LTM4645

Demonstration circuit 2616A-A features a polyphase design using the LTM4645EY, a 25A high efficiency, switch mode step-down power µModule regulator. The input voltage range is from 6V to 15V. To use DC2616A-A for input voltage range from 4.7V to 6V, connect INTV_CC to SV_IN (change R22, R42 from OPT to 0Ω), DRV_CC to V_IN (change R21, R38 from 0Ω to OPT, R2, R39 from OPT to 0Ω). The output voltage range is 0.6V to 1.8V. The DC2616A-A can deliver a nominal 50A 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 LTM4645 to synchronize to an external clock signal. The phase shift between the two phases is 180 degrees. DC2616A-A has the option of choosing both internal and external compensation circuit for LTM4645. The LTM4645 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC2616A-A.

Demonstration circuit DC2681A-A features the LTM4645EY, a 25A high efficiency, switch mode stepdown power µModule^® regulator. The input voltage range is from 6V to 15V. To use DC2681A-A for input voltage range from 4.7V to 6V, connect INTV_CC to SV_IN (change R22 from OPT to 0Ω), DRV_CC to V_IN (change R21 from 0Ω to OPT, R28 from OPT to 0Ω). The output voltage range is 0.6V to 1.8V. Derating is necessary for certain VIN, VOUT, frequency and thermal conditions. The DC2681A-A offers the TRK/SS pin allowing the user to program output tracking or soft-start period. 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 L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners. BOARD PHOTO less noise sensitive applications. The MODE_PLLIN pin also allows the LTM4645 to synchronize to an external clock signal (between 400kHz and 800kHz). DC2681A-A has the option of choosing both internal and external compensation circuit for LTM4645. Tying the PHASMD pin to different voltage generates certain phase difference between MODE_PLLIN and CLKOUT. The LTM4645 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC2681A-A.

Demonstration circuit 2616A-C features a polyphase design using the LTM4645EY, a 25A high efficiency, switch mode step-down power µModule regulator. The input voltage range is from 6V to 15V. To use DC2616A-C for input voltage range from 4.7V to 6V, connect INTV_CC to SV_IN (change R22, R42, R55, R68 from OPT to 0Ω), DRV_CC to V_IN (change R21, R38, R52, R65 from 0Ω to OPT, R2, R39, R53, R66 from OPT to 0Ω). The output voltage range is 0.6V to 1.8V. The DC2616A-C can deliver a nominal 100A output current with four LTM4645 modules in parallel. 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 pulseskipping mode for noise sensitive applications or burst mode operation in less noise sensitive applications. The MODE_PLLIN pin also allows the LTM4645 to synchronize to an external clock signal. The phase shift between two adjacent phases is 90 degrees. DC2616A-C has the option of choosing both internal and external compensation circuit for LTM4645. The LTM4645 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC2616A-C.

Demonstration circuit 2616A-B features a polyphase design using the LTM4645EY, a 25A high efficiency, switch mode step-down power µModule regulator. The input voltage range is from 6V to 15V. To use DC2616A-B for input voltage range from 4.7V to 6V, connect INTV_CC to SV_IN (change R22, R42, R55 from OPT to 0Ω), DRV_CC to V_IN (change R21, R38, R52 from 0Ω to OPT, R2, R39, R53 from OPT to 0Ω). The output voltage range is 0.6V to 1.8V. The DC2616A-B can deliver a nominal 75A output current with three LTM4645 modules in parallel. 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 LTM4645 to synchronize to an external clock signal. The phase shift between two adjacent phases is 120 degrees. DC2616A-B has the option of choosing both internal and external compensation circuit for LTM4645. The LTM4645 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC2616A-B.