Class 3 COT Buck Converter for PoE Application Reference Design
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Key Document


The PMP9416 reference design is a single output non-isolated buck power supply for PoE applications. It accepts a 48V nominal input and provides a 5V 1A output. The input can be varied from 33V to 57V. The design features the LM5160 synchronous buck converter with the benefit of diode emulated mode which can improve the light load efficiency as compared to FPWM (forced pulse width modulation) mode. The LM5160’s integrated MOSFETs and constant on time control minimize the external component count and enables a small power dense layout.

  • Single 5V 1A output
  • Wide input voltage range of 33V to 57V
  • Provide 5W supply power
  • Small PCB size( 25mm*25mm)

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Schematic/Block Diagram

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Design Guide

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Design Files

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(Output Voltage 1)
Vin (Min) (V)33
Vin (Max) (V)57
Vout (Nom) (V)5
Iout (Max) (A)1
Output Power (W)5
Input TypeDC
TopologyBuck- Synchronous

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 1004 12 Aug 2015
Design files (3)
Title Type Size (KB) Date
ZIP 40 12 Aug 2015
PDF 105 12 Aug 2015
PDF 115 12 Aug 2015

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