Single-Output DC-to-DC Converter with PMBus Interface


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The TPS544B25EVM-681 evaluation module (EVM) is designed as a single output DC-DC converter that demonstrates a typical low-voltage application while providing a number of test points to evaluate the performance. It uses a nominal 12-V input bus to produce a regulated 0.95-V output at up to 30-A of load current, depending on the device installed.

If a designer wants to communicate with this EVM from a Windows-based PC, a separate USB Interface Adapter EVM is required. The USB-TO-GPIO Adapter 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 USB-TO-GPIO Adapter is listed below in the related products section.

to 20-A of load current, depending on the device installed.


  • Regulated 0.95-V output up to 30-ADC, steady-state output current
  • Configuarable features via the PMBus interface include Output Voltage, UVLO, Soft Start, Enable, Fault Limits and Programmable Response
  • Convenient Test Points for Probing Critical Waveforms
  • Optional External Temperature Sensor


AC/DC & DC/DC converters (integrated FET)
TPS544B25 4.5-V to 18-V, 20-A synchronous SWIFT™ buck converter with PMBus and frequency sync
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Evaluation board

TPS544B25EVM-681 — Single-Output DC-to-DC Converter with PMBus Interface

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Technical documentation

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Type Title Date
EVM User's guide TPS5442x5 Step-Down Converter Evaluation Module User's Guide (Rev. B) PDF | HTML 26 Aug 2021
Certificate TPS544B25EVM-681 EU Declaration of Conformity (DoC) 02 Jan 2019
Technical article A PMBus™ primer: common PMBus questions answered PDF | HTML 26 Sep 2015

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