37-57Vdc Input, 5V/4A Output Cost Optimized Flyback Converter Reference Design
PMP20278
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Description & Features

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Key Document

Description

The LM5021 provides a cost effective solution for controlling an isolated flyback converter.  Diode rectification is used to keep cost low while maintaining good efficiency.  This converter is ideal for any cost sensitive telecom or PoE application.

Features
  • Diode recitifcation for low cost
  • Good efficiency (85% at 4A)
  • 1500Vrms isolation

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Schematic/Block Diagram

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Design Files

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Parametrics
 PMP20278.1
(Output Voltage 1)
Vin (Min) (V)37
Vin (Max) (V)57
Vout (Nom) (V)5
Iout (Max) (A)4
Output Power (W)20
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyFlyback- Non Sync

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5021  AC-DC current mode PWM controller  Offline & isolated DC/DC controllers & converters  Sample & Buy Not Available
TLV431A  1% Accuracy Low-Voltage Adjustable Precision Shunt Regulator  Voltage references  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5021 Download Download
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TLV431A Download Download
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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 707 07 Sep 2016
Design files (4)
Title Type Size (KB) Date
ZIP 330 07 Sep 2016
PDF 168 07 Sep 2016
PDF 59 07 Sep 2016
PDF 246 07 Sep 2016

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