235643564356438},{"$f":"E141*E137/C136","v":1.9225937500000001},"ms"]
[null,{"$f":"IF(C142>E135,\"\",\"TMR cap may trip before the system is able to ride through input step. This may shut down the system. Please select a higher TMR cap value\")","v":"TMR cap may trip before the system is able to ride through input step. This may shut down the system. Please select a higher TMR cap value"}]
[null,{"$f":"IF(AND((D124>D127),(D129>D142)),\"Device is starting up in Current Limit and Timer is going to expire before output cap is charged up which will not turn on the circuit properly. \",\"\")","v":"Device is starting up in Current Limit and Timer is going to expire before output cap is charged up which will not turn on the circuit properly. "}]
[null,"During Output Short: Short into 0 ohm resistor","Min","Typ","Max"]
[null,"Current Limit During Output Short ",{"$f":"$C$79/100*C45","v":4.3663366336633658},{"$f":"$C$79/100*D45","v":4.5},{"$f":"$C$79/100*E45","v":4.6363636363636358},"A"]
[null,"TMR Current",{"$f":"ABS(SpecSheet!G24)","v":192},{"$f":"ABS(SpecSheet!H24)","v":202},{"$f":"ABS(SpecSheet!I24)","v":212},{"$f":"(SpecSheet!J24)","v":"uA"}]
[null,"TMR Fault Threshold",{"$f":"SpecSheet!G25","v":2.028},{"$f":"SpecSheet!H25","v":2.048},{"$f":"SpecSheet!I25","v":2.0680000000000001},{"$f":"SpecSheet!J25","v":"V"}]
[null,"Timer will trip after",{"$f":"D139*C148/E147","v":1.6262264150943395},{"$f":"D139*D148/D147","v":1.7235643564356438},{"$f":"D139*E148/C147","v":1.8310416666666667},"ms"]
[]
[null,{"$f":"_xlfn.CONCAT(\"DURING STARTUP:Please check the SOA of the MOSFET to check if selected MOSFET can handle \",ABS(C9),\"V and \",ROUND(D124,3),\"A for \",INT(D129),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING STARTUP:Please check the SOA of the MOSFET to check if selected MOSFET can handle 70V and 6.098A for 21ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,{"$f":"_xlfn.CONCAT(\"DURING INPUT STEP: Please check the SOA of the MOSFET to check if selected MOSFET can handle \",ABS(C12),\"V and \",D132,\"A for \",INT(D135),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING INPUT STEP: Please check the SOA of the MOSFET to check if selected MOSFET can handle 30V and 45A for 7ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,{"$f":"_xlfn.CONCAT(\"DURING OUTPUT SHORT:  Please check the SOA of the MOSFET to check if selected MOSFET can handle \",ABS(C9),\"V and \",ROUND(E146,3),\"A for \",ROUND(E149,3),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING OUTPUT SHORT:  Please check the SOA of the MOSFET to check if selected MOSFET can handle 70V and 4.636A for 1.831ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,"Simulate the circuit in LTspice. Use SOAtherm simulation using LTspice to check SOA. "]
[]
[]
[]
[]
[null,"Bill Of Meterials"]
[null,"Component","Value","Units","Quantity","Other Specs"]
[null,"Rs1",{"$f":"C27","v":2},{"$f":"D27","v":"mΩ"},{"$f":"C32","v":6},{"$f":"_xlfn.CONCAT(Q32,\"%\",\", \",C22,D22)","v":"1%, 0.25W"}]
[null,"Rs2",{"$f":"C27","v":2},{"$f":"D27","v":"mΩ"},{"$f":"C32","v":6},{"$f":"_xlfn.CONCAT(Q32,\"%\",\", \",C22,D22)","v":"1%, 0.25W"}]
[null,"CTMR",{"$f":"IF(C74=\"dv/dt Mode\",D139,D91)","v":170},{"$f":"IF(C74=\"dv/dt Mode\",F139,F91)","v":"nF"},1,{"$f":"IF(C74=\"dv/dt Mode\",_xlfn.CONCAT(D140,F140,\", \",\"25V\"),_xlfn.CONCAT(D92,F92,\", \",\"25V\"))","v":"5%, 25V"}]
[null,"CRAMP",{"$f":"IF(C74=\"dv/dt Mode\",D121,\"Do not Install\")","v":32},{"$f":"IF(C74=\"dv/dt Mode\",F121,\"\")","v":"nF"},{"$f":"IF(C74=\"dv/dt Mode\",1,\"\")","v":1},{"$f":"IF(C74=\"dv/dt Mode\",_xlfn.CONCAT(D122,F122,\", \",\"25V\"),\"\")","v":"5%, 25V"}]
[null,"MOSFET (M1)",{"$f":"C51","v":"PSMN4R8-100BSE"},null,{"$f":"C56","v":3}]
[null,"MOSFET (M2)",{"$f":"C51","v":"PSMN4R8-100BSE"},null,{"$f":"C56","v":3}]

{"sheet":"LTC4284 Parallel","index":2,"n_rows":168,"n_cols":17,"rows_kept":168,"cut":false,"hidden":false,"merged":[[209,10,209,16],[0,1,0,3],[67,1,67,5],[52,2,52,4],[65,1,65,5],[61,1,61,5],[60,1,60,5]]}
[null,"Parallel Topology"]
[null,{"$f":"General!B1","v":"Please enter the data in white cells"}]
[null,{"$f":"General!B2","v":"LTC4284 Design Tool"}]
[]
[null,{"$f":"General!B4","v":"System Specifications"}]
[null,{"$f":"General!B5","v":"Power Requirement (W)"},{"$f":"General!C5","v":1900},{"$f":"General!D5","v":"W"}]
[null,{"$f":"General!B6","v":"Line Step"},{"$f":"General!C6","v":"No"}]
[null,{"$f":"General!B7","v":"Voltage Supply Min (V)"},{"$f":"General!E7","v":40},{"$f":"General!D7","v":"V"}]
[null,{"$f":"General!B8","v":"Voltage Supply Max (V)"},{"$f":"General!E8","v":70},{"$f":"General!D8","v":"V"}]
[null,{"$f":"General!B9","v":"Nominal Voltage"},{"$f":"General!E9","v":48},{"$f":"General!D9","v":"V"}]
[null,{"$f":"General!B18","v":"Selected Output Capacitor Value"},{"$f":"General!C18","v":1900},{"$f":"General!D18","v":"uF"}]
[null,{"$f":"General!B10","v":"Step Voltage"},{"$f":"General!C10","v":30},{"$f":"General!D10","v":"V"}]
[null,null,null,null,null,null,null,null,null,null,"Resistor Power Rating"]
[null,"Sense Resistor Selection",null,null,null,null,null,null,null,null,0.05]
[null,"Maximum Load Current",{"$f":"C6/ABS(C8)","v":47.5},"A",null,null,null,null,null,null,6.2E-2]
[null,"Current Limit of the System",40,"A",null,null,null,null,null,null,0.1]
[null,{"$f":"IF(C16>=C15,\"\",\"Current limit should be set above the maximum load current to accommodate the inrush current during load step\")","v":"Current limit should be set above the maximum load current to accommodate the inrush current during load step"},null,null,null,null,null,null,null,null,0.125]
[null,"Maximum Current per Channel",{"$f":"C16/2","v":20},"A",null,null,null,null,null,null,0.25]
[null,"Current Sense Voltage Threshold",1.4999999999999999E-2,"V",null,null,null,null,null,null,0.5]
[null,"Always ",null,null,null,null,null,null,null,null,1]
[null,"Maximum Power Dissipation in Sense Resistor Per Channel",{"$f":"C19*C18","v":0.3},"W"]
[null,"Power Rating  of the sense resistor",0.25,"W"]
[null,"Suggested Allowed Power Dissipation in Sense Resistor",{"$f":"C22/2","v":0.125},"W"]
[null,"Allowed Power Dissipation in Sense Resistor",0.125,"W"]
[null,"Effective Rsense required per Channel",{"$f":"C19/C18*1000","v":0.75},"mΩ"]
[null,"Suggested Rsense Value",{"$f":"C25*C29","v":2.25},"mΩ"]
[null,"Installed resistor value for Rsense",3,"mΩ"]
[null,"Rsense Tolerance","E96 (1%)"]
[null,"Number of Sense Resistors Required to achieve Rsense Power requirement",{"$f":"IF((C21/C24)>INT(C21/C24),INT(C21/C24)+1,INT(C21/C24))","v":3}]
[null,"Number of Rsense Required in Parallel to achieve Rsense resistance requirement",{"$f":"IF((C27/C25)>INT(C27/C25),INT(C27/C25)+1,INT(C27/C25))","v":4},null,null,null,null,null,null,null,"E96 (1%)",96,1,{"$f":"IF($C$28=K30,1,0)","v":1},null,"Active E","active %"]
[null,"Number of Sense Resistors Populated per channel",6,null,null,null,null,null,null,null,"E192 (0.5%)",192,0.5,{"$f":"IF($C$28=K31,1,0)","v":0},null,{"$f":"IF(N30=1,96,192)","v":96},{"$f":"IF(N30=1,M30,IF(N31=1,M31,IF(N32=1,M32,IF(N33=1,M33,1))))","v":1}]
[null,{"$f":"IF(INT(C29)<=INT(C31),\"\",\"Need to add more sense resistors in order to achieve required safe power dissipation number\")","v":""},null,null,null,null,null,null,null,null,"E192 (0.25%)",192,0.25,{"$f":"IF($C$28=K32,1,0)","v":0}]
[null,{"$f":"IF(INT(C30)>INT(C31),\"Need to add more sense resistors in order to achieve required effective Rsense Value\",\"\")","v":""},null,null,null,null,null,null,null,null,"E192 (0.1%)",192,0.1,{"$f":"IF($C$28=K33,1,0)","v":0}]
[]
[]
[null,null,"Min","Typ","Max"]
[null,"Actual Effective Rsense per Channel",{"$f":"(C27-(C27*Q31/100))/C31","v":0.49500000000000005},{"$f":"C27/C31","v":0.5},{"$f":"(C27+(C27*Q31/100))/C31","v":0.505},"mΩ"]
[]
[null,"Actual Current Sense Voltage Threshold",{"$f":"0.98*D39","v":1.7639999999999999E-2},1.7999999999999999E-2,{"$f":"1.02*D39","v":1.8359999999999998E-2},"V"]
[null,"User might need to chose a different Current Sense Threshold Voltage based upon Actual Effective Rsense"]
[null,{"$f":"_xlfn.CONCAT(\"Current Sense Voltage Threshold [0x0D][7:4] should be programmed to value \")","v":"Current Sense Voltage Threshold [0x0D][7:4] should be programmed to value "},{"$f":"(IF(D39='Register Map'!E36,'Register Map'!D36,(IF(D39='Register Map'!E37,'Register Map'!D37,(IF(D39='Register Map'!E38,'Register Map'!D38,(IF(D39='Register Map'!E39,'Register Map'!D39,(IF(D39='Register Map'!E40,'Register Map'!D40,(IF(D39='Register Map'!E41,'Register Map'!D41,(IF(D39='Register Map'!E42,'Register Map'!D42,(IF(D39='Register Map'!E43,'Register Map'!D43,(IF(D39='Register Map'!E44,'Register Map'!D44,(IF(D39='Register Map'!E45,'Register Map'!D45,(IF(D39='Register Map'!E46,'Register Map'!D46,(IF(D39='Register Map'!E47,'Register Map'!D47,(IF(D39='Register Map'!E48,'Register Map'!D48,(IF(D39='Register Map'!E49,'Register Map'!D49,(IF(D39='Register Map'!E50,'Register Map'!D50,(IF(D39='Register Map'!E51,'Register Map'!D51,0))))))))))))))))))))))))))))))))","v":"0011"}]
[]
[]
[null,"Actual Maximum Current per Channel",{"$f":"$C$39/E37*1000","v":34.930693069306926},{"$f":"$D$39/D37*1000","v":36},{"$f":"$E$39/C37*1000","v":37.090909090909086},"A"]
[null,"Actual Power Dissipation per Sense Resistor",{"$f":"$E$39*C44/INT($C$31)","v":0.10688792079207919},{"$f":"$E$39*D44/INT($C$31)","v":0.11015999999999998},{"$f":"$E$39*E44/INT($C$31)","v":0.11349818181818179},"W"]
[null,"Actual Current Limit for the System",{"$f":"C44*2","v":69.861386138613852},{"$f":"D44*2","v":72},{"$f":"E44*2","v":74.181818181818173},"A"]
[null,{"$f":"IF('LTC4284 Parallel'!E45>('LTC4284 Parallel'!C24),\"Max power dissipation in sense resistors is higher than the desired value.\",\"\")","v":""}]
[null,{"$f":"IF('LTC4284 Parallel'!D45>('LTC4284 Parallel'!C24),\"Typ power dissipation in sense resistors is higher than the desired value. Either increase the number of sense resistors in the channel or decrease the actual current sense voltage threshold\",\"\")","v":""}]
[null,{"$f":"IF(C44<C18,\"Min current limit per channel is lower than desired curretn per channel. Either increase the Current Sense Voltage Threshold or lower the Effective Rsense per channel\",\"\")","v":""}]
[null,{"$f":"IF(D44<C18,\"Typ current limit per channel is lower than desired curretn per channel. Either increase the Current Sense Voltage Threshold or lower the Effective Rsense per channel\",\"\")","v":""}]
[]
[null,"MOSFET Selection"]
[null,"MOSFET Part Number","PSMN4R8-100BSE"]
[null,null,"Min","Typ","Max"]
[null,"MOSFET Rdson",3.7,4.0999999999999996,4.8,"mΩ"]
[null,"Desired power Dissipation per MOSFET",1,"W"]
[null,"Number of MOSFETs required per Channel",{"$f":"(E44*SQRT(E55*10^-3/C56))","v":2.5697335617749157}]
[null,"Number of MOSFETs populated per Channel",2]
[null,"Power Dissipation Per MOSFET",{"$f":"C44*C44*C55/(1000*INT(C58)*INT(C58))","v":1.1286418194294674},{"$f":"D44*D44*D55/(1000*INT(C58)*INT(C58))","v":1.3283999999999998},{"$f":"E44*E44*E55/(1000*INT(C58)*INT(C58))","v":1.6508826446280989},"W"]
[null,"Voltage Drop Across MOSFETs during current limit",{"$f":"C44*C55/(1000*INT(C58))","v":6.4621782178217818E-2},{"$f":"D44*D55/(1000*INT(C58))","v":7.3799999999999991E-2},{"$f":"E44*E55/(1000*INT(C58))","v":8.9018181818181802E-2},"V"]
[null,{"$f":"IF(D59>C56,\"Too much power dissipation per MOSFET. Either increase the number of MOSFETs or use a MOSFET with lower Rdson\",\"\")","v":"Too much power dissipation per MOSFET. Either increase the number of MOSFETs or use a MOSFET with lower Rdson"}]
[null,{"$f":"IF(AND((E59>C56),(C56>D59)),\"Typical power dissipation per MOSFET is lower than the desired power dissipation value but Max power dissipation per MOSFET can be higher than the desired value. User can increase the number of MOSFETs or use a MOSFET with lower Rdson\",\"\")","v":""}]
[null,{"$f":"_xlfn.CONCAT(\"FET BAD THRESHOLD must be set higher than \",ROUND(E60,3), \"V. This Threshold can be programmed using register CONFIG_2 [0x0E]\")","v":"FET BAD THRESHOLD must be set higher than 0.089V. This Threshold can be programmed using register CONFIG_2 [0x0E]"}]
[null,"FET BAD THRESHOLD","0.143","V"]
[null,"FET BAD THRESHOLD [0x0E][7:6] should be programmed to value",{"$f":"IF(C64='Register Map'!E64,'Register Map'!D64,(IF(C64='Register Map'!E65,'Register Map'!D65,(IF(C64='Register Map'!E66,'Register Map'!D66,(IF(C64='Register Map'!E67,'Register Map'!D67,0)))))))","v":"10"}]
[null,{"$f":"IF(ABS(C64)>ABS(D60),\"\",\"FET BAD THRESHOLD must be selected higher that the Maximum Voltage Drop Across MOSFETs during DC Operation\")","v":""}]
[]
[null,"FET BAD TIMER DELAY: If the voltage across the MOSFET is greater than FET BAD THRESHOLD voltage, for a time equal to FET BAD TIMER DELAY, the MOSFET is flagged as BAD MOSFET. It is important that FET BAD TIMER Delay should be set higher than the time required for all the valid secnario such as charging the output cap during startup or input step where MOSFET operates in  linear region."]
