AC in, 5V 3A Quasi-resonant Flyback Converter with Optimized Light Load Efficiency Reference Design

(ACTIVE) PMP4478

Description & Features

Technical Documents

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Key Document

Description

The PMP4478 is an optimized reference design for appliance applications which provides high current.  Low ripple & noise < 50mV is achieved via Pi type filter at the output. The design also achieves good light load efficiency with optimized transformer design. When the load is 300mW, the input power can still be limited to less than 420mW.

Features
  • Optimized design for high light load efficiency (Input power <420mW when load is 300mW)
  • Low Standby Power(<30mW)
  • Low ripple& noise (<50mV)
  • Good Dynamic performance
  • Pass CE/RE Test
  • Full Input & Output Protection

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Schematic/Block Diagram

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Design Guide

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Design Files

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Bill of Materials (BOM)

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Parametrics
 PMP4478.1
(Output Voltage 1)
Vin (Min) (V)90
Vin (Max) (V)264
Vout (Nom) (V)5
Iout (Max) (A)3
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
TL431A  1% Accuracy Adjustable Precision Shunt Regulator  Voltage references  Sample & Buy Not Available
UCC28740  Constant-Voltage, Constant-Current Flyback Controller Using Opto-Coupler 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)
TL431A Download Download
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UCC28740 Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 319 07 Aug 2015 26
Design files (3)
Title Abstract Type Size (KB) Date Views
ZIP 150 07 Aug 2015 8
PDF 36 07 Aug 2015 8
PDF 31 07 Aug 2015 22

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