Low Cost, Isolated 3W Flyback Reference Design
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Key Document


The PMP30313 is a low cost isolated flyback reference design.  It supplies 12V @ 0.25A from universal mains. It's primary-side regulated, therefore the voltage loop is closed on the primary side by means of an auxiliary winding. It is also protected against output short circuit.

  • Simple opto-less isolated flyback
  • Suitable for low power applications or bias supply
  • The controller integrates 700V FET and cycle-by-cycle limits the current in the transformer
  • Overload, overcurrent and over-temperature protected

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Schematic/Block Diagram

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Design Guide

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Design Files

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(Output Voltage 1)
Vin (Min) (V)85
Vin (Max) (V)264
Vout (Nom) (V)12
Iout (Max) (A).25
Output Power (W)3
Input TypeAC
TopologyFlyback- Non Sync

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
UCC28880  High voltage switcher for Non-isolated AC/DC Conversion  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
UCC28880 Download Download

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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 1284 30 Nov 2017
Design files (6)
Title Type Size (KB) Date
ZIP 22 30 Nov 2017
ZIP 439 30 Nov 2017
PDF 486 30 Nov 2017
PDF 185 30 Nov 2017
PDF 99 30 Nov 2017
PDF 96 30 Nov 2017

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