[]
[null,"FET BAD TIMER Delay","0.512","sec"]
[null,"FET BAD TIMER Delay [0X0E][5:4] should be programmed to value",{"$f":"IF(C70='Register Map'!E69,'Register Map'!D69,(IF(C70='Register Map'!E70,'Register Map'!D70,(IF(C70='Register Map'!E71,'Register Map'!D71,(IF(C70='Register Map'!E72,'Register Map'!D72,0)))))))","v":"01"}]
[]
[]
[null,"Timer Cap Calculation"]
[]
[null,"Start up Mode : Please select if system should start up using dv/dt mode (using RAMP cap) or Current Limit Mode","Current Limit Mode"]
[null,{"$f":"IF(C76=\"dv/dt Mode\",\"Go to Row#110\",\"Go to Row#72\")","v":"Go to Row#72"}]
[]
[null,"Start up Mode : Start up Current is Controlled by Start up Foldback in Current Limit Mode",null,"dv/dt Control is disabled"]
[null,"CONTROL_1 [0x0A][6] should be programmed to 0"]
[null,"Foldback Ratio","20",null,null,null,"Use 10% whenever possible"]
[null,"CONFIG_1 [0x0D][3:2] should be programmed to value",{"$f":"IF(C81='Register Map'!$E$54,'Register Map'!$D$54,(IF(C81='Register Map'!$E$57,'Register Map'!$D$57,(IF(C81='Register Map'!$E$55,'Register Map'!$D$55,(IF(C81='Register Map'!$E$56,'Register Map'!$D$56,0)))))))","v":"10"}]
[null,null,"Min","Typ","Max"]
[null,"Total Inrush Current",{"$f":"C81*C46/100","v":13.97227722772277},{"$f":"C81*D46/100","v":14.4},{"$f":"C81*E46/100","v":14.836363636363636},"A"]
[null,"Inrush Current per Channel",{"$f":"C84/2","v":6.9861386138613852},{"$f":"D84/2","v":7.2},{"$f":"E84/2","v":7.418181818181818},"A"]
[null,"Inrush Current per FET",{"$f":"C85/C58","v":3.4930693069306926},{"$f":"D85/C58","v":3.6},{"$f":"E85/C58","v":3.709090909090909},"A"]
[null,"Maximum time to charge the Load Capacitor",{"$f":"General!C21*ABS(C9)/E84/1000","v":8.5162377450980404},{"$f":"General!D21*ABS(C9)/D84/1000","v":9.2361111111111107},{"$f":"ROUND(General!E21*ABS(C9)/C84/1000,2)","v":9.99},"ms"]
[null,{"$f":"IF((E87/1000)>C70,\"FET BAD Timer Delay is set to a smaller value than the time it takes to charge the output cap to max valid input voltage. Please select a higher value for FET BAD TIMER Delay.\",\"\")","v":""}]
[null,"TMR Current (when DRNS = 0)",{"$f":"IF($C$82=\"00\",ABS(SpecSheet!G19),(IF($C$82=\"01\",ABS(SpecSheet!G20),(IF($C$82=\"10\",ABS(SpecSheet!G21),(IF($C$82=\"11\",ABS(SpecSheet!G22),0)))))))","v":39},{"$f":"IF($C$82=\"00\",ABS(SpecSheet!H19),(IF($C$82=\"01\",ABS(SpecSheet!H20),(IF($C$82=\"10\",ABS(SpecSheet!H21),(IF($C$82=\"11\",ABS(SpecSheet!H22),0)))))))","v":42},{"$f":"IF($C$82=\"00\",ABS(SpecSheet!I19),(IF($C$82=\"01\",ABS(SpecSheet!I20),(IF($C$82=\"10\",ABS(SpecSheet!I21),(IF($C$82=\"11\",ABS(SpecSheet!I22),0)))))))","v":45},"uA"]
[null,"TMR Current average",{"$f":"(C89+2)/2","v":20.5},{"$f":"(D89+2)/2","v":22},{"$f":"(E89+2)/2","v":23.5},"uA","TMR current is not constant, but proportional to VDS. See datasheet, page 26"]
[null,"TMR Fault Threshold",{"$f":"SpecSheet!G25","v":2.028},{"$f":"SpecSheet!H25","v":2.048},{"$f":"SpecSheet!I25","v":2.0680000000000001},"V"]
[null,"TMR Cap should be greater than",null,{"$f":"((E90*E87/C91)*(((D94+1)/100)+1))","v":122.70754437869823},null,"nF"]
[null,"TMR Cap Populated",null,217,null,"nF"]
[null,"Timer Cap Tolerance",null,5,null,"%"]
[null,"Actual Timer Cap Value",{"$f":"(1-(D94/100))*D93","v":206.14999999999998},{"$f":"D93","v":217},{"$f":"(1+(D94/100))*D93","v":227.85000000000002},"nF"]
[null,"During startup, Timer will trip after",{"$f":"ROUND(C95*C91/E90,2)","v":17.79},{"$f":"D95*D91/D90","v":20.200727272727274},{"$f":"E95*E91/C90","v":22.985063414634151},"ms"]
[null,{"$f":"IF((ROUND(C96,1)>ROUND(E87,1)),\"\",\"TMR cap should only trip after the load cap has been fully charged. Please select a higher TMR cap value\")","v":""}]
[null,"During Input Step:","Min","Typ","Max"]
[null,"Current Limit",{"$f":"C46","v":69.861386138613852},{"$f":"D46","v":72},{"$f":"E46","v":74.181818181818173},"A"]
[null,"Load Current (for constant power load average load current)",null,{"$f":"((C6/C8)+(C6/C9))/2","v":37.321428571428569},null,"A","For constant power load, this current is not constant (use average current as approximation)"]
[null,"Current available to charge the output cap",{"$f":"C99-D100","v":32.539957567185283},{"$f":"D99-D100","v":34.678571428571431},{"$f":"E99-D100","v":36.860389610389603},"A"]
[null,"Maximum time to charge the Load Capacitor",{"$f":"General!C21*C12/E101/1000","v":1.4690566370122438},{"$f":"General!D21*C12/D101/1000","v":1.6436663233779607},{"$f":"General!E21*C12/C101/1000","v":1.8392771372374301},"ms"]
[null,"TMR Current",{"$f":"ABS(SpecSheet!G24)","v":192},{"$f":"ABS(SpecSheet!H24)","v":202},{"$f":"ABS(SpecSheet!I24)","v":212},"uA"]
[null,"TMR Fault Threshold",{"$f":"SpecSheet!G25","v":2.028},{"$f":"SpecSheet!H25","v":2.048},{"$f":"SpecSheet!I25","v":2.0680000000000001},"V"]
[null,"TMR Cap should be greater than",null,{"$f":"(E103*E102/C104)+(E103*E102/C104*(D94+1)/100)","v":203.80786897435667},null,"nF"]
[null,"During input step, Timer will trip after",{"$f":"C95*E104/C103","v":2.2204072916666666},{"$f":"D95*D104/D103","v":2.2000792079207923},{"$f":"E95*E104/C103","v":2.4541343750000002},"ms"]
[null,{"$f":"IF(E102>C106,\"TMR cap should only trip after the load cap has been fully charged. Please select a higher TMR cap value\",\"\")","v":""}]
[null,"During Output Short: Short into 0 ohm resistor","Min","Typ","Max"]
[null,"Current Limit During Output Short ",{"$f":"$C$81/100*C46","v":13.97227722772277},{"$f":"$C$81/100*D46","v":14.4},{"$f":"$C$81/100*E46","v":14.836363636363636},"A"]
[null,"TMR Current",{"$f":"ABS(SpecSheet!G24)","v":192},{"$f":"ABS(SpecSheet!H24)","v":202},{"$f":"ABS(SpecSheet!I24)","v":212},{"$f":"(SpecSheet!J24)","v":"uA"}]
[null,"TMR Fault Threshold",{"$f":"SpecSheet!G25","v":2.028},{"$f":"SpecSheet!H25","v":2.048},{"$f":"SpecSheet!I25","v":2.0680000000000001},{"$f":"SpecSheet!J25","v":"V"}]
[null,"Timer will trip after",{"$f":"E95*C111/E110","v":2.1796216981132077},{"$f":"D93*D111/D110","v":2.2000792079207923},{"$f":"E95*E111/C110","v":2.4541343750000002},"ms"]
[]
[null,{"$f":"_xlfn.CONCAT(\"DURING STARTUP: Please check the SOA of the MOSFET to check if selected MOSFET can handle \",ABS(C9),\"V and \",D86,\"A for \",INT(D87),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING STARTUP: Please check the SOA of the MOSFET to check if selected MOSFET can handle 70V and 3.6A for 9ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,{"$f":"_xlfn.CONCAT(\"DURING INPUT STEP: Please check the SOA of the MOSFET to check if selected MOSFET can handle \",ABS(C12),\"V and \",D99,\"A for \",INT(D102),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING INPUT STEP: Please check the SOA of the MOSFET to check if selected MOSFET can handle 30V and 72A for 1ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,{"$f":"_xlfn.CONCAT(\"DURING OUTPUT SHORT:  Please check the SOA of the MOSFET to check if selected MOSFET can handle \",ABS(C9),\"V and \",ROUND(E109,3),\"A for \",INT(E112),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING OUTPUT SHORT:  Please check the SOA of the MOSFET to check if selected MOSFET can handle 70V and 14.836A for 2ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[]
[null,"Start up Mode: dV/dt Control is Enabled"]
[null,"CONTROL_1 [0x0A][6] should be programmed to 1",null,null,null,null,"Make this equal to or smaller than half of the startup current limit"]
[null,null,"Min","Typ","Max"]
[null,"Desired Inrush Current",null,4,null,"A"]
[null,"Calculated Ramp Cap Value",null,{"$f":"(ABS(SpecSheet!H26)*General!D126*General!D21/'LTC4284 Parallel'!D121/1000)+(D124*ABS(SpecSheet!H26)*General!D126*General!D21/'LTC4284 Parallel'!D121/1000)/100","v":51.2218248997996},null,"nF"]
[null,"RAMP Cap Value Installed",null,22,null,"nF"]
[null,"Ramp Cap Tolerance",null,5,null,"%"]
[null,"Actual Ramp Cap Value",{"$f":"(1-(D124/100))*D123","v":20.9},{"$f":"D123","v":22},{"$f":"(1+(D124/100))*D123","v":23.1},"nF","Use 10% foldback to speed up timeout upon starting into resistive short"]
[null,"Actual Inrush Current",{"$f":"ABS(SpecSheet!G26)*General!C126*General!C21/'LTC4284 Parallel'!E125/1000","v":7.0828364875565715},{"$f":"ABS(SpecSheet!H26)*General!D126*General!D21/'LTC4284 Parallel'!D125/1000","v":8.869580069229368},{"$f":"ABS(SpecSheet!I26)*General!E126*General!E21/'LTC4284 Parallel'!C125/1000","v":10.996088388899013},"A"]
[null,"Foldback Ratio",null,"10"]
[null,"CONFIG_1 [0x0D][3:2] should be programmed to value",null,{"$f":"IF(D127='Register Map'!$E$54,'Register Map'!$D$54,(IF(D127='Register Map'!$E$57,'Register Map'!$D$57,(IF(D127='Register Map'!$E$55,'Register Map'!$D$55,(IF(D127='Register Map'!$E$56,'Register Map'!$D$56,0)))))))","v":"11"}]
[null,"Current Limit during Startup",{"$f":"C46*$D$127/100","v":6.9861386138613852},{"$f":"D46*$D$127/100","v":7.2},{"$f":"E46*$D$127/100","v":7.418181818181818},"A"]
[null,{"$f":"IF(E126>C129,\"Inrush current will hit the current limit during start up and make the timer run. If you do not want to hit the current limit during start up, either increase the foldaback ratio or reduce the inrush current by increasing the Ramp cap\",\"\")","v":"Inrush current will hit the current limit during start up and make the timer run. If you do not want to hit the current limit during start up, either increase the foldaback ratio or reduce the inrush current by increasing the Ramp cap"}]
[null,"Time to Charge the Load Capacitor",{"$f":"General!C21*ABS(C9)/E126/1000","v":11.490449651855775},{"$f":"General!D21*ABS(C9)/D126/1000","v":14.995072930386849},{"$f":"General!E21*ABS(C9)/C126/1000","v":19.716677103211836},"ms"]
[null,null,null,null,null,null,"For constant power load, this is not a constant (use average current as approximation)"]
[null,"During Input Step:","Min","Typ","Max"]
[null,"Current Limit",{"$f":"C46","v":69.861386138613852},{"$f":"D46","v":72},{"$f":"E46","v":74.181818181818173},"A"]
[null,"Load Current",null,{"$f":"((C6/C8)+(C6/C9))/2","v":37.321428571428569},null,"A"]
[null,"Current available to charge the output cap",{"$f":"C134-D135","v":32.539957567185283},{"$f":"D134-D135","v":34.678571428571431},{"$f":"E134-D135","v":36.860389610389603},"A"]
