1/8 Brick Isolated DC/DC Telecom Power Module Reference Design


Design files


PMP8878 is a full-function 1/8th brick isolated DC/DC telecom power module based on UCC28250 advanced PWM controller. The reference design features secondary side control and hard switching full bridge power topology to deliver 12V/180W of output power operating across a wide range 40V-75V input source. The highlights of the reference design include 95% peak efficiency, pre-bias start-up, overtemperature protection and overcurrent protection (hiccup mode). The bias supply block employs the UCC25230, while the gate drivers used in this design include UCC27324 for driving the SR MOSFETs and UCC27201 for driving the primary side Half-Bridge MOSFETs.

  •  40-75V input, 12V/15A output 
  • 1/8th brick telecom DC/DC isolated power module
  • Featuring Hard Switching Full Bridge power topology 
  • Secondary side control supporting start-up under pre-bias
  • Overcurrent protection
  • Overtemperature protection

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDU053.PDF (1017 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDR019.PDF (145 K)

Detailed schematic diagram for design layout and components

TIDR020.PDF (114 K)

Complete listing of design components, reference designators, and manufacturers/part numbers


Includes TI products in the design and potential alternatives.

Half-bridge drivers

UCC272013-A, 120-V half bridge gate driver with 8-V UVLO and TTL inputs

Data sheet document-pdfAcrobat PDF open-in-new HTML
Isolated DC/DC converters & modules

UCC2523012V to 105V Input, 0.2A Output Switching Converter

Data sheet document-pdfAcrobat PDF
Low-side drivers

UCC27324Non-inverting 4-A/4-A dual-channel low side gate driver

Data sheet document-pdfAcrobat PDF open-in-new HTML
PWM controllers

UCC28250Advanced half-bridge/full-bridge PWM controller with pre-bias operation

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
Test report PMP8878 Test Results Aug. 20, 2013

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