Small 3W Isolated Flyback, 30V…70Vin to 7V@430mA Reference Design PMP8657 (ACTIVE)

Description & Features

Technical Documents

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Description

This simple isolated flyback converts 30V…70Vin to 7V@430mA. The LM5021-2 controller is suitable for green mode converters due to pulse skip mode.

Features
  • Over 87% efficiency at full load
  • Over 70% efficiency at 10% load
  • Fast startup
  • Simple design
  • Improved light load efficiency thanks to skip mode, while working in constant switching frequency

See the Important Notice and Disclaimer covering reference designs and other TI resources.


  



Schematic/Block Diagram

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Test Data

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Design Files

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Parametrics
 PMP8657.1
(Output Voltage 1)
Vin (Min) (V)30
Vin (Max) (V)70
Vout (Nom) (V)7
Iout (Max) (A).43
Output Power (W)3.01
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyFlyback- Non Sync

TI Devices (1)

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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

CAD/CAE symbols

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

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User guides (1)
Title Type Size (KB) Date
PDF 538 24 Oct 2014
Design files (3)
Title Type Size (KB) Date
ZIP 22 24 Oct 2014
PDF 35 24 Oct 2014
PDF 168 24 Oct 2014

Support & training

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