[null,"Maximum time to charge the Load Capacitor",{"$f":"General!C21*$C$12/E136/1000","v":1.4690566370122438},{"$f":"General!D21*$C$12/D136/1000","v":1.6436663233779607},{"$f":"General!E21*$C$12/C136/1000","v":1.8392771372374301},"ms"]
[null,"TMR Current",{"$f":"ABS(SpecSheet!G23)","v":192},{"$f":"ABS(SpecSheet!H23)","v":202},{"$f":"ABS(SpecSheet!I23)","v":212},"uA"]
[null,"TMR Fault Threshold",{"$f":"SpecSheet!G25","v":2.028},{"$f":"SpecSheet!H25","v":2.048},{"$f":"SpecSheet!I25","v":2.0680000000000001},"V"]
[null,"TMR Cap should be greater than",null,{"$f":"(E138*E137/C139)+(D142+1)*(E138*E137/C139)/100","v":203.80786897435667},null,"nF"]
[null,"TMR Cap populated",null,220,null,"nF"]
[null,"Timer Cap Tolerance",null,5,null,"%"]
[null,"Actual Timer Cap Value",{"$f":"(1-(D142/100))*D141","v":209},{"$f":"D141","v":220},{"$f":"(1+(D142/100))*D141","v":231},"nF"]
[null,"During input step, Timer will trip after",{"$f":"C143*C139/E138","v":1.999301886792453},{"$f":"D143*D139/D138","v":2.2304950495049507},{"$f":"E143*E139/C138","v":2.4880625000000003},"ms"]
[null,{"$f":"IF(E137<C144,\"\",\"TMR cap will trip before the system is able to ride through input step. This will shut down the system. Please select a higher TMR cap value\")","v":""}]
[null,{"$f":"IF(AND((E126>C129),(E131>C144)),\"Device is starting up in Current Limit and Timer is going to expire before output cap is charged up which will not turn on the circuit properly. \",\"\")","v":"Device is starting up in Current Limit and Timer is going to expire before output cap is charged up which will not turn on the circuit properly. "}]
[null,"During Output Short: Short into 0 ohm resistor","Min","Typ","Max"]
[null,"Current Limit During Output Short ",{"$f":"$C$81/100*C46","v":13.97227722772277},{"$f":"$C$81/100*D46","v":14.4},{"$f":"$C$81/100*E46","v":14.836363636363636},"A"]
[null,"TMR Current",{"$f":"ABS(SpecSheet!G24)","v":192},{"$f":"ABS(SpecSheet!H24)","v":202},{"$f":"ABS(SpecSheet!I24)","v":212},{"$f":"(SpecSheet!J24)","v":"uA"}]
[null,"TMR Fault Threshold",{"$f":"SpecSheet!G25","v":2.028},{"$f":"SpecSheet!H25","v":2.048},{"$f":"SpecSheet!I25","v":2.0680000000000001},{"$f":"SpecSheet!J25","v":"V"}]
[null,"Timer will trip after",{"$f":"D141*C150/E149","v":2.1045283018867926},{"$f":"D141*D150/D149","v":2.2304950495049507},{"$f":"D141*E150/C149","v":2.3695833333333334},"ms"]
[]
[null,{"$f":"_xlfn.CONCAT(\"DURING STARTUP:Please check the SOA of the MOSFET to check if selected MOSFET can handle \",ABS(C9),\"V and \",ROUND(D126,3),\"A for \",INT(D131),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING STARTUP:Please check the SOA of the MOSFET to check if selected MOSFET can handle 70V and 8.87A for 14ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,{"$f":"_xlfn.CONCAT(\"DURING INPUT STEP: Please check the SOA of the MOSFET to check if selected MOSFET can handle \",ABS(C12),\"V and \",D134,\"A for \",INT(D137),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING INPUT STEP: Please check the SOA of the MOSFET to check if selected MOSFET can handle 30V and 72A for 1ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,{"$f":"_xlfn.CONCAT(\"DURING OUTPUT SHORT:  Please check the SOA of the MOSFET to check if selected MOSFET can handle \",ABS(C9),\"V and \",ROUND(E148,3),\"A for \",ROUND(E151,3),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING OUTPUT SHORT:  Please check the SOA of the MOSFET to check if selected MOSFET can handle 70V and 14.836A for 2.37ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,"Simulate the circuit in LTspice. Use SOAtherm simulation using LTspice to check SOA. "]
[]
[]
[]
[]
[null,"Bill Of Meterials"]
[null,"Component","Value","Units","Quantity","Other Specs"]
[null,"Rs1",{"$f":"C27","v":3},{"$f":"D27","v":"mΩ"},{"$f":"C31","v":6},{"$f":"_xlfn.CONCAT(Q31,\"%\",\", \",C22,D22)","v":"1%, 0.25W"}]
[null,"Rs2",{"$f":"C27","v":3},{"$f":"D27","v":"mΩ"},{"$f":"C31","v":6},{"$f":"_xlfn.CONCAT(Q31,\"%\",\", \",C22,D22)","v":"1%, 0.25W"}]
[null,"CTMR",{"$f":"IF(C76=\"dv/dt Mode\",D141,D93)","v":217},{"$f":"IF(C76=\"dv/dt Mode\",F141,F93)","v":"nF"},1,{"$f":"IF(C76=\"dv/dt Mode\",_xlfn.CONCAT(D142,F142,\", \",\"25V\"),_xlfn.CONCAT(D94,F94,\", \",\"25V\"))","v":"5%, 25V"}]
[null,"CRAMP",{"$f":"IF(C76=\"dv/dt Mode\",D123,\"Do not Install\")","v":"Do not Install"},{"$f":"IF(C76=\"dv/dt Mode\",F123,\"\")","v":""},{"$f":"IF(C76=\"dv/dt Mode\",1,\"\")","v":""},{"$f":"IF(C76=\"dv/dt Mode\",_xlfn.CONCAT(D124,F124,\", \",\"25V\"),\"\")","v":""}]
[null,"MOSFET (M1)",{"$f":"C53","v":"PSMN4R8-100BSE"},null,{"$f":"C58","v":2}]
[null,"MOSFET (M2)",{"$f":"C53","v":"PSMN4R8-100BSE"},null,{"$f":"C58","v":2}]

{"sheet":"LTC4284High Stress Staged Start","index":3,"n_rows":174,"n_cols":17,"rows_kept":174,"cut":false,"hidden":false,"merged":[[0,1,0,3],[172,2,172,3],[173,2,173,3],[45,1,45,5],[52,2,52,4],[61,2,61,4],[44,1,44,5]]}
[null,"High Stress Staged Start Topology"]
[null,{"$f":"General!B1","v":"Please enter the data in white cells"}]
[null,{"$f":"General!B2","v":"LTC4284 Design Tool"}]
[]
[null,{"$f":"General!B4","v":"System Specifications"}]
[null,{"$f":"General!B5","v":"Power Requirement (W)"},{"$f":"General!C5","v":1900},{"$f":"General!D5","v":"W"}]
[null,{"$f":"General!B6","v":"Line Step"},{"$f":"General!C6","v":"No"}]
[null,{"$f":"General!B7","v":"Voltage Supply Min (V)"},{"$f":"General!E7","v":40},{"$f":"General!D7","v":"V"}]
[null,{"$f":"General!B8","v":"Voltage Supply Max (V)"},{"$f":"General!E8","v":70},{"$f":"General!D8","v":"V"}]
[null,{"$f":"General!B9","v":"Nominal Voltage"},{"$f":"General!E9","v":48},{"$f":"General!D9","v":"V"}]
[null,{"$f":"General!B18","v":"Selected Output Capacitor Value"},{"$f":"General!C18","v":1900},{"$f":"General!D18","v":"uF"}]
[null,{"$f":"General!B10","v":"Step Voltage"},{"$f":"General!C10","v":30},{"$f":"General!D10","v":"V"}]
[null,null,null,null,null,null,null,null,null,null,"Resistor Power Rating"]
[null,"Sense Resistor Selection",null,null,null,null,null,null,null,null,0.05]
[null,"Maximum Load Current",{"$f":"C6/ABS(C8)","v":47.5},"A",null,null,null,null,null,null,6.2E-2]
[null,"Current Limit",70,"A",null,null,null,null,null,null,0.1]
[null,{"$f":"IF(C16>=C15,\"\",\"Current limit should be set above the maximum load current\")","v":""},null,null,null,null,null,null,null,null,0.125]
[null,"Maximum Current ",{"$f":"C16","v":70},"A",null,null,null,null,null,null,0.25]
[null,"Current Sense Voltage Threshold",1.6E-2,"V",null,null,null,null,null,null,0.5]
[null,null,null,null,null,null,null,null,null,null,1]
[null,"Maximum Power Dissipation in Sense Resistor bank",{"$f":"C19*C18","v":1.1200000000000001},"W"]
[null,"Power Rating  of the sense resistor",0.25,"W"]
[null,"Suggested Allowed Power Dissipation in Sense Resistor",{"$f":"C22/2","v":0.125},"W"]
[null,"Allowed Power Dissipation in Sense Resistor",0.125,"W"]
[null,"Effective Rsense required",{"$f":"C19/C18*1000","v":0.22857142857142856},"mΩ"]
[null,"Suggest Rsense Value",{"$f":"C25*C31","v":2.0571428571428569},"mΩ"]
[]
[null,"Selected resistor value for Rsense",2,"mΩ"]
[null,"Rsense Tolerance","E96 (1%)"]
[null,"Number of Rsense Required in Parallel to achieve Rsense resistance requirement",{"$f":"IF((C28/C25)>INT(C28/C25),INT(C28/C25)+1,(C28/C25))","v":9},null,null,null,null,null,null,null,"E96 (1%)",96,1,{"$f":"IF($C$29=K30,1,0)","v":1},null,"Active E","active %"]
[null,"Number of Sense Resistors Required to achieve Rsense Power requirement",{"$f":"IF((C21/C24)>INT(C21/C24),INT(C21/C24)+1,(C21/C24))","v":9},null,null,null,null,null,null,null,"E192 (0.5%)",192,0.5,{"$f":"IF($C$29=K31,1,0)","v":0},null,{"$f":"IF(N30=1,96,192)","v":96},{"$f":"IF(N30=1,M30,IF(N31=1,M31,IF(N32=1,M32,IF(N33=1,M33,1))))","v":1}]
[null,"Number of Sense Resistors Populated per channel",9,null,null,null,null,null,null,null,"E192 (0.25%)",192,0.25,0]
[null,{"$f":"IF(INT(C32)>=(C31),\"\",\"Need to add more sense resistors in order to achieve required safe power dissipation \")","v":""},null,null,null,null,null,null,null,null,"E192 (0.1%)",192,0.1,{"$f":"IF($C$29=K33,1,0)","v":0}]
[null,{"$f":"IF(INT(C32)>=(C30),\"\",\"Need to add more sense resistors in order to achieve required Rsense Value \")","v":""}]
[]
[null,null,"Min","Typ","Max"]
[null,"Actual Effective Rsense",{"$f":"(C28-(C28*Q31/100))/C32","v":0.22},{"$f":"C28/C32","v":0.22222222222222221},{"$f":"(C28+(C28*Q31/100))/C32","v":0.22444444444444445},"mΩ"]
[]
[null,"Actual Current Sense Voltage Threshold",{"$f":"0.98*D39","v":1.5679999999999999E-2},1.6E-2,{"$f":"1.02*D39","v":1.6320000000000001E-2},"V"]
[null,"User might have to change the Current Sense Voltage Threshold based on Actual Effective Rsense value"]
[null,{"$f":"_xlfn.CONCAT(\"Current Sense Voltage Threshold [0x0D][7:4] should be programmed to value \")","v":"Current Sense Voltage Threshold [0x0D][7:4] should be programmed to value "},{"$f":"(IF(D39='Register Map'!E36,'Register Map'!D36,(IF(D39='Register Map'!E37,'Register Map'!D37,(IF(D39='Register Map'!E38,'Register Map'!D38,(IF(D39='Register Map'!E39,'Register Map'!D39,(IF(D39='Register Map'!E40,'Register Map'!D40,(IF(D39='Register Map'!E41,'Register Map'!D41,(IF(D39='Register Map'!E42,'Register Map'!D42,(IF(D39='Register Map'!E43,'Register Map'!D43,(IF(D39='Register Map'!E44,'Register Map'!D44,(IF(D39='Register Map'!E45,'Register Map'!D45,(IF(D39='Register Map'!E46,'Register Map'!D46,(IF(D39='Register Map'!E47,'Register Map'!D47,(IF(D39='Register Map'!E48,'Register Map'!D48,(IF(D39='Register Map'!E49,'Register Map'!D49,(IF(D39='Register Map'!E50,'Register Map'!D50,(IF(D39='Register Map'!E51,'Register Map'!D51,0))))))))))))))))))))))))))))))))","v":"0001"}]
[]
[null,"Actual Maximum Current (Current Limit)",{"$f":"$C$39/E37*1000","v":69.861386138613852},{"$f":"$D$39/D37*1000","v":72.000000000000014},{"$f":"$E$39/C37*1000","v":74.181818181818187},"A"]
[null,"Actual Power Dissipation per Sense Resistor",{"$f":"C39*C43/$C$32","v":0.12171405940594056},{"$f":"D39*D43/$C$32","v":0.12800000000000003},{"$f":"E39*E43/$C$32","v":0.13451636363636366},"W"]
