15-W, wide-input flyback reference design
PMP22144
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Key Document

Description

This reference design uses a UCC28742 flyback controller and an ATL432LI shunt reference to produce an isolated 24-V output capable of 0.625 A from an 85-V to 480-Vac input. All components are placed on one side of the board to reduce complexity and cost. The design can achieve 80% efficiency across various input conditions.

Features
  • Compact size (2" x 3.31") minimizes solution size area
  • Single-side assembly and 2-layer PCB for reduced manufacturing costs
  • Low noise output of less than 100-mV peak-to-peak voltage ripple for sensitive loads

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Schematic/Block Diagram

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Design Guide

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Design Files

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Parametrics
 PMP22144.1
(Output Voltage 1)
Vin (Min) (V)85
Vin (Max) (V)480
Vout (Nom) (V)24
Iout (Max) (A).625
Output Power (W)15
Isolated/Non-IsolatedIsolated
Input TypeAC
TopologyFlyback- Quasi Resonant

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ATL432LI  High-bandwidth, low-IQ programmable shunt regulator (pinout: RKA)  Voltage references  Sample & Buy Not Available
UCC28742  High-Efficiency Flyback controller With Optocoupler Feedback  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)
ATL432LI Download
UCC28742 Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 2543 27 Jan 2020
Design files (6)
Title Type Size (KB) Date
PDF 133 27 Jan 2020
ZIP 952 17 Jan 2020
ZIP 743 17 Jan 2020
PDF 225 17 Jan 2020
PDF 133 17 Jan 2020
PDF 779 17 Jan 2020

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