Product details

Iout (Max) (A) 120 Vin (Min) (V) 8 Vin (Max) (V) 14 Vout (Min) (V) 0.25 Vout (Max) (V) 1.52 Soft start Adjustable Features Adjustable Current Limit, Current Sharing, Dynamic Voltage Scaling, EMI Tested, Enable, Light Load Efficiency, PMBus, Phase Interleaving, Power Good, Remote Sense, Voltage Margining Operating temperature range (C) -40 to 105 Iq (Typ) (uA) 8000 Regulated outputs (#) 2 Switching frequency (Max) (kHz) 700 Switching frequency (Min) (kHz) 350 Duty cycle (Max) (%) 25 Topology Buck, Synchronous Buck
Iout (Max) (A) 120 Vin (Min) (V) 8 Vin (Max) (V) 14 Vout (Min) (V) 0.25 Vout (Max) (V) 1.52 Soft start Adjustable Features Adjustable Current Limit, Current Sharing, Dynamic Voltage Scaling, EMI Tested, Enable, Light Load Efficiency, PMBus, Phase Interleaving, Power Good, Remote Sense, Voltage Margining Operating temperature range (C) -40 to 105 Iq (Typ) (uA) 8000 Regulated outputs (#) 2 Switching frequency (Max) (kHz) 700 Switching frequency (Min) (kHz) 350 Duty cycle (Max) (%) 25 Topology Buck, Synchronous Buck
  • Input voltage range: 8 V to 14 V
  • Dual output: 120 A (3-phase) + 40 A (1-phase)
  • Output voltage range: 0.25 V to 1.52 V
    • Programmable in 5-mV steps
    • Differential remote sense
    • ±0.5% Vref accuracy with remote sense
  • PMBus Interface
    • Programmable VOUT, UVLO, fault limits
    • VIN, VOUT, IOUT, temperature telemetry
    • Supports up to 1-MHz bus speed
    • On-chip non-volatile configuration memory
  • Ultra-fast transient response
  • Switching frequency range: 350 kHz to 700 kHz
  • 15-mm × 48-mm footprint and 12-mm height
  • Efficiencies up to 95%
  • Dual power good outputs
  • Overcurrent, overvoltage, overtemperature protection
  • Operating IC junction range: –40°C to 125°C
  • Operating ambient range: –40°C to 105°C
  • Input voltage range: 8 V to 14 V
  • Dual output: 120 A (3-phase) + 40 A (1-phase)
  • Output voltage range: 0.25 V to 1.52 V
    • Programmable in 5-mV steps
    • Differential remote sense
    • ±0.5% Vref accuracy with remote sense
  • PMBus Interface
    • Programmable VOUT, UVLO, fault limits
    • VIN, VOUT, IOUT, temperature telemetry
    • Supports up to 1-MHz bus speed
    • On-chip non-volatile configuration memory
  • Ultra-fast transient response
  • Switching frequency range: 350 kHz to 700 kHz
  • 15-mm × 48-mm footprint and 12-mm height
  • Efficiencies up to 95%
  • Dual power good outputs
  • Overcurrent, overvoltage, overtemperature protection
  • Operating IC junction range: –40°C to 125°C
  • Operating ambient range: –40°C to 105°C

The TPSM831D31 is a PMBus™-controlled, dual-output, 4-phase power module that combines a high-performance D-CAP+™ controller with four high-efficiency Smart Power Stages, and low-loss inductors, into a rugged, thermally enhanced surface-mount package. The user supplies the input and output capacitors and a few passive components to complete the system. The first output is a 3-phase power stage that can deliver up to 120 A of continuous output current. The second output is a single phase power stage that can deliver up to 40 A of output current.

The PMBus interface provides for converter configuration of each VOUT, UVLO, soft-start, overcurrent, and thermal shutdown parameters. The interface provides support for telemetry that can report the actual input voltage, output voltage, output current, and device temperature. The device can report input and output power. The device supports standard PMBus warning and fault functions. The device supports PMBus communication speeds up to 1 MHz, with 1.8-V or 3.3-V logic levels, as detailed in Section 4.3 of SMBus Specification V3.0. The module supports a subset of the commands in the PMBus 1.3 specification.

The TPSM831D31 is a PMBus™-controlled, dual-output, 4-phase power module that combines a high-performance D-CAP+™ controller with four high-efficiency Smart Power Stages, and low-loss inductors, into a rugged, thermally enhanced surface-mount package. The user supplies the input and output capacitors and a few passive components to complete the system. The first output is a 3-phase power stage that can deliver up to 120 A of continuous output current. The second output is a single phase power stage that can deliver up to 40 A of output current.

The PMBus interface provides for converter configuration of each VOUT, UVLO, soft-start, overcurrent, and thermal shutdown parameters. The interface provides support for telemetry that can report the actual input voltage, output voltage, output current, and device temperature. The device can report input and output power. The device supports standard PMBus warning and fault functions. The device supports PMBus communication speeds up to 1 MHz, with 1.8-V or 3.3-V logic levels, as detailed in Section 4.3 of SMBus Specification V3.0. The module supports a subset of the commands in the PMBus 1.3 specification.

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Technical documentation

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Type Title Date
* Data sheet TPSM831D31 8-V to 14-V Input, 0.25-V to 1.52-V Dual Output, 120-A + 40-A PMBus™ Power Module datasheet (Rev. A) 14 Jun 2021
White paper Power solution options for data center applications (Rev. A) 27 Feb 2020
Technical article Sequencing and powering FPGAs in radar and other defense applications 18 Nov 2019
Technical article Minimize the impact of the MLCC shortage using D-CAP+™ control mode 05 Apr 2019
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
Technical article Searching for the newest innovations in power? Find them at APEC 09 Feb 2019

Design & development

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Evaluation board

TPSM831D31EVM — TPSM831D31, 8V to 14V Input, Dual Output, 120A + 40A PMBus Power Module Evaluation Module

The TPSM831D31 evaluation board is configured to evaluate the operation of the TPSM831D31 power module for current up to 120 A for output A and 40 A for output B. The input voltage range is 8 V to 14 V. The output voltage range for both output A and output B is 0.25 V to 1.52 V. The evaluation board (...)
Interface adapter

USB-TO-GPIO — USB Interface Adapter EVM

This EVM serves as an interface adapter or a bridge between a host PC (IBM™ compatible) and one or multiple slave devices via a standard type-A to mini-B USB cable. The communication between the USB interface adapter and the host PC is via USB, while the communication between the USB interface (...)

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Application software & framework

FUSION_DIGITAL_POWER_DESIGNER — Digital Power Software

Fusion Digital Power™  is the Graphical User Interface (GUI) used to configure and monitor select Texas Instruments digital power controllers and sequencer/health monitors. The application uses the PMBus protocol to communicate with the device over serial bus by way of a TI USB adapter.
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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