[null,{"$f":"IF(D43>C18,\"As the Actual Current limit is higher than the desired current limit, power dissipation in the sense resistors will be high.\",\"\")","v":"As the Actual Current limit is higher than the desired current limit, power dissipation in the sense resistors will be high."}]
[null,{"$f":"IF(C43<C18,\"Min current limit is smaller than desired current limit. \",\"\")","v":"Min current limit is smaller than desired current limit. "}]
[null,{"$f":"IF(E44>C24,\"Max Power dissipation in sense resistors in more than desired power dissipation\",\"\")","v":"Max Power dissipation in sense resistors in more than desired power dissipation"}]
[null,{"$f":"IF(D43<C18,\"Typical Current limit is smaller than desired current limit. Either increase the current sense voltage threshold or lower the effective Rsense by adding more resistors in parallel\",\"\")","v":""}]
[null,{"$f":"IF(D44>C24,\"Typical Power dissipation in sense resistors in more than desired power dissipation\",\"\")","v":"Typical Power dissipation in sense resistors in more than desired power dissipation"}]
[null,"MOSFET Selection"]
[]
[null,"Low Rdson Channel or Bypass Channel"]
[null,"MOSFET Part Number","PSMN4R8-100BSE"]
[null,null,"Min","Typ","Max"]
[null,"MOSFET Rdson",3.7,4.0999999999999996,4.8,"mΩ"]
[null,"Desired power Dissipation per MOSFET",1,"W"]
[null,"Number of MOSFETs required per Channel",{"$f":"(E43*SQRT(E55*10^-3/C56))","v":5.1394671235498324}]
[null,"Number of MOSFETs populated per Channel",5]
[null,"Effective Rdson of the Bypass Channel",{"$f":"C55/C58","v":0.74},{"$f":"D55/C58","v":0.82},{"$f":"E55/C58","v":0.96},"mΩ"]
[]
[null,"High SOA Channel"]
[null,"MOSFET Part Number","IXTQ170N10P"]
[null,null,"Min","Typ","Max"]
[null,"MOSFET Rdson",5,7,9,"mΩ"]
[null,"Number of MOSFETs installed",1]
[null,"Effective Rdson of the High SOA Channel",{"$f":"C64/C65","v":5},{"$f":"D64/C65","v":7},{"$f":"E64/C65","v":9},"mΩ"]
[]
[null,"PowerPath","Min","Typ","Max"]
[null,"Effective Rdson of the Power Path",{"$f":"(C66*C59)/(C59+C66)","v":0.64459930313588854},{"$f":"(D66*D59)/(D59+D66)","v":0.73401534526854206},{"$f":"(E66*E59)/(E59+E66)","v":0.86746987951807231},"mΩ"]
[null,"Voltage Drop Across the MOSFETs during Current Limit (Bypass + SOA)",{"$f":"C43*C69/1000","v":4.5032600821057714E-2},{"$f":"D43*D69/1000","v":5.2849104859335035E-2},{"$f":"E43*E69/1000","v":6.4350492880613369E-2},"V"]
[null,"Maximum DC Curent in Bypass Channel",{"$f":"C70/C59*1000","v":60.854865974402315},{"$f":"D70/D59*1000","v":64.450127877237847},{"$f":"E70/E59*1000","v":67.031763417305598},"A"]
[null,"Maximum DC Current in SOA Channel",{"$f":"C70/C64","v":9.0065201642115424E-3},{"$f":"D70/D64","v":7.5498721227621477E-3},{"$f":"E70/E64","v":7.1500547645125968E-3},"A"]
[null,"Maximum Current in SOA Channel during a Transient Event",{"$f":"C43","v":69.861386138613852},{"$f":"D43","v":72.000000000000014},{"$f":"E43","v":74.181818181818187},{"$f":"F43","v":"A"}]
[null,"Maximum DC power dissipation in Bypass channel MOSFET",{"$f":"((C71/$C$58)^2)*C55/1000","v":0.54809057748884549},{"$f":"((D71/$C$58)^2)*D55/1000","v":0.68122631327633898},0.86270540291205666,"W"]
[null,"Maximum DC power dissipation in SOA channel MOSFET",{"$f":"((C72/$C$65)^2)*C64/1000","v":4.0558702734174559E-7},{"$f":"((D72/$C$65)^2)*D64/1000","v":3.9900398349042711E-7},{"$f":"((E72/$C$65)^2)*E64/1000","v":4.601095482197635E-7},"W"]
[null,{"$f":"IF(E74>C56,\"Maximum power dissipation per MOSFET in bypass channel is more than desired power dissipation. Either add more MOSFETs in bypass channel or use a lower Rdson MOSFET\",\"\")","v":""}]
[null,{"$f":"IF(E75>C65,\"Maximum power dissipation per MOSFET in bypass channel is more than desired power dissipation. Either add more MOSFETs or use a lower Rdson MOSFET\",\"\")","v":""}]
[null,{"$f":"_xlfn.CONCAT(\"FET BAD THRESHOLD must be set higher than \",ROUND(E70,3), \"V. This Threshold can be programmed using register CONFIG_2 [0x0E]\")","v":"FET BAD THRESHOLD must be set higher than 0.064V. This Threshold can be programmed using register CONFIG_2 [0x0E]"}]
[null,"FET BAD THRESHOLD","0.102","V"]
[null,"FET BAD THRESHOLD [0x0E][7:6] should be programmed to value",{"$f":"IF(C79='Register Map'!E64,'Register Map'!D64,(IF(C79='Register Map'!E65,'Register Map'!D65,(IF(C79='Register Map'!E66,'Register Map'!D66,(IF(C79='Register Map'!E67,'Register Map'!D67,0)))))))","v":"01"}]
[null,{"$f":"IF(ABS(C79)>ABS(E70),\"\",\"FET BAD THRESHOLD must be selected higher that the Maximum Voltage Drop Across MOSFETs during DC Operation\")","v":""}]
[]
[null,"FET BAD TIMER DELAY: If voltage across the MOSFET stays above the FET BAD THRESHOLD voltage for time euqal to FET BAD TIMER DELAY, MOSFET is flagged as BAD MOSFET. It is important that FET BAD TIMER Delay should be set higer than time for all the valid secnario like charging the output cap during startup or input step where MOSFET operates in  linear region."]
[]
[null,"FET BAD TIMER Delay","0.512","sec"]
[null,"FET BAD TIMER Delay [0X0E][5:4] should be programmed to value",{"$f":"IF(C85='Register Map'!E69,'Register Map'!D69,(IF(C85='Register Map'!E70,'Register Map'!D70,(IF(C85='Register Map'!E71,'Register Map'!D71,(IF(C85='Register Map'!E72,'Register Map'!D72,0)))))))","v":"01"}]
[]
[]
[null,"Timer Cap Calculation"]
[]
[null,"Start up Mode : Please select if system should start up using dv/dt mode (using RAMP cap) or Current Limit Mode","dv/dt Mode"]
[null,{"$f":"IF(C91=\"dv/dt Mode\",\"Go to Row#117\",\"Go to Row#83\")","v":"Go to Row#117"}]
[]
[null,"Start up Mode : Start up Current is Controlled by Start up Foldback in Current Limit Mode",null,"dv/dt Control is disabled"]
[null,"CONTROL_1 [0x0A][6] should be programmed to 0"]
[null,"Foldback Ratio","20","Use 10% foldback whenever posible"]
[null,"CONFIG_1 [0x0D][3:2] should be programmed to value",{"$f":"IF(C96='Register Map'!$E$54,'Register Map'!$D$54,(IF(C96='Register Map'!$E$57,'Register Map'!$D$57,(IF(C96='Register Map'!$E$55,'Register Map'!$D$55,(IF(C96='Register Map'!$E$56,'Register Map'!$D$56,0)))))))","v":"10"}]
[null,null,"Min","Typ","Max"]
[null,"Total Inrush Current",{"$f":"C96*C43/100","v":13.97227722772277},{"$f":"C96*D43/100","v":14.400000000000002},{"$f":"C96*E43/100","v":14.836363636363638},"A"]
[null,"Maximum time to charge the Load Capacitor",{"$f":"General!C21*ABS(C9)/E99/1000","v":8.5162377450980387},{"$f":"General!D21*ABS(C9)/D99/1000","v":9.2361111111111089},{"$f":"General!E21*ABS(C9)/C99/1000","v":9.9947916666666679},"ms"]
[]
[null,"TMR Current",{"$f":"IF($C$97=\"00\",ABS(SpecSheet!G19),(IF($C$97=\"01\",ABS(SpecSheet!G20),(IF($C$97=\"10\",ABS(SpecSheet!G21),(IF($C$97=\"11\",ABS(SpecSheet!G22),0)))))))","v":39},{"$f":"IF($C$97=\"00\",ABS(SpecSheet!H19),(IF($C$97=\"01\",ABS(SpecSheet!H20),(IF($C$97=\"10\",ABS(SpecSheet!H21),(IF($C$97=\"11\",ABS(SpecSheet!H22),0)))))))","v":42},{"$f":"IF($C$97=\"00\",ABS(SpecSheet!I19),(IF($C$97=\"01\",ABS(SpecSheet!I20),(IF($C$97=\"10\",ABS(SpecSheet!I21),(IF($C$97=\"11\",ABS(SpecSheet!I22),0)))))))","v":45},"uA"]
[null,"TMR Current",{"$f":"(C102+2)/2","v":20.5},{"$f":"(D102+2)/2","v":22},{"$f":"(E102+2)/2","v":23.5},"uA"]
[null,"TMR Fault Threshold",{"$f":"SpecSheet!G25","v":2.028},{"$f":"SpecSheet!H25","v":2.048},{"$f":"SpecSheet!I25","v":2.0680000000000001},"V"]
[null,"TMR Cap should be greater than",null,{"$f":"((E103*E100/C104)*(1+((D107+1)/100)))","v":122.76640059993427},null,"nF"]
[null,"TMR Cap Populated",null,220,null,"nF"]
[null,"Timer Cap Tolerance",null,5,null,"%"]
[null,"Actual Timer Cap Value",{"$f":"(1-(D107/100))*D106","v":209},{"$f":"D106","v":220},{"$f":"(1+(D107/100))*D106","v":231},"nF"]
[null,"During startup, Timer will trip after",{"$f":"C108*C104/E103","v":18.036255319148939},{"$f":"D108*D104/D103","v":20.48},{"$f":"E108*E104/C103","v":23.302829268292683},"ms"]
[null,{"$f":"IF(C109>E100,\"\",\"TMR cap should only trip after the load cap has been fully charged. Please select a higher TMR cap value\")","v":""}]
[null,"During Input Step:","Min","Typ","Max"]
[null,"Current Limit",{"$f":"C43","v":69.861386138613852},{"$f":"D43","v":72.000000000000014},{"$f":"E43","v":74.181818181818187},"A"]
[null,"Load Current (For constant power load, average load current)",null,{"$f":"((C6/C8)+(C6/C9))/2","v":37.321428571428569},null,"A"]
[null,"Current available to charge the output cap",{"$f":"C112-D113","v":32.539957567185283},{"$f":"D112-D113","v":34.678571428571445},{"$f":"E112-D113","v":36.860389610389618},"A"]
[null,"Maximum time to charge the Load Capacitor",{"$f":"General!C21*C12/E114/1000","v":1.4690566370122431},{"$f":"General!D21*C12/D114/1000","v":1.64366632337796},{"$f":"General!E21*C12/C114/1000","v":1.8392771372374301},"ms"]
[null,"TMR Current",{"$f":"ABS(SpecSheet!G24)","v":192},{"$f":"ABS(SpecSheet!H24)","v":202},{"$f":"ABS(SpecSheet!I24)","v":212},"uA"]
[null,"TMR Fault Threshold",{"$f":"SpecSheet!G25","v":2.028},{"$f":"SpecSheet!H25","v":2.048},{"$f":"SpecSheet!I25","v":2.0680000000000001},"V"]
[null,"TMR Cap should be greater than",null,{"$f":"((E116*E115/C117)*(1+((D107+1)/100)))","v":203.80786897435667},null,"nF"]
[null,"During input step, Timer will trip after",{"$f":"C108*C117/E116","v":1.999301886792453},{"$f":"D108*D117/D116","v":2.2304950495049507},{"$f":"E108*E117/C116","v":2.4880625000000003},"ms"]
[null,{"$f":"IF(E115>C119,\"Timer will expire before the system is able to ride through the step. Use a bigger Timer cap\",\"\")","v":""}]
[null,"During Output Short: Short into 0 ohm Resistor"]
[null,"Current Limit",{"$f":"$C$96*C43/100","v":13.97227722772277},{"$f":"$C$96*D43/100","v":14.400000000000002},{"$f":"$C$96*E43/100","v":14.836363636363638},"A"]
[null,"During input step, Timer will trip after",{"$f":"C119","v":1.999301886792453},{"$f":"D119","v":2.2304950495049507},2.4880625000000003,"ms"]
[]
