Triple Output Isolated Fly-Buck Power Supply for Industrial Application Reference Design
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PMP10516 is an Isolated Flybuck Converter using the LM25017 regulator IC. The design accepts an input voltage of 20.4Vin to 28.8Vin (40Vin Max. Peak) and provides three isolated outputs. The +5Vout rail is regulated for precision using the LP2951 linear regulator.

  • Multiple isolated outputs
  • Primary side regulation without opto, good cross regulation, within +/-5%
  • Low BOM count & cost, compact solution size
  • Constant On Time control, no loop compensation required, and fast transient response
  • LM25017 wide vin range

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Design Files

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(Output Voltage 1)
(Output Voltage 2)
(Output Voltage 3)
Vin (Min) (V)20.420.420.4
Vin (Max) (V)28.828.828.8
Vout (Nom) (V)-15515
Iout (Max) (A).06.1.2
Output Power (W).9.53
Input TypeDCDCDC

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM25017  7.5-48V Wide Vin, 650mA Constant On-Time Synchronous Buck Regulator  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
LP2951  100-mA, 30-V, low-dropout voltage regulator with power good & enable  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM25017 Download Download
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LP2951 Download Download
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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 1304 15 May 2015
Design files (6)
Title Type Size (KB) Date
ZIP 176 15 May 2015
ZIP 364 15 May 2015
PDF 680 15 May 2015
PDF 97 15 May 2015
PDF 118 15 May 2015
PDF 287 15 May 2015

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