1 Features

• Integrated extended security feature

• 4.25V to 16V with PVIN tied to AVIN with internal

LDO

• 2.95V to 16V with PVIN and AVIN split rail, or with

external bias on VDD5

• Integrated MOSFETs, inductors, and basic

passives

• Average current mode control with selectable

internal compensation

• 0.5V to 5.5V output voltage range from through

pinstrap

• 0.25V to 5.5V PMBus® VOUT_COMMAND range

• Extensive PMBus command set with telemetry for

VOUT, IOUT, and die temperature

• Differential remote sensing with an internal FB

divider for < 1% VOUT error

• –40°C to +125°C TJ

• AVS and margining capabilities through PMBus

• Multi function select (MSEL) pins for pinstrap

programming PMBus defaults

• Nine selectable switching frequencies from

275kHz to 1.1MHz

• Frequency sync in, sync out

• Supports prebiased output

• 16mm × 11mm × 4.3mm, 45-pin MOY package

• Create a custom design using the TPSM8S6B24S

with the WEBENCH® Power Designer

2 Applications

• Data center switches, rack servers

• Active antenna system, remote radio, and

baseband unit

• Automated test equipment, CT, PET, and MRI

• ASIC, SoC, FPGA, DSP core, and I/O voltage

3 Description

TPSM8S6B24S is a highly integrated, easy-to-use,

non-isolated DC/DC buck power module with

added manufacturer-specific PMBus commands.

The addition of EXTENDED_WRITE_PROTECT and

PASSKEY improves security against malicious access

to the PMBus by restricting Write capability with

greater resolution than the standard Write Protect

command.

TPSM8S6B24S is a 25A power module and can

source up to 100A with 4 × stackability. The device

has an option to overdrive the internal 5V LDO with

an external 5V supply to enable lower input voltage

range down to 2.95V and improve the efficiency of the

converter.

TPSM8S6B24S 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 to

provide 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. Backchannel

communication between stacked devices

enables all TPSM8S6B24S converters, powering a

single output rail to share a single address to simplify

system software, firmware design. Key parameters

including output voltage, switching frequency, softstart

time, and overcurrent fault limits can also be

configured through BOM selection without PMBus

communication to support program free power up.