[null,{"$f":"_xlfn.CONCAT(\"DURING STARTUP: Please check the SOA of the MOSFET in high SOA channel to check if selected MOSFET can handle \",ABS(C9),\"V and \",ROUND(E99,3),\"A for \",ROUND(E100,3),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING STARTUP: Please check the SOA of the MOSFET in high SOA channel to check if selected MOSFET can handle 70V and 14.836A for 9.995ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,{"$f":"_xlfn.CONCAT(\"DURING INPUT STEP: Please check the SOA of the MOSFET in high SOA channel to check if selected MOSFET can handle \",ABS(C12),\"V and \",ROUND(E112,3),\"A for \",ROUND(E115,3),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING INPUT STEP: Please check the SOA of the MOSFET in high SOA channel to check if selected MOSFET can handle 30V and 74.182A for 1.839ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,{"$f":"_xlfn.CONCAT(\"DURING OUTPUT SHORT:  Please check the SOA of the MOSFET to check if selected MOSFET can handle \",ABS(C9),\"V and \",ROUND(E122,3),\"A for \",INT(E123),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING OUTPUT SHORT:  Please check the SOA of the MOSFET to check if selected MOSFET can handle 70V and 14.836A for 2ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[]
[null,"Start up Mode: dV/dt Control is Enabled"]
[null,"CONTROL_1 [0x0A][6] should be programmed to 1"]
[null,null,"Min","Typ","Max"]
[null,"Desired Inrush Current",null,8,null,"A"]
[null,"Calculated Ramp Cap Value",null,{"$f":"ABS(SpecSheet!H26)*General!D126*General!D21/D132/1000","v":24.391345190380761},null,"nF"]
[null,"RAMP Cap Value Installed",null,25.67,null,"nF"]
[null,"Ramp Cap Tolerance",null,5,null,"%"]
[null,"Actual Ramp Cap Value",{"$f":"(1-(D135/100))*D134","v":24.386500000000002},{"$f":"D134","v":25.67},{"$f":"(1+(D135/100))*D134","v":26.953500000000002},"nF"]
[null,"Actual Inrush Current",{"$f":"ABS(SpecSheet!G26)*General!C126*General!C21/C136/1000","v":6.7091842971544411},{"$f":"ABS(SpecSheet!H26)*General!D126*General!D21/D136/1000","v":7.6015099931065873},{"$f":"ABS(SpecSheet!I26)*General!E126*General!E21/E136/1000","v":8.5264714166245295},"A"]
[null,"Foldback Ratio",null,"20"]
[null,"CONFIG_1 [0x0D][3:2] should be programmed to value",null,{"$f":"IF(D138='Register Map'!$E$54,'Register Map'!$D$54,(IF(D138='Register Map'!$E$57,'Register Map'!$D$57,(IF(D138='Register Map'!$E$55,'Register Map'!$D$55,(IF(D138='Register Map'!$E$56,'Register Map'!$D$56,0)))))))","v":"10"}]
[null,"Current Limit during Startup",{"$f":"C43*$D$138/100","v":13.97227722772277},{"$f":"D43*$D$138/100","v":14.400000000000002},{"$f":"E43*$D$138/100","v":14.836363636363638},"A"]
[null,{"$f":"IF(D137>D132,\"Inrush current is higher than desired value\",\"\")","v":""}]
[null,"Time to Charge the Load Capacitor",{"$f":"General!C21*ABS(C9)/E137/1000","v":14.818556683794009},{"$f":"General!D21*ABS(C9)/D137/1000","v":17.496523732865018},{"$f":"General!E21*ABS(C9)/C137/1000","v":20.814750916773832},"ms"]
[]
[null,"During Input Step:","Min","Typ","Max"]
[null,"Current Limit",{"$f":"C43","v":69.861386138613852},{"$f":"D43","v":72.000000000000014},{"$f":"E43","v":74.181818181818187},"A"]
[null,"Load Current",null,{"$f":"((C6/C9)+(C6/C8))/2","v":37.321428571428569},null,"A"]
[null,"Current available to charge the output cap",{"$f":"C145-D146","v":32.539957567185283},{"$f":"D145-D146","v":34.678571428571445},{"$f":"E145-D146","v":36.860389610389618},"A"]
[null,"Maximum time to charge the Load Capacitor",{"$f":"General!C21*$C$12/E147/1000","v":1.4690566370122431},{"$f":"General!D21*$C$12/D147/1000","v":1.64366632337796},{"$f":"General!E21*$C$12/C147/1000","v":1.8392771372374301},"ms"]
[null,"TMR Current",{"$f":"ABS(SpecSheet!G23)","v":192},{"$f":"ABS(SpecSheet!H23)","v":202},{"$f":"ABS(SpecSheet!I23)","v":212},"uA"]
[null,"TMR Fault Threshold",{"$f":"SpecSheet!G25","v":2.028},{"$f":"SpecSheet!H25","v":2.048},{"$f":"SpecSheet!I25","v":2.0680000000000001},"V"]
[null,"TMR Cap should be greater than",null,{"$f":"((E149*E148/C150)*(1+(1+D153)/100))","v":203.80786897435667},null,"nF"]
[null,"TMR Cap populated",null,220,null,"nF"]
[null,"Timer Cap Tolerance",null,5,null,"%"]
[null,"Actual Timer Cap Value",{"$f":"(1-(D153/100))*D152","v":209},{"$f":"D152","v":220},{"$f":"(1+(D153/100))*D152","v":231},"nF"]
[null,"During input step, Timer will trip after",{"$f":"C154*C150/E149","v":1.999301886792453},{"$f":"D154*D150/D149","v":2.2304950495049507},{"$f":"E154*E150/C149","v":2.4880625000000003},"ms"]
[null,{"$f":"IF(E148>C155,\"Timer will expire before the load cap has been fully charged and will shut the system down. Install a bigger load cap or increase the current limit\",\"\")","v":""}]
[null,{"$f":"IF(AND((C140<E137),(C155<E142)),\"During Startup, timer will expire before load cap gets fully charged and systme will never turn on. Either increase the Timer cap or increase inrsuh current\",\"\")","v":""}]
[null,"During Output Short: Short into 0 ohm Resistor"]
[null,"Current Limit",{"$f":"$D$138*C43/100","v":13.97227722772277},{"$f":"$D$138*D43/100","v":14.400000000000002},{"$f":"$D$138*E43/100","v":14.836363636363638},"A"]
[null,"During input step, Timer will trip after",{"$f":"C155","v":1.999301886792453},{"$f":"D155","v":2.2304950495049507},2.4880625000000003,"ms"]
[null,{"$f":"IF(AND((D137>D140),(D142>D155)),\"Device is starting up in Current Limit and Timer is going to expire before output cap is charged up which will not turn on the circuit properly. \",\"\")","v":""}]
[null,{"$f":"_xlfn.CONCAT(\"DURING STARTUP:Please check the SOA of the MOSFET in high SOA channel to check if selected MOSFET can handle \",ABS(C9),\"V and \",ROUND(E137,3),\"A for \",ROUND(E142,3),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING STARTUP:Please check the SOA of the MOSFET in high SOA channel to check if selected MOSFET can handle 70V and 8.526A for 20.815ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,{"$f":"_xlfn.CONCAT(\"DURING INPUT STEP: Please check the SOA of the MOSFET in high SOA channel to check if selected MOSFET can handle \",ABS(C12),\"V and \",ROUND(E145,3),\"A for \",ROUND(E148,3),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING INPUT STEP: Please check the SOA of the MOSFET in high SOA channel to check if selected MOSFET can handle 30V and 74.182A for 1.839ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,{"$f":"_xlfn.CONCAT(\"DURING OUTPUT SHORT:  Please check the SOA of the MOSFET  in high SOA channel to check if selected MOSFET can handle \",ABS(C9),\"V and \",ROUND(E159,3),\"A for \",ROUND(E160,3),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING OUTPUT SHORT:  Please check the SOA of the MOSFET  in high SOA channel to check if selected MOSFET can handle 70V and 14.836A for 2.488ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,"Simulate the circuit in LTspice. Use SOAtherm simulation using LTspice to check SOA. "]
[]
[]
[null,"Bill Of Meterials"]
[null,"Component","Value","Units","Quantity","Other Specs"]
[null,"Rs1",{"$f":"C28","v":2},{"$f":"D28","v":"mΩ"},{"$f":"C32","v":9},{"$f":"_xlfn.CONCAT(Q31,\"%\",\", \",C22,D22)","v":"1%, 0.25W"}]
[null,"CTMR",{"$f":"IF(C91=\"dv/dt Mode\",D152,D106)","v":220},{"$f":"IF(C91=\"dv/dt Mode\",F152,F106)","v":"nF"},1,{"$f":"IF(C91=\"dv/dt Mode\",_xlfn.CONCAT(D153,F153,\", \",\"25V\"),_xlfn.CONCAT(D107,F107,\", \",\"25V\"))","v":"5%, 25V"}]
[null,"CRAMP",{"$f":"IF(C91=\"dv/dt Mode\",D134,\"Do not Install\")","v":25.67},{"$f":"IF(C91=\"dv/dt Mode\",F134,\"\")","v":"nF"},{"$f":"IF(C91=\"dv/dt Mode\",1,\"\")","v":1},{"$f":"IF(C91=\"dv/dt Mode\",_xlfn.CONCAT(D135,F135,\", \",\"25V\"),\"\")","v":"5%, 25V"}]
[null,"MOSFET (M1)",{"$f":"C62","v":"IXTQ170N10P"},null,{"$f":"C65","v":1}]
[null,"MOSFET (M2)",{"$f":"C53","v":"PSMN4R8-100BSE"},null,{"$f":"C58","v":5}]

{"sheet":"LTC4284 Low Stress Staged Start","index":4,"n_rows":202,"n_cols":17,"rows_kept":202,"cut":false,"hidden":false,"merged":[[200,2,200,3],[201,2,201,3],[0,1,0,3],[53,1,53,5],[54,1,54,5],[44,1,44,5],[93,2,93,4],[103,2,103,4],[118,1,118,5]]}
[null,"Low Stress Staged Start Topology"]
[null,{"$f":"General!B1","v":"Please enter the data in white cells"}]
[null,{"$f":"General!B2","v":"LTC4284 Design Tool"}]
[]
[null,{"$f":"General!B4","v":"System Specifications"}]
[null,{"$f":"General!B5","v":"Power Requirement (W)"},{"$f":"General!C5","v":1900},{"$f":"General!D5","v":"W"}]
[null,{"$f":"General!B6","v":"Line Step"},{"$f":"General!C6","v":"No"}]
[null,{"$f":"General!B7","v":"Voltage Supply Min (V)"},{"$f":"General!E7","v":40},{"$f":"General!D7","v":"V"}]
[null,{"$f":"General!B8","v":"Voltage Supply Max (V)"},{"$f":"General!E8","v":70},{"$f":"General!D8","v":"V"}]
[null,{"$f":"General!B9","v":"Nominal Voltage"},{"$f":"General!E9","v":48},{"$f":"General!D9","v":"V"}]
[null,{"$f":"General!B18","v":"Selected Output Capacitor Value"},{"$f":"General!C18","v":1900},{"$f":"General!D18","v":"uF"}]
[null,"Maximum Load Current",{"$f":"C6/ABS(C8)","v":47.5},"A"]
[null,"Current Limit of the system",70,"A"]
[null,{"$f":"IF(C13>=C12,\"\",\"Current limit should be set above the maximum load current\")","v":""}]
[null,"Current Limit of Low Rdson Channel",66,"A"]
[null,"Current Limit of Trickle Channel",4,"A"]
[]
[null,{"$f":"IF(SUM(C15:C16)=C13,\"\",\"Current limit of the system is not equal to sum of the current limits of noth the channels\")","v":""},null,null,null,null,null,null,null,null,"Resistor Power Rating"]
[null,"Sense Resistor Selection",null,null,null,null,null,null,null,null,0.05]
[null,"Low Rdson Channel"]
[null,null,null,null,null,null,null,null,null,null,6.2E-2]
[null,"Current Limit of Low Rdson Channel",{"$f":"C15","v":66},"A",null,null,null,null,null,null,0.1]
[null,null,null,null,null,null,null,null,null,null,0.125]
[null,"Maximum Current ",{"$f":"C22","v":66},"A",null,null,null,null,null,null,0.25]
[null,"Current Sense Voltage Threshold",1.6E-2,"V",null,null,null,null,null,null,0.5]
[null,null,null,null,null,null,null,null,null,null,1]
[null,"Maximum Power Dissipation in Sense Resistor Per Channel",{"$f":"C25*C24","v":1.056},"W"]
[null,"Power Rating  of the sense resistor",0.25,"W"]
[null,"Suggested Allowed Power Dissipation in Sense Resistor",{"$f":"C28/2","v":0.125},"W"]
[null,"Allowed Power Dissipation in Sense Resistor",0.15,"W"]
[]
[null,"Effective Rsense required per Channel",{"$f":"C25/C24*1000","v":0.24242424242424243},"mΩ"]
[null,"Suggested resistor value of Rsense ",{"$f":"C32*C37","v":1.706666666666667},"mΩ"]
[null,"Installed resistor value for Rsense",2,"mΩ"]
[null,"Rsense Tolerance","E96 (1%)"]
