2.95-V to 16-V input, dual 35-A, PMBus® power module

The TPSM8D6C24 is a

highly integrated, easy-to-use, non-isolated DC/DC buck

power module. The TPSM8D6C24

provides two 35A

independent outputs or a single stacked 2-phase

70A output. Two modules can be stacked for a

4-phase 140A output. The device has an option to overdrive the internal 5V

LDO with an external 5V supply to enable a lower input

voltage range down to 2.95V and improve the efficiency of

the converter.

The TPSM8D6C24 power module uses a proprietary

fixed-frequency current-mode control with input feedforward

and selectable internal compensation components for minimal

size and stability over a wide range of output

capacitances.

The PMBus interface with 1MHz clock support

provides a convenient, standardized digital interface for

converter configuration as well as monitoring of key

parameters including output voltage, output current, and

internal die temperature. Response to fault conditions can

be set to restart, latch off, or ignore, depending on system

requirements. Back-channel communication between stacked

devices enables all TPSM8D6C24

converters, powering a single output rail to share a single

address to simplify system software or firmware design. Key

parameters including output voltage, switching frequency,

soft-start time, and overcurrent fault limits can also be

configured through BOM selection without PMBus communication

to support program free power up.