Version 4 SHEET 1 3120 1720 WIRE -288 -336 -384 -336 WIRE -208 -336 -288 -336 WIRE 288 -336 -208 -336 WIRE -384 -320 -384 -336 WIRE -208 -288 -208 -336 WIRE -16 -288 -16 -304 WIRE 80 -288 80 -304 WIRE 176 -288 176 -304 WIRE -384 -224 -384 -240 WIRE -288 -224 -288 -336 WIRE -272 -224 -288 -224 WIRE 288 -224 288 -336 WIRE 288 -224 240 -224 WIRE -496 -32 -992 -32 WIRE -384 -32 -496 -32 WIRE -288 -32 -384 -32 WIRE -272 -32 -288 -32 WIRE 256 -32 240 -32 WIRE 304 -32 256 -32 WIRE 416 -32 304 -32 WIRE 544 -32 416 -32 WIRE -992 -16 -992 -32 WIRE -496 -16 -496 -32 WIRE -384 -16 -384 -32 WIRE 304 -16 304 -32 WIRE 416 -16 416 -32 WIRE 544 -16 544 -32 WIRE -288 64 -288 -32 WIRE -272 64 -288 64 WIRE 256 64 256 -32 WIRE 256 64 240 64 WIRE -992 80 -992 64 WIRE -496 80 -496 48 WIRE -384 80 -384 48 WIRE 304 80 304 48 WIRE 416 80 416 48 WIRE 544 80 544 64 WIRE -272 160 -288 160 WIRE 256 160 240 160 WIRE -368 256 -384 256 WIRE -272 256 -304 256 WIRE 272 256 240 256 WIRE 352 256 336 256 WIRE -368 352 -384 352 WIRE -272 352 -304 352 WIRE 272 352 240 352 WIRE 352 352 336 352 WIRE -368 448 -384 448 WIRE -272 448 -288 448 WIRE 256 448 240 448 WIRE 352 448 336 448 WIRE -368 544 -384 544 WIRE -272 544 -288 544 WIRE 256 544 240 544 WIRE 352 544 336 544 WIRE -368 640 -384 640 WIRE -272 640 -288 640 WIRE -208 816 -208 800 WIRE 80 816 80 800 WIRE 176 816 176 800 WIRE -208 912 -208 896 WIRE -16 912 -16 800 WIRE -16 912 -208 912 WIRE 80 912 80 896 WIRE 80 912 -16 912 WIRE 176 912 176 896 WIRE 176 912 80 912 FLAG -16 -304 0 FLAG 304 80 0 FLAG 544 80 0 FLAG 544 -32 OUT1 FLAG -384 -336 IN FLAG -384 -224 0 FLAG -384 80 0 FLAG -992 80 0 FLAG -992 -32 OUT2 FLAG -288 160 0 FLAG 256 160 0 FLAG -384 256 0 FLAG -384 352 0 FLAG 352 256 0 FLAG 352 352 0 FLAG 416 80 0 FLAG -496 80 0 FLAG 352 544 0 FLAG -384 544 0 FLAG -384 640 0 FLAG -384 448 0 FLAG 352 448 0 FLAG 80 -304 0 FLAG 176 -304 0 SYMBOL voltage -384 -336 R0 WINDOW 123 24 138 Left 2 WINDOW 39 24 117 Left 2 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL polcap 288 -16 R0 WINDOW 123 25 58 Left 2 WINDOW 3 36 33 Left 2 SYMATTR Value2 x2 SYMATTR Value 470µ SYMATTR InstName C5 SYMATTR SpiceLine Rser=10m SYMATTR Description Capacitor SYMATTR Type cap SYMBOL polcap -400 -16 R0 WINDOW 123 29 59 Left 2 WINDOW 3 39 34 Left 2 SYMATTR Value2 x2 SYMATTR Value 470µ SYMATTR InstName C9 SYMATTR SpiceLine Rser=10m SYMATTR Description Capacitor SYMATTR Type cap SYMBOL cap -368 240 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C12 SYMATTR Value 150p SYMBOL cap -368 336 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C13 SYMATTR Value 4700p SYMBOL cap 336 240 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C14 SYMATTR Value 150p SYMBOL cap 336 336 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C15 SYMATTR Value 4700p SYMBOL res 160 800 R0 WINDOW 3 36 79 Left 2 SYMATTR Value 10K SYMATTR InstName R14 SYMBOL res -224 800 R0 SYMATTR InstName R15 SYMATTR Value 10K SYMBOL res 64 800 R0 WINDOW 3 31 78 Left 2 SYMATTR Value 4.99K SYMATTR InstName R16 SYMBOL cap 400 -16 R0 WINDOW 123 26 58 Left 2 WINDOW 3 37 33 Left 2 SYMATTR Value2 x3 SYMATTR Value 100µ SYMATTR InstName C1 SYMATTR SpiceLine Rser=1m SYMBOL cap -512 -16 R0 WINDOW 123 28 61 Left 2 WINDOW 3 37 33 Left 2 SYMATTR Value2 x3 SYMATTR Value 100µ SYMATTR InstName C2 SYMATTR SpiceLine Rser=1m SYMBOL res -272 528 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 32.4K SYMBOL res -272 432 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 5.23K SYMBOL res 240 560 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R5 SYMATTR Value 32.4K SYMBOL res 240 464 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R6 SYMATTR Value 1.65K SYMBOL current 544 -16 R0 WINDOW 123 24 122 Left 2 SYMATTR SpiceLine load SYMATTR InstName I1 SYMATTR Value PULSE(12.5 17.75 1.6m 1u 1u .2m) SYMBOL current -992 -16 R0 WINDOW 123 24 122 Left 2 SYMATTR SpiceLine load SYMATTR InstName I2 SYMATTR Value PULSE(12.5 17.75 1.6m 1u 1u .2m) SYMBOL res -272 624 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 6.34K SYMBOL PowerProducts\\LTM4678 -16 256 R0 WINDOW 39 -32 689 Center 2 WINDOW 40 -32 717 Center 2 SYMATTR InstName U1 TEXT 472 816 Right 2 !.tran 2m startup TEXT 488 128 Left 1 ;Please read the following notes carefully, since the model presents different user interface\nthan the real part does.