[null,"Number of Rsense Required in Parallel to achieve Rsense resistance requirement",{"$f":"IF(INT(C34/C32)<(C34/C32),INT(C34/C32)+1,(C34/C32))","v":9}]
[null,"Number of Sense Resistors Required to achieve Rsense Power requirement",{"$f":"C27/C30","v":7.0400000000000009},null,null,null,null,null,null,null,"E96 (1%)",96,1,{"$f":"IF($C$35=K37,1,0)","v":1},null,"Active E","active %"]
[null,"Number of Sense Resistors Populated per channel",9,null,null,null,null,null,null,null,"E192 (0.5%)",192,0.5,{"$f":"IF($C$35=K38,1,0)","v":0},null,{"$f":"IF(N37=1,96,192)","v":96},{"$f":"IF(N37=1,M37,IF(N38=1,M38,IF(N39=1,M39,IF(N40=1,M40,1))))","v":1}]
[null,{"$f":"IF(INT(C38)>=MAX(INT(C37)),\"\",\"Need to add more sense resistors in order to achieve required safe power dissipation number \")","v":""},null,null,null,null,null,null,null,null,"E192 (0.25%)",192,0.25,0]
[null,{"$f":"IF(INT(C38)>=MAX(INT(C36)),\"\",\"Need to add more sense resistors in order to achieve required Rsense Value \")","v":""},null,null,null,null,null,null,null,null,"E192 (0.1%)",192,0.1,{"$f":"IF($C$35=K40,1,0)","v":0}]
[null,null,"Min","Typ","Max"]
[null,"Actual Effective Rsense",{"$f":"(C34-(C34*Q38/100))/C38","v":0.22},{"$f":"C34/C38","v":0.22222222222222221},{"$f":"(C34+(C34*Q38/100))/C38","v":0.22444444444444445},"mΩ"]
[]
[null,"Actual Current Sense Voltage Threshold",{"$f":"0.98*D44","v":1.47E-2},1.4999999999999999E-2,{"$f":"1.02*D44","v":1.5299999999999999E-2},"V"]
[null,"User might have to change the value of the Actual Current Sense Voltage Threshold because of the value of the sense resistor available. This can change the power requirements and user will have to redo the calculations by changing the Current Sense Voltage Threshold"]
[null,{"$f":"_xlfn.CONCAT(\"Current Sense Voltage Threshold [0x0D][7:4] should be programmed to value \")","v":"Current Sense Voltage Threshold [0x0D][7:4] should be programmed to value "},{"$f":"(IF(D44='Register Map'!E36,'Register Map'!D36,(IF(D44='Register Map'!E37,'Register Map'!D37,(IF(D44='Register Map'!E38,'Register Map'!D38,(IF(D44='Register Map'!E39,'Register Map'!D39,(IF(D44='Register Map'!E40,'Register Map'!D40,(IF(D44='Register Map'!E41,'Register Map'!D41,(IF(D44='Register Map'!E42,'Register Map'!D42,(IF(D44='Register Map'!E43,'Register Map'!D43,(IF(D44='Register Map'!E44,'Register Map'!D44,(IF(D44='Register Map'!E45,'Register Map'!D45,(IF(D44='Register Map'!E46,'Register Map'!D46,(IF(D44='Register Map'!E47,'Register Map'!D47,(IF(D44='Register Map'!E48,'Register Map'!D48,(IF(D44='Register Map'!E49,'Register Map'!D49,(IF(D44='Register Map'!E50,'Register Map'!D50,(IF(D44='Register Map'!E51,'Register Map'!D51,0))))))))))))))))))))))))))))))))","v":"0000"}]
[]
[]
[null,"Actual Maximum Current",{"$f":"$C$44/E42*1000","v":65.495049504950501},{"$f":"$D$44/D42*1000","v":67.5},{"$f":"$E$44/C42*1000","v":69.545454545454533},"A"]
[null,"Actual Power Dissipation per Sense Resistor",{"$f":"$D$44*C49/INT($C$38)","v":0.10915841584158417},{"$f":"$D$44*D49/INT($C$38)","v":0.11249999999999999},{"$f":"$D$44*E49/INT($C$38)","v":0.11590909090909089},"W"]
[null,"Actual Current Limit for the System",{"$f":"C49","v":65.495049504950501},{"$f":"D49","v":67.5},{"$f":"E49","v":69.545454545454533},"A"]
[null,{"$f":"IF(E50>(C30),\"Max power dissipation in sense resistors is higher than desired value. \",\"\")","v":""}]
[null,{"$f":"IF(C24>C51,\"Min current limit for the system is lower than the desired. \",\"\")","v":"Min current limit for the system is lower than the desired. "}]
[null,{"$f":"IF(D50>(C30),\"Typical power dissipation in sense resistors is higher than desired value. You can either increase the number of sense resistors in the channel or decrease the actual current sense voltage threshold or use sense resistor with higher power rating\",\"\")","v":""}]
[null,{"$f":"IF(C24>D51,\"Tyical current limit for the system is lower than the desired. Either increase current sense voltage threshold or lower the effective Rsense by adding more resistors\",\"\")","v":""}]
[null,"Trickle Channel"]
[]
[null,"Current Limit",4,"A"]
[null,{"$f":"IF(C58>=C16,\"\",\"Current limit should be set above the maximum load current\")","v":""}]
[null,"Maximum Current ",{"$f":"C58","v":4},"A"]
[null,"Current Sense Voltage Threshold",{"$f":"D44","v":1.4999999999999999E-2},"V"]
[]
[null,"Maximum Power Dissipation in Sense Resistor Per Channel",{"$f":"C61*C60","v":0.06},"W"]
[null,"Power Rating  of the sense resistor",0.25,"W"]
[null,"Suggested Allowed Power Dissipation in Sense Resistor",{"$f":"C64/2","v":0.125},"W"]
[null,"Allowed Power Dissipation in Sense Resistor",0.125,"W"]
[null,"Number of Sense Resistors Required to achieve Rsense Power requirement",{"$f":"C63/C66","v":0.48}]
[null,"Number of Sense Resistors Populated per channel",1]
[null,{"$f":"IF(INT(C68)>=INT(C67),\"\",\"Need to add more sense resistors in order to achieve required safe power dissipation number\")","v":""}]
[null,"Effective Rsense required per Channel",{"$f":"C61/C60*1000","v":3.75},"mΩ"]
[null,"Installed resistor value for Rsense",4,"mΩ"]
[null,"Rsense Tolerance","E96 (1%)"]
[null,"Number of Rsense Required in Parallel to achieve Rsense resistance requirement",{"$f":"C71/C70","v":1.0666666666666667}]
[]
[]
[null,null,"Min","Typ","Max"]
[null,"Actual Effective Rsense",{"$f":"(C71-(C71*Q38/100))/C68","v":3.96},{"$f":"C71/C68","v":4},{"$f":"(C71+(C71*Q38/100))/C68","v":4.04},"mΩ"]
[]
[null,"Actual Maximum Current",{"$f":"$C$44/E77*1000","v":3.6386138613861383},{"$f":"$D$44/D77*1000","v":3.75},{"$f":"$E$44/C77*1000","v":3.8636363636363633},"A"]
[null,"Actual Power Dissipation per Sense Resistor",{"$f":"$C$44*C79/INT($C$36)","v":5.9430693069306923E-3},{"$f":"$D$44*D79/INT($C$36)","v":6.2499999999999995E-3},{"$f":"$E$44*E79/INT($C$36)","v":6.5681818181818168E-3},"W"]
[null,{"$f":"IF(C80>C66,\"Too much power dissipation in the sense resistor. Either increase the number of sense resistors or use a higher value sense resistor or lower the current\",\"\")","v":""}]
[null,{"$f":"IF(C79<C60,\"Current limit of the trickle channel is lower than the desired value\",\"\")","v":"Current limit of the trickle channel is lower than the desired value"}]
[null,"Total Current Limit of the System",{"$f":"C79+C51","v":69.133663366336634},{"$f":"D79+D51","v":71.25},73.409090909090892,"A"]
[null,{"$f":"IF(D83<C13,\"Typical Current limit of the system is lower than the desired current limit. Either increase the Current Sense Voltage Threshold or  lower the value of Rsense.\",\"\")","v":""}]
[null,{"$f":"IF(C83<C13,\"Min Current limit of the system is lower than the desired current limit\",\"\")","v":"Min Current limit of the system is lower than the desired current limit"}]
[null,"Averaging Resistors"]
[null,"RA1 to RA2 Ratio",null,{"$f":"D77/D42","v":18}]
[null,"Selected value for RA1",null,15,null,"Ω"]
[null,"Suggested value for RA2",null,{"$f":"D87/D88","v":1.2},null,"Ω"]
[null,"Selected value for RA2",null,1,null,"Ω"]
[]
[null,"MOSFET Selection"]
[null,"Low Rdson Channel"]
[null,"MOSFET Part Number","IPT020N10N3"]
[null,null,"Min","Typ","Max"]
[null,"MOSFET Rdson",1,1.7,2,"mΩ"]
[null,"Desired power Dissipation per MOSFET",1,"W"]
[null,"Number of MOSFETs required",{"$f":"IF((E49*SQRT(E96*10^-3/C97))>1,INT(E49*SQRT(E96*10^-3/C97)),1)","v":3}]
[null,"Number of MOSFETs populated per Channel",3]
[null,"Power Dissipation Per MOSFET",{"$f":"C49*C49*C96/(1000*INT(C99)*INT(C99))","v":0.47662238996176853},{"$f":"D49*D49*D96/(1000*INT(C99)*INT(C99))","v":0.86062499999999997},{"$f":"E49*E49*E96/(1000*INT(C99)*INT(C99))","v":1.0747933884297516},"W"]
[null,"Voltage Drop Across MOSFETs during current limit",{"$f":"C49*C96/(1000*INT(C99))","v":2.1831683168316834E-2},{"$f":"D49*D96/(1000*INT(C99))","v":3.8249999999999999E-2},{"$f":"E49*E96/(1000*INT(C99))","v":4.6363636363636357E-2},"V"]
[null,{"$f":"IF(C101>C97,\"Power dissipation per MOSFET is higher than the desired value\",\"\")","v":""}]
[null,"Trickle Channel"]
[null,"MOSFET Part Number","PSMN4R8-100BSE"]
[null,null,"Min","Typ","Max"]
[null,"MOSFET Rdson",3.7,4.0999999999999996,4.8,"mΩ"]
[null,"Desired power Dissipation per MOSFET",1,"W"]
[null,"Number of MOSFETs required",{"$f":"IF((E79*SQRT(E106*10^-3/C107))>1,INT(E79*SQRT(E106*10^-3/C107)),1)","v":1}]
[null,"Number of MOSFETs populated per Channel",1]
[null,"Power Dissipation Per MOSFET",{"$f":"C77*C77*C106/(1000*INT(C109)*INT(C109))","v":5.8021920000000005E-2},{"$f":"D77*D77*D106/(1000*INT(C109)*INT(C109))","v":6.5599999999999992E-2},{"$f":"E77*E77*E106/(1000*INT(C109)*INT(C109))","v":7.8343679999999999E-2},"W"]
[null,"Voltage Drop Across MOSFETs during current limit",{"$f":"C77*C106/(1000*INT(C109))","v":1.4652000000000002E-2},{"$f":"D77*D106/(1000*INT(C109))","v":1.6399999999999998E-2},{"$f":"E77*E106/(1000*INT(C109))","v":1.9392E-2},"V"]
[null,{"$f":"IF(D111>C107,\"Typical Power dissipation per MOSFET is higher than the desired value\",\"\")","v":""}]
[null,{"$f":"IF(C111>C107,\"Min Power dissipation per MOSFET is higher than the desired value\",\"\")","v":""}]
[null,{"$f":"_xlfn.CONCAT(\"FET BAD THRESHOLD must be set higher than \",MAX(ROUND(E111,3),ROUND(E101,3)), \"V. This Threshold can be programmed using register CONFIG_2 [0x0E]\")","v":"FET BAD THRESHOLD must be set higher than 0.046V. This Threshold can be programmed using register CONFIG_2 [0x0E]"}]
[null,"FET BAD THRESHOLD","0.143","V"]
[null,"FET BAD THRESHOLD [0x0E][7:6] should be programmed to value",{"$f":"IF(C115='Register Map'!E64,'Register Map'!D64,(IF(C115='Register Map'!E65,'Register Map'!D65,(IF(C115='Register Map'!E66,'Register Map'!D66,(IF(C115='Register Map'!E67,'Register Map'!D67,0)))))))","v":"10"}]
[null,{"$f":"IF(ABS(C115)>MAX(ABS(E111),ABS(E101)),\"\",\"FET BAD THRESHOLD must be selected higher that the Maximum Voltage Drop Across MOSFETs during DC Operation\")","v":""}]
[]
[null,"FET BAD TIMER DELAY: If voltage across the MOSFET stays above the FET BAD THRESHOLD voltage for time euqal to FET BAD TIMER DELAY, MOSFET is flagged as BAD MOSFET. It is important that FET BAD TIMER Delay should be set higer than time for all the valid secnario like charging the output cap during startup or input step where MOSFET operates in  linear region."]
