LTM4636

Demonstration circuit 2830A features the LTM4636EY, a 40A high efficiency, switch mode step-down µModule^® regulator which is controlled by the LTC7106EDDB, a precision, bidirectional, 7-Bit current DAC with PMBus interface. The LTC7106 is used to adjust the output voltage of the LTM4636 by way of the PMBus. The LTM4636’s input voltage range is from 4.7V to 15V and the output voltage range is from 0.6V to 3.3V. De-rating is necessary for certain VIN, VOUT, frequency and thermal conditions. The LTC7106 requires an input voltage from 2.5V to 5.5V and on DC2830A it’s powered directly from the DC1613A dongle. The LTC7106 provides three ranges of IDAC output current: Nominal Range (–64µA to 63µA), Range High (–256µA to 252µA) and Range Low (–16µA to 15.75µA). The nominal range is optimized with the highest accuracy. It is recommended that users design the resistor divider using the nominal range of the IDAC setting.

To explore the power system management features of the LTC7106, download the GUI software LTpowerPlay^® onto your PC and use ADI’s I²C/SMBus/PMBus Dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on-the-fly, view IDAC current value and fault status.

The LTM4636 and LTC7106 data sheets must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC2830A.

Demonstration circuit 2230A-A features the LTM4636EY, a 40A high efficiency, switch mode step-down power μModule^® regulator. The input voltage range is from 4.7V to 15V. For input voltage range from 4.7V to 5.5V, short PV_CC pin to V_IN pin with R8 = R21 = 0Ω and remove R17. The output voltage range is 0.6V to 3.3V. Derating is necessary for certain V_IN, V_OUT, frequency and thermal conditions. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the MODE_PLLIN jumper selects pulse-skipping mode for noise sensitive applications or Burst Mode^® operation in less noise sensitive applications. The MODE_PLLIN pin also allows the LTM4636 to synchronize to an external clock signal. DC2230A-A has the option of choosing both internal and external compensation circuit for LTM4636. Tying the PHASMD pin to different voltage generates certain phase difference between MODE_PLLIN and CLKOUT. The LTM4636 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC2230A-A.

Demonstration circuit DC2448A-C features a PolyPhase^® design using the LTM4636EY, a 40A high efficiency, switch mode step-down power µModule^® regulator. The input voltage range is from 4.7V to 15V. When V_IN < 5.5V, short PVCC to VIN with R1 = 0Ω, and set R3 = 0Ω and remove R2. The output voltage range is 0.6V to 3.3V. The DC2448A-C can deliver a nominal 160A output current. As explained in the data sheet, output current derating is necessary for certain VIN, VOUT and thermal conditions. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the MODE_PLLIN jumper selects pulse-skipping mode for noise sensitive applications or Burst Mode^® operation in less noise sensitive applications. The MODE_PLLIN pin also allows the LTM4636 to synchronize to an external clock signal. The phases of the four LTM4636s are 0 degree, 90 degree, 180 degree and 270 degree. DC2448A-C has the option of choosing both internal and external compensation circuit for LTM4636. The LTM4636 datasheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC2448A-C.

Demonstration circuit DC2448A-B features a PolyPhase^® design using the LTM4636EY, a 40A high efficiency, switch mode step-down power µModule^® regulator. The input voltage range is from 4.7V to 15V. When V_IN < 5.5V, short PVCC to VIN with R1 = 0Ω, and set R3 = 0Ω and remove R2. The output voltage range is 0.6V to 3.3V. The DC2448A-B can deliver a nominal 120A output current. As explained in the data sheet, output current derating is necessary for certain VIN, VOUT, and thermal conditions. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the MODE_PLLIN jumper selects pulse-skipping mode for noise sensitive applications or Burst Mode^® operation in less noise sensitive applications. The MODE_PLLIN pin also allows the LTM4636 to synchronize to an external clock signal. The phases of the three LTM4636s are 0 degrees, 120 degrees and 240 degrees. DC2448A-B has the option of choosing both internal and external compensation circuit for LTM4636. The LTM4636 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC2448A-B.

Demonstration circuit DC2448A-A features a PolyPhase^® design using the LTM^®4636EY, a 40A high efficiency, switch mode step-down power μModule^® regulator. The input voltage range is from 4.7V to 15V. When V_IN < 5.5V, short PVCC to VIN with R1 = 0Ω, and set R3 = 0Ω and remove R2. The output voltage range is 0.6V to 3.3V. The DC2448A-A can deliver a nominal 80A output current. As explained in the data sheet, output current derating is necessary for certain V_IN, V_OUT, and thermal conditions. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the MODE_PLLIN jumper selects pulse-skipping mode for noise sensitive applications or Burst Mode^® operation in less noise sensitive applications. The MODE_PLLIN pin also allows the LTM4636 to synchronize to an external clock signal. The phase shift between the two phases is 180 degree. DC2448A-A has the option of choosing both internal and external compensation circuit for LTM4636. The LTM4636 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC2448A-A.