Quad Output Isolated Synchoronous Fly-Buckboost Converter Reference Design
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PMP10545 is an Isolated Flyback Converter with the primary configured as a buck-boost inverter, using the LM5160 regulator IC. The design accepts an input voltage of 9Vin to 30Vin and provides four isolated outputs of +5.7Vout, each capable of supplying 350mA. The design uses an easily available off-the-shelf transformer, making it a more cost effective design solution.

  • Primary side regulation without Opto
  • Good regulation, within ±5%
  • No loop compensation required/fast transient response
  • Low BOM count & cost, compact solution size
  • No RC snubber at primary winding

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Schematic/Block Diagram

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Design Files

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(Output Voltage 1)
Vin (Min) (V)9
Vin (Max) (V)30
Vout (Nom) (V)5.7
Iout (Max) (A).35
Output Power (W)1.995
Input TypeDC

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5160  LM5160 wide input 65V, 2A synchronous buck/Fly-Buck™ converter  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)
LM5160 Download Download
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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 1183 10 Jun 2015
Design files (6)
Title Type Size (KB) Date
ZIP 213 10 Jun 2015
ZIP 581 10 Jun 2015
PDF 232 10 Jun 2015
PDF 56 10 Jun 2015
PDF 106 10 Jun 2015
PDF 143 10 Jun 2015

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