[]
[null,"FET BAD TIMER Delay","0.256","sec"]
[null,"FET BAD TIMER Delay [0X0E][5:4] should be programmed to value",{"$f":"IF(C121='Register Map'!E69,'Register Map'!D69,(IF(C121='Register Map'!E70,'Register Map'!D70,(IF(C121='Register Map'!E71,'Register Map'!D71,(IF(C121='Register Map'!E72,'Register Map'!D72,0)))))))","v":"00"}]
[]
[]
[null,"Timer Cap Calculation"]
[]
[null,"Start up Mode : Please select if system should start up using dv/dt mode (using RAMP cap) or Current Limit Mode","dv/dt Mode"]
[]
[]
[null,"Start up Mode : Start up Current is Controlled by Start up Foldback in Current Limit Mode",null,"dv/dt Control is disabled (Not Recommended)"]
[null,"CONTROL_1 [0x0A][6] should be programmed to 0"]
[null,"Foldback Ratio","50",null,null,null,"Use 10% foldback whenever posible."]
[null,"CONFIG_1 [0x0D][3:2] should be programmed to value",{"$f":"IF(C132='Register Map'!$E$54,'Register Map'!$D$54,(IF(C132='Register Map'!$E$57,'Register Map'!$D$57,(IF(C132='Register Map'!$E$55,'Register Map'!$D$55,(IF(C132='Register Map'!$E$56,'Register Map'!$D$56,0)))))))","v":"01"}]
[null,null,"Min","Typ","Max"]
[null,"Total Inrush Current",{"$f":"C132*C79/100","v":1.8193069306930694},{"$f":"C132*D79/100","v":1.875},{"$f":"C132*E79/100","v":1.9318181818181817},"A"]
[]
[null,"Inrush Current per FET",{"$f":"C135/C109","v":1.8193069306930694},{"$f":"D135/C109","v":1.875},{"$f":"E135/C109","v":1.9318181818181817},"A"]
[null,"Maximum time to charge the Load Capacitor",{"$f":"General!C21*ABS(C9)/E135/1000","v":65.404705882352943},{"$f":"General!D21*ABS(C9)/D135/1000","v":70.933333333333323},{"$f":"General!E21*ABS(C9)/C135/1000","v":76.760000000000005},"ms"]
[]
[null,"TMR Current",{"$f":"IF($C$133=\"00\",ABS(SpecSheet!G19),(IF($C$133=\"01\",ABS(SpecSheet!G20),(IF($C$133=\"10\",ABS(SpecSheet!G21),(IF($C$133=\"11\",ABS(SpecSheet!G22),0)))))))","v":96},{"$f":"IF($C$133=\"00\",ABS(SpecSheet!H19),(IF($C$133=\"01\",ABS(SpecSheet!H20),(IF($C$133=\"10\",ABS(SpecSheet!H21),(IF($C$133=\"11\",ABS(SpecSheet!H22),0)))))))","v":102},{"$f":"IF($C$133=\"00\",ABS(SpecSheet!I19),(IF($C$133=\"01\",ABS(SpecSheet!I20),(IF($C$133=\"10\",ABS(SpecSheet!I21),(IF($C$133=\"11\",ABS(SpecSheet!I22),0)))))))","v":108},"uA"]
[null,"TMR Current",{"$f":"(C140+2)/2","v":49},{"$f":"(D140+2)/2","v":52},{"$f":"(E140+2)/2","v":55},"uA","Timer current is not a constast current and depends upon Vds. Use the average current for calculations."]
[null,"TMR Fault Threshold",{"$f":"SpecSheet!G25","v":2.028},{"$f":"SpecSheet!H25","v":2.048},{"$f":"SpecSheet!I25","v":2.0680000000000001},"V"]
[null,"TMR Cap should be greater than",null,{"$f":"(E141*E138/C142)*(1+((D145+1)/100))","v":2206.6607495069038},null,"nF"]
[null,"TMR Cap Populated",null,1991,null,"nF"]
[null,"Timer Cap Tolerance",null,5,null,"%"]
[null,"Actual Timer Cap Value",{"$f":"(1-(D145/100))*D144","v":1891.4499999999998},{"$f":"D144","v":1991},{"$f":"(1+(D145/100))*D144","v":2090.5500000000002},"nF"]
[null,"During startup, Timer will trip after",{"$f":"C146*C142/E141","v":69.742919999999998},{"$f":"D146*D142/D141","v":78.414769230769238},{"$f":"E146*E142/C141","v":88.229742857142867},"ms"]
[null,{"$f":"IF(C147>E138,\"\",\"TMR cap should only trip after the load cap has been fully charged. Please select a higher TMR cap value\")","v":"TMR cap should only trip after the load cap has been fully charged. Please select a higher TMR cap value"}]
[null,"During Output Short: Short into 0 ohm resistor"]
[null,"Current Limit During Output Short (For Trickle Channel)",{"$f":"C132*C79/100","v":1.8193069306930694},{"$f":"C132*D79/100","v":1.875},{"$f":"C132*E79/100","v":1.9318181818181817},"A"]
[null,"Current Limit During Output Short (For Bypass Channel)",{"$f":"$C$132*C51/100","v":32.74752475247525},{"$f":"$C$132*D51/100","v":33.75},{"$f":"$C$132*E51/100","v":34.772727272727266},"A"]
[null,"TMR Current",{"$f":"ABS(SpecSheet!G24)","v":192},{"$f":"ABS(SpecSheet!H24)","v":202},{"$f":"ABS(SpecSheet!I24)","v":212},"uA"]
[null,"TMR Fault Threshold",{"$f":"SpecSheet!G25","v":2.028},{"$f":"SpecSheet!H25","v":2.048},{"$f":"SpecSheet!I25","v":2.0680000000000001},"V"]
[null,"During Output short, Timer will trip after",{"$f":"C146*E153/C152","v":20.372492708333333},{"$f":"D146*D153/D152","v":20.185980198019802},{"$f":"E146*E153/C152","v":22.516965625000001},"ms"]
[]
[null,{"$f":"_xlfn.CONCAT(\"DURING STARTUP (Trickle Channe)l: Please check the SOA of the MOSFET to check if selected MOSFET can handle \",ABS(C9),\"V and \",D137,\"A for \",INT(D138),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING STARTUP (Trickle Channe)l: Please check the SOA of the MOSFET to check if selected MOSFET can handle 70V and 1.875A for 70ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,{"$f":"_xlfn.CONCAT(\"DURING OUTPUT SHORT (Trickle Channel):  Please check the SOA of the MOSFET to check if selected MOSFET in Trickle Channel can handle \",ABS(C9),\"V and \",ROUND(E150,3),\"A for \",MAX(INT(E154)),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the trickle channel MOSFET.\")","v":"DURING OUTPUT SHORT (Trickle Channel):  Please check the SOA of the MOSFET to check if selected MOSFET in Trickle Channel can handle 70V and 1.932A for 22ms. Otherwise, try to change the current limit and/or foldback ratio or the trickle channel MOSFET."}]
[null,{"$f":"_xlfn.CONCAT(\"DURING OUTPUT SHORT (Bypass Channel):  Please check the SOA of the MOSFET to check if each selected MOSFET in Bypass Channel can handle \",ABS(C9),\"V and \",ROUND(E151,3),\"A for \",MAX(INT(E154)),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the bypass channel MOSFET.\")","v":"DURING OUTPUT SHORT (Bypass Channel):  Please check the SOA of the MOSFET to check if each selected MOSFET in Bypass Channel can handle 70V and 34.773A for 22ms. Otherwise, try to change the current limit and/or foldback ratio or the bypass channel MOSFET."}]
[]
[null,"Start up Mode: dV/dt Control is Enabled"]
[null,"CONTROL_1 [0x0A][6] should be programmed to 1"]
[]
[null,"Desired Inrush Current",null,0.6,null,"A"]
[null,"Calculated Ramp Cap Value",null,{"$f":"ABS(SpecSheet!H26)*General!D126*General!D21/D163/1000","v":325.21793587174346},null,"nF"]
[null,"RAMP Cap Value Installed",null,370,null,"nF"]
[null,"Ramp Cap Tolerance",null,5,null,"%"]
[null,"Actual Ramp Cap Value",{"$f":"(1-(D166/100))*D165","v":351.5},{"$f":"D165","v":370},{"$f":"(1+(D166/100))*D165","v":388.5},"nF"]
[null,"Actual Inrush Current",{"$f":"ABS(SpecSheet!G26)*General!C126*General!C21/D165/1000","v":0.44219871043934267},{"$f":"ABS(SpecSheet!H26)*General!D126*General!D21/D165/1000","v":0.5273804365487732},{"$f":"ABS(SpecSheet!I26)*General!E126*General!E21/D165/1000","v":0.62113039818375493},"A"]
[null,"Foldback Ratio",null,"20",null,null,"Use 10% Foldback when ever possible"]
[null,"CONFIG_1 [0x0D][3:2] should be programmed to value",null,{"$f":"IF(D169='Register Map'!$E$54,'Register Map'!$D$54,(IF(D169='Register Map'!$E$57,'Register Map'!$D$57,(IF(D169='Register Map'!$E$55,'Register Map'!$D$55,(IF(D169='Register Map'!$E$56,'Register Map'!$D$56,0)))))))","v":"10"}]
[null,"Current Limit during Startup",{"$f":"C79*$D$169/100","v":0.7277227722772277},{"$f":"D79*$D$169/100","v":0.75},{"$f":"E79*$D$169/100","v":0.77272727272727271},"A"]
[null,{"$f":"IF(E168>C171,\"Inrush current will hit the current limit during start up and make the timer run. If you do not want to hit the current limit during start up, either increase the foldaback ratio or reduce the inrush current by increasing the Ramp cap\",\"\")","v":""}]
[null,"Time to Charge the Load Capacitor",{"$f":"General!C21*ABS(C9)/E168/1000","v":203.41944359744679},{"$f":"General!D21*ABS(C9)/D168/1000","v":252.18986292014245},{"$f":"General!E21*ABS(C9)/C168/1000","v":315.80824797352295},"ms"]
[]
[null,"During Output Short: Short into 0 ohm resistor"]
[null,"Current Limit During Output Short (For Trickle Channel)",{"$f":"ROUND(C79*$D$169/100,3)","v":0.72799999999999998},{"$f":"D79*$D$169/100","v":0.75},{"$f":"ROUND(E79*$D$169/100,3)","v":0.77300000000000002},"A"]
[null,"Current Limit During Output Short (For Bypass Channel)",{"$f":"ROUND($D$169/100*C51,3)","v":13.099},{"$f":"$D$169/100*D51","v":13.5},{"$f":"ROUND($D$169/100*E51,3)","v":13.909000000000001},"A"]
[null,"TMR Current",{"$f":"ABS(SpecSheet!G23)","v":192},{"$f":"ABS(SpecSheet!H23)","v":202},{"$f":"ABS(SpecSheet!I23)","v":212},"uA"]
[null,"TMR Fault Threshold",{"$f":"SpecSheet!G25","v":2.028},{"$f":"SpecSheet!H25","v":2.048},{"$f":"SpecSheet!I25","v":2.0680000000000001},"V"]
[null,"TMR Cap Populated",null,47,null,"nF"]
[null,"TMR Cap Tolerance",null,5,null,"%"]
[null,"Timer will trip after",{"$f":"D180*C179/E178","v":0.44960377358490566},{"$f":"D180*D179/D178","v":0.47651485148514849},{"$f":"D180*E179/C178","v":0.50622916666666662},"ms"]
[]
[null,{"$f":"IF(AND((D168>D171),(D173>C182)),\"Device is starting up in Current Limit and Timer is going to expire before output cap is charged up which will not turn on the circuit properly. \",\"\")","v":""}]
[null,{"$f":"_xlfn.CONCAT(\"DURING STARTUP (Trickle Channel):Please check the SOA of the MOSFET to check if selected MOSFET can handle \",ABS(C9),\"V and \",ROUND(D168,3),\"A for \",INT(D173),\"ms. Otherwise, try to change the RAMP cap and/or the MOSFET.\")","v":"DURING STARTUP (Trickle Channel):Please check the SOA of the MOSFET to check if selected MOSFET can handle 70V and 0.527A for 252ms. Otherwise, try to change the RAMP cap and/or the MOSFET."}]
