110W Industrial POE Isolated Flyback Reference Design
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Key Document


PMP20497 is an isolated flyback converter utilizing the LM5022 for industrial applications. This design accepts input voltage of 12V. The test report here is 12Vin/~54V out @ 2A of load current.  Switching frequency is set to 100kHz. A custom Pulse transformer is used in this test report for all the scope capture.

  • 12Vin, 54Vout @ 2A out – IC capable of 6V to 60Vin
  • 110W isolated output
  • Peak efficiency 92%
  • High power density: 110W/6 square inches
  • Cycle-by-cycle current limit

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(Output Voltage 1)
Vin (Min) (V)12
Vin (Max) (V)12
Vout (Nom) (V)54
Iout (Max) (A)2
Output Power (W)108
Input TypeDC

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5022  6-60V Wide Vin, current mode boost, SEPIC and Flyback controller  Step-up (boost) regulators  Sample & Buy View Design Kits & Evaluation Modules
LMV431B  0.5%, low-voltage (1.24-V) adjustable precision shunt regulator  Voltage references  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5022 Download Download
LMV431B Download

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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 831 08 Feb 2017
Design files (6)
Title Type Size (KB) Date
ZIP 543 02 Sep 2017
PDF 168 02 Sep 2017
ZIP 510 08 Feb 2017
PDF 1151 08 Feb 2017
PDF 252 08 Feb 2017
PDF 65 08 Feb 2017

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