UCD3138 Hard Switching Full Bridge Converter Evaluation Module
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The Texas Instruments UCD3138HSFBEVM-029 evaluation module (EVM) is a digitally controlled hard switching full bridge converter based on the UCD3138RHA programmable digital power controller. The EVM is a standalone Symmetrical Hard Switching Full-Bridge (HSFB) DC-DC power converter designed for 48V-in systems. The UCD3138HSFBEVM-029 accepts a DC input from 36 to 72Vdc, and outputs a nominal 12Vdc with full output load power 360W, or full output current 30A. The protection features include over-voltage, under-voltage, over-current and over-temperature. Features include input voltage feedforward, pre-biased startup and PMBus communication. The UCD3138HSFBEVM-029 also comes with a USB-TO-GPIO Interface Adapter to download firmware and program the UCD3138 digital power controller in the EVM.

  • Digitally controlled and standalone hard switching full-bridge DC-DC power conversion
  • Voltage mode control
  • Secondary side control
  • DC input from 36 to 72Vdc
  • 12Vdc regulated output from no-load to full-load
  • Full-load power 360W, or full-load current 30A
  • High efficiency
  • Constant soft start time
  • Protection: over voltage, under voltage, over current, and over temperature
  • Constant current and constant power
  • Input voltage feed forward control
  • PMBus communications
  • Test points to facilitate device and topology evaluation

What's Included
  • USB Cable
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UCD3138HSFBEVM-029 Evaluation Module


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UCD3138 Hard Switch Full Bridge

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Technical Documents
Application notes (2)
Title Type Size (KB) Date
PDF 7101 24 Jul 2015
PDF 293 24 Jul 2015
User guides (1)
Title Type Size (KB) Date
PDF 6399 08 May 2019
More literature (1)
Title Type Size (KB) Date
PDF 38 02 Jan 2019

Software (1)

Name Part Number Software Type
UCD3138 Hard Switch Full Bridge Firmware  UCD3138FW-HSFB  Application Software & Frameworks 

Design Kits & Evaluation Modules  ( 2 )

Name Part Number Tool Type
UCD3138 Programmable Digital Power Controller Open Loop Evaluation Module (40-pin version)  UCD3138OL40EVM-032  Evaluation Modules & Boards 
USB Interface Adapter EVM  USB-TO-GPIO  Evaluation Modules & Boards 

TI Devices (10)

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UCD3138064  Highly-Integrated Digital Controller for Isolated Power with 64kB Memory  Digital power 
UCD3138064A  Highly Integrated Digital Controller for Isolated Power  Digital power 
UCD3138128  Highly-Integrated Digital Controller for Isolated Power  Digital power 
UCD3138128A  Highly-Integrated Digital Controller For Isolated Power  Digital power 
UCD3138A  UCD3138A Highly Integrated Digital Controller for Isolated Power  Digital power 
UCD3138A64  Highly-Integrated Digital Controller for Isolated Power  Digital power 

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