[null,{"$f":"_xlfn.CONCAT(\"DURING OUTPUT SHORT (Trickle Channel):  Please check the SOA of the MOSFET to check if selected MOSFET in Trickle Channel can handle \",ABS(C9),\"V and \",ROUND(E176,3),\"A for \",ROUND(E182,3),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING OUTPUT SHORT (Trickle Channel):  Please check the SOA of the MOSFET to check if selected MOSFET in Trickle Channel can handle 70V and 0.773A for 0.506ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,{"$f":"_xlfn.CONCAT(\"DURING OUTPUT SHORT (bypass Channel):  Please check the SOA of the MOSFET to check if selected MOSFET in Bypass Channel can handle \",ABS(C9),\"V and \",ROUND(E177,3),\"A for \",ROUND(E182,3),\"ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET.\")","v":"DURING OUTPUT SHORT (bypass Channel):  Please check the SOA of the MOSFET to check if selected MOSFET in Bypass Channel can handle 70V and 13.909A for 0.506ms. Otherwise, try to change the current limit and/or foldback ratio or the MOSFET."}]
[null,"Simulate the circuit in LTspice. Use SOAtherm simulation using LTspice to check SOA. "]
[]
[]
[]
[]
[null,"Bill Of Meterials"]
[null,"Component","Value","Units","Quantity","Other Specs"]
[null,"Rs1",{"$f":"C71","v":4},{"$f":"D71","v":"mΩ"},{"$f":"C73","v":1.0666666666666667},{"$f":"_xlfn.CONCAT(Q38,\"%\",\", \",C64,D64)","v":"1%, 0.25W"}]
[null,"Rs2",{"$f":"C34","v":2},{"$f":"D34","v":"mΩ"},{"$f":"C36","v":9},{"$f":"_xlfn.CONCAT(Q38,\"%\",\", \",C28,D28)","v":"1%, 0.25W"}]
[null,"CTMR",{"$f":"IF(C127=\"dv/dt Mode\",D180,D144)","v":47},{"$f":"IF(C127=\"dv/dt Mode\",F180,F144)","v":"nF"},1,{"$f":"IF(C127=\"dv/dt Mode\",_xlfn.CONCAT(D181,F181,\", \",\"25V\"),_xlfn.CONCAT(D145,F145,\", \",\"25V\"))","v":"5%, 25V"}]
[null,"CRAMP",{"$f":"IF(C127=\"dv/dt Mode\",D165,\"Do not Install\")","v":370},{"$f":"IF(C127=\"dv/dt Mode\",F165,\"\")","v":"nF"},1,{"$f":"IF(C127=\"dv/dt Mode\",_xlfn.CONCAT(D166,F166,\", \",\"25V\"),\"\")","v":"5%, 25V"}]
[null,"RA1",{"$f":"D88","v":15},{"$f":"F88","v":"Ω"},2,"1%, 0.25W"]
[null,"RA2",{"$f":"D90","v":1},{"$f":"F90","v":"Ω"},2,"1%, 0.25W"]
[null,"MOSFET (M1)",{"$f":"C104","v":"PSMN4R8-100BSE"},null,{"$f":"C109","v":1}]
[null,"MOSFET (M2)",{"$f":"C94","v":"IPT020N10N3"},null,{"$f":"C99","v":3}]

{"sheet":"SpecSheet","index":5,"n_rows":35,"n_cols":10,"rows_kept":35,"cut":false,"hidden":false,"merged":[[8,3,8,5],[7,3,7,5],[6,1,6,9],[18,2,21,2],[18,3,21,4],[17,1,23,1],[22,3,22,5],[26,3,26,5],[24,3,24,5],[9,3,9,5],[16,3,16,9],[25,3,25,5]]}
[]
[null,"Topology","LTC4283"]
[null,null,"LTC4284 Parallel Topology"]
[null,null,"LTC4284 High Stress Staged Start Topology"]
[null,null,"LTC4284 Low Stress Staged Start Topology"]
[]
[null,"Datasheet"]
[null,"Symbol","Parameter","Conditions",null,null,"Min","Typ","Max","Units"]
[null,"Vin","Shunt Regulated Voltage at Vin","Iin +Ivz = 4mA",null,null,10.8,11.5,12,"V"]
[null,"Iin","Vin Supply Current","Vin = 10.5V",null,null,null,2.5,4,"mA"]
[null,"UVH","Undervoltage Rising Threshold",null,null,null,2.028,2.048,2.0680000000000001,"V"]
[null,"UVL","Undervoltage Falling Threshold",null,null,null,1.8149999999999999,1.833,1.851,"V"]
[null,"OVH","Overvoltage Rising Threshold",null,null,null,1.3919999999999999,1.4059999999999999,1.42,"V"]
[null,"OV(HYS)","OV Hysteresis",null,null,null,0.01,2.4E-2,3.7999999999999999E-2,"V"]
[null,"Vref","Reference Output Voltage",null,null,null,1.01,1.024,1.038,"V"]
[null,"VOUTL","Vout Low Threshold at VOUTH=0.8V",null,null,null,0.74,0.8,0.86,"V"]
[null,"ITMR(UP)","TMR Pull Up Current In Current Limit"]
[null,null,"Onset","DRNS = 0V, TMR = 1V",null,null,-1.6,-2,-2.5,"uA"]
[null,null,"Startup in Foldback","dv/dt control diabled, DRNS = 1.8V, TMR = 1V",null,"FB = 00b",-192,-202,-212,"uA"]
[null,null,null,null,null,"FB = 01b",-96,-102,-108,"uA"]
[null,null,null,null,null,"FB = 10b",-39,-42,-45,"uA"]
[null,null,null,null,null,"FB = 11b",-20,-22,-24,"uA"]
[null,null,"Startup in dv/dt","dV/dt Control Enabled, DRNS = 1.8V, TMR = 1V",null,null,-192,-202,-212,"uA"]
[null,null,"Hard Short in Normal operation","DRNS = 1.8V, TMR = 1V",null,null,-192,-202,-212,"uA"]
[null,"VTHMR(TH)","TMR Fault Threshold","TMR Rising",null,null,2.028,2.048,2.0680000000000001,"V"]
[null,"Iramp","RAMP Output Current","Startup Only, dV/dt Control Enabled",null,null,-2.25,-2.5,-2.75,"uA"]
[null,"INTVcc","Internal 5V LDO Voltage","Iloaad = 1mA to 30mA, Iin +Ivz = 35mA",null,null,4.75,5.05,5.0350000000000001,"V"]
[]
[]
[]
[null,"Start Up Modes","dv/dt Mode"]
[null,null,"Current Limit Mode"]
[]
[null,"RTNS DRNS resistor Divider Connected to","Vref"]
[null,null,"INTVcc"]

{"sheet":"Register Map","index":6,"n_rows":84,"n_cols":7,"rows_kept":84,"cut":false,"hidden":false,"merged":[[3,1,3,6],[14,1,14,6],[4,3,4,5],[5,3,5,5],[6,3,6,5],[7,3,7,5],[8,3,8,5],[9,3,9,5],[17,2,22,2],[17,1,22,1],[10,3,10,5],[11,3,11,5],[12,3,12,5],[15,3,15,5],[16,3,16,5],[17,3,17,5],[51,2,56,2],[51,1,56,1],[51,6,56,6],[33,3,33,5],[23,3,23,5],[29,3,29,5],[30,3,30,5],[32,1,32,6],[23,2,28,2],[23,1,28,1],[83,3,83,5],[67,1,72,1],[67,2,72,2],[67,3,67,5],[67,6,72,6],[73,3,73,5],[1,3,1,5],[0,1,0,6],[73,1,82,1],[73,2,82,2],[73,6,82,6],[57,3,57,5],[58,3,58,5],[60,1,60,6],[61,1,66,1],[61,2,66,2],[61,3,61,5],[61,6,66,6],[33,2,50,2],[33,1,50,1],[33,6,50,6],[51,3,51,5]]}
[null,"REGISTER MAP"]
[null,"BIT","NAME","OPERATION",null,null,"DEFAULT"]
[]
[null,"Control_1 (0x0A)"]
[]
[null,7,"ON","Turns MOSFET on and off; 1 = turn MOSFET on, 0 = turn MOSFET off",null,null,1]
[null,6,"DVDT","Enables dV/dt inrush control during startup; 1 = enabled, 0 =disabled",null,null,1]
[null,5,"THERM_TMR","Turns 2uA TMR pull down off; 1 = TMR pull-down turned off, 0 =TMR pull-down turned on",null,null,0]
[null,4,"FET_BAD_TURN_OFF","Turns MOSFET off following a FET_BAD_FAULT; 1 = turn MOSFET off, 0 = keep MOSFET on",null,null,1]
[null,3,"PWRGD_RESET_CNTRL","Configures power good reset; 1 = reset by Vout low, 0 = reset by MOSFET off",null,null,1]
[null,2,"PGIO2_ACLB","Configures PGIO2; 1 = PGIO2 as inverted output for active current limit engagement after start up; 0 = normal PGIO2 function configured by 0x10 bit[3:2]",null,null,0]
[null,1,"MASS_WRITE_ENABLE","Enables mass write to all LTC4284S on the I2C bus; 1 = enabled, 0 = disabled",null,null,1]
[null,0,"PAGE_READ_WRITE_ENABLE","Enables I2C page read/write protocols; 1 = enabled, 0 = disabled",null,null,1]
[]
[null,"Control_2 (0x0B)"]
[null,7,"EXT_FAULT_RETRY","Enables auto-retry following an EXT_FAULT; 1 = unlimited retries, 0 = no retry (latch-off)",null,null,0]
[null,6,"PGI_RETRY","Enables auto-retry following an PGI_FAULT; 1 = unlimited retries, 0 = no retry (latch-off)",null,null,0]
[null,"5:4","FET_BAD_RETRY","Configures auto-retry following a FET_BAD_FAULT and MOSFET turn off",null,null,"00"]
[null,null,null,"FET_BAD_RETRY [5:4]","Number of Retries"]
[null,null,null,"00","0 (Latch-Off)"]
[null,null,null,"01",1]
[null,null,null,"10",7]
[null,null,null,"11","Unlimited"]
[null,"3:2","OC_RETRY","Configures auto-retry following a OC_FAULT",null,null,"00"]
[null,null,null,"OC_RETRY [5:4]","Number of Retries"]
[null,null,null,"00","0 (Latch-Off)"]
[null,null,null,"01",1]
[null,null,null,"10",7]
[null,null,null,"11","Unlimited"]
[null,1,"UV_RETRY","Enables auto-retry following a UV_Fault; 1 = unlimited retries, 0 = no retry (latch-off)",null,null,1]
[null,0,"OV_RETRY","Enables auto-retry following a OV_Fault; 1 = unlimited retries, 0 = no retry (latch-off)",null,null,1]
[]
[null,"Control_1 (0x0D)"]
[null,"7:4","ILIM","Configures VILIM and VILIM(FAST)",null,null,"0000"]
[null,null,null,"ILIM 7:4","VILIM (V)","VILIM (FAST) (mV)"]
[null,null,null,"0000",1.4999999999999999E-2,30]
[null,null,null,"0001",1.6E-2,32]
[null,null,null,"0010",1.7000000000000001E-2,34]
[null,null,null,"0011",1.7999999999999999E-2,36]
[null,null,null,"0100",1.9E-2,38]
[null,null,null,"0101",0.02,40]
[null,null,null,"0110",2.1000000000000001E-2,42]
[null,null,null,"0111",2.1999999999999999E-2,44]
[null,null,null,"1000",2.3E-2,46]
[null,null,null,"1001",2.4E-2,48]
[null,null,null,"1010",2.5000000000000001E-2,50]
[null,null,null,"1011",2.5999999999999999E-2,52]
[null,null,null,"1100",2.7E-2,54]
[null,null,null,1101,2.8000000000000001E-2,56]
[null,null,null,1110,2.9000000000000001E-2,58]
[null,null,null,1111,0.03,60]
[null,"3:2","FB","Configures current limit foldback factor for startup and normal operation",null,null,11]
[null,null,null,"FB 3:2","Foldback Factor, α (% VILIM)"]
[null,null,null,"00","100 ","(foldback disabled)"]
[null,null,null,"01","50"]
[null,null,null,"10","20"]
[null,null,null,"11","10"]
[null,"1","FB_DIS","Disables foldback after startup; 1 = disabled, 0 = enabled. Foldaback during startup is not affected",null,null,"0"]
[null,"0","LPFB","Enables load power foldback after startup; 1 = enabled, 0 = disabled",null,null,"0"]
[]
[null,"Control_2 (0x0E)"]
[null,"7:6","VDTH","Configures DRAIN voltage threshold for starting FET bad fault filtering timer, VD,FET(TH)",null,null,11]
[null,null,null,"VDTH7:6","VD,FET(TH) (V)"]
[null,null,null,"00","0.072"]
[null,null,null,"01","0.102"]
[null,null,null,"10","0.143"]
[null,null,null,"11","0.203"]
[null,"5:4","FTBD_DL","Configures FET_Bad fault filtering timer delay, tDL(FETBAD)",null,null,"00"]
[null,null,null,"FTBD_DL 5:4","tDL(FETBAD) (s)"]
[null,null,null,"00","0.256"]
[null,null,null,"01","0.512"]
[null,null,null,"10","1.02"]
[null,null,null,"11","2.05"]
[null,"3:1","COOLING_DL","Configures cooling delay preceding each auto retry folowing OC_FAULT, FET_BAD_FAULT ot EXT_FAULT, tDL(RTRY)",null,null,"000"]
[null,null,null,"COOLING_DL 3:1","tDL(RTRY) (s)"]
[null,null,null,"000",".512"]
[null,null,null,"001","1.02"]
[null,null,null,"010","2.05"]
[null,null,null,"011","4.10"]
[null,null,null,"100",8.19]
[null,null,null,"101","16.4"]
[null,null,null,"110","32.8"]
[null,null,null,"111","65.5"]
[null,0,"PORB","Resest to 0 upon power on reset. Write this bit to 1 to use it as power-on reset indicator; 1 =  power -on reset has not occurred, 0 = power-on reset occurred",null,null,0]