Evaluation Module for TPS40400 PMBus Synchronous Buck Controller


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The TPS40400EVM-351 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS40400 PMBus Synchronous Buck Controller in a typical single output application. The EVM is designed to use a regulated 8Vdc to 14Vdc bus to produce a regulated output of 1.2Vdc at a maximum of 20A of load current. The EVM features the CSD16325Q5 and CSD16404Q5A NexFET Power FETs.

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.

  • 8V to 14V input range
  • 1.2V fixed output
  • 20A DC steady state current
  • PMBus enabled analog controller
  • Programmable switching frequency: 200kHz–2MHz
  • Programmable soft-start
  • Programmable over current protection
  • Inductor resistance or series resistance use for current sensing
  • Remote voltage sense amplifier
  • Voltage Mode Feedback Control with Voltage Feedforward
Buck controllers (external switch)
TPS40400 3-V to 20-V, 30-A, synchronous buck controller with PMBus™, including Telemetry
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Evaluation board

TPS40400EVM-351 — Evaluation Module for TPS40400 PMBus Synchronous Buck Controller

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Technical documentation

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Type Title Date
User guide TPS40400 Buck Controller Evaluation Module User's Guide (Rev. A) PDF | HTML 03 Jan 2022
Certificate TPS40400EVM-351 EU Declaration of Conformity (DoC) 02 Jan 2019

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