8V-14V Input, 120A + 40A Dual Output PMBus module with AVS and Monitoring


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) (mA) 8 Regulated outputs (#) 2 Switching frequency (Max) (kHz) 700 Switching frequency (Min) (kHz) 350 Switching frequency (Typ) (kHz) 400 Duty cycle (Max) (%) 25 Topology Buck, Synchronous Buck open-in-new Find other Buck modules (integrated inductor)


  • 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

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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 configured as 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 computed input and output power can also be reported. Standard PMBus warning and fault functions are also supported. 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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Sample Availability

Prototype samples are available (PTPSM831D31MOA). Sample now

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Technical documentation

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Type Title Date
* Datasheet TPSM831D31 8-V to 14-V Input, 0.25-V to 1.52-V Dual Output, 120-A + 40-A PMBus™ Power Module datasheet Aug. 27, 2018
White papers Power solution options for data center applications (Rev. A) Feb. 27, 2020
Technical articles Sequencing and powering FPGAs in radar and other defense applications Nov. 18, 2019
Technical articles Minimize the impact of the MLCC shortage using D-CAP+™ control mode Apr. 05, 2019
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Technical articles Searching for the newest innovations in power? Find them at APEC Feb. 08, 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide
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 (...)
  • 8 V to 14 V input voltage range
  • Dual outputs; Output A: 120 A, Output B: 40 A
  • Output voltage range; Output A and B: 0.25V to 1.52V
  • 15 mm x 48 mm package
  • PMBus configurable

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 (...)

  • Supports master mode I²C, SMBus or PMBus as well as GPIO.
  • Supports USB1.1 full speed at 12 Mbit/s. The USB interface adapter is recognized by the host as a generic human interface device (HID), so no proprietary USB or HID driver is needed. Therefore, the USB interface adapter can be treated as a (...)

Software development

Digital Power Software
FUSION_DIGITAL_POWER_DESIGNER 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.

Some of the tasks you can perform with the GUI include:

  • Turn on or off the power supply output, either through the hardware control line or the PMBus OPERATION command
  • Monitor real-time data. Items such as input voltage, output voltage, output current, temperature, and warnings/faults are continuously (...)

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