\n \n(1) All PMBus communication and memory address related functions and pins are not modeled. \n \n(2) Changes to all parameter values during the simulation running will not be in effect, unless the\nsimulation is stopped and restarted. This is different from the operation of the part, which will\n respond to the commanded changes while running. \n \n(3) Share_clk is not modeled. The default time reference of LTspice is used as the common time \nbase for all time related parameters.\n \n(4) The following parameters can be defined, by right-clicking the symbol of LTC3880. Different \nnomenclature from the datasheet is adopted here. If any value of these parameters are set beyond \nthe scope discribed in the datasheet, the resulting simulation outcomes are not meaningful.\n \n VIN_ON & VIN_OFF -- in volts, set the unit start/stop input voltages;\n Freq -- in Hz, sets switching frequency as one of values of 250K, 350K, \n 425K, 500K, 575K, 650K, 750K, 1000K. FREQ_CFG pin needs to float \n (or short to VDD25), to make the value be in effect;\n PHs_0 & PHs_1 -- in degree, set phase angle related to SYNC signal. \n Certain combinations are restricted as in datasheet. FREQ_CFG \n pin needs to float (or short to VDD25), to make the value be in effect;\n Ton0_delay & Ton0_rise; Ton1_delay & Ton1_rise -- in sec, set delay and soft-start timers for \n channel0 and channel1. Initialization time is not modeled;\n Toff0_delay & Toff0_fall; Toff1_delay & Toff1_fall -- in sec, set delay and soft-off timers for \n channel0 and channel1;\n Vout_0 & Vout_1 -- in volt, set output voltages respectively;\n Vout0_range & Vout1_range -- set maximum output range, \n value 0 for 3.6V \n value 1 for 2.75V\n Ilim0_range & Ilim1_range -- set maximum sensed peak current range, with value 0\n for low (45.14mV), and 1 for high (81.25mV);\n OC_limit0 & OC_limit1 -- set ratio of peak current limit to the maximum value defined\n by Ilimit_range. It must be one of values: 0.5, 0.572, 0.642, \n 0.714, 0.786, 0.858, 0.928, 1;\n Mode_II -- sets light load operation mode: 0 for discontinuous, 1 for forced continuous;\n Fault_response -- sets the response mode of the unit to occuring faults:\n 0 for ignore, 1 for latch up, 2 for Hiccup after Retry_delay time;\n Retry_delay -- in sec, sets the timer before the unit turns on after a fault;\n gm -- transconductance of the error amplifier. It must be between 1m mho and 5.73m mho;\n Rth -- Compensation resistor. It must be set between 0k ohms and 62k ohms; TEXT -8 -360 Bottom 2 ;LTM4678 - Dual 25A or Single 50A µModule Regulator with Digital Power System Management\nDual-Output, High Efficiency, High Density Regulator with I2C/SMBus/PMBus Serial Interface\nInput: 4.5V to 16V Output: 1V @ 25A, 1.8V @ 25A TEXT -592 1016 Left 2 ;Notes:\n If the simulation model is not found please update with the "Sync Release" command from the "Tools" menu.\n It remains the customer's responsibility to verify proper and reliable operation in the actual application.\n Component substitution and printed circuit board layout may significantly affect circuit performance or reliability.\n Contact your local sales representative for assistance. This circuit is distributed to customers only for use with LTC parts.\n Copyright © 2019 Analog Devices Inc. All rights reserved.