Universal AC Input, 24V/1A PFC-Flyback Reference Design
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Key Document


This UCC28050-based reference design provides both isolation and power factor correction in a single stage.  The circuit is built on a 76mm by 50mm, two layer board.  The test report documents performance with regards to efficiency, power factor, thermal, EMI, and more.

  • Single-stage reference design provides both power factor correction and regulation
  • Test report includes thermal and conducted EMI performance
  • Over 88% efficiency at full load
  • 75mm by 50mm circuit board on two layers

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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)90
Vin (Max) (V)265
Vout (Nom) (V)24
Iout (Max) (A)1
Output Power (W)24
Input TypeAC
TopologyFlyback- PFC

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
UCC28050  Transition mode PFC controller with 15.6V/9.7V UVLO and IEC61000-3-2 compliance 0°C to 70°C  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)
UCC28050 Download Download
Download Download

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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 4028 24 Oct 2017
Design files (3)
Title Type Size (KB) Date
PDF 80 24 Oct 2017
PDF 101 24 Oct 2017
PDF 136 24 Oct 2017

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