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Class 4, Efficiency-Optimized, Flyback Converter Reference Design for PoE Applications
PMP6672
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Description

This reference evaluation module, featuring the TPS23754 PoE interface and DC-to-DC controller, is used for Class 4 PoE applications where high efficiency is required. Output power is 5V at 5A from either an adapter input(21.6-57VDC) or power over ethernet. in general, the efficiency gain is on the order of 3-4%.

Features
  • High efficiency(90%), converter only efficieny is 92%
  • 5V at 5A output
  • Isolated Flyback with synchornous rectifier
  • Uses TPS23754 hig-power,high-efficiency PoE interface PD and PWM controller
  • Capable of accepting power from AUX sources such as adapters
  • This circuit design is full-functional tested and recommended for new designs


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Schematic/Block Diagram

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Test Data

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Parametrics
 PMP6672.1
(Output Voltage 1)
Vin (Min) (V)21.6
Vin (Max) (V)57
Vout (Nom) (V)5
Iout (Max) (A)5
Output Power (W)25
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyFlyback- Synchronous
POE

TI Devices (2)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TLV431A  1% accuracy, low-voltage, adjustable precision shunt regulator  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
TPS23754  IEEE 802.3at, high efficiency, PoE interface and DC/DC controller  Power over Ethernet (PoE) ICs  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TLV431A Download Download
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Download -
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TPS23754 Download Download

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Technical documentation

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User guides (2)
Title Type Size (KB) Date
PDF 628 16 Sep 2013
PDF 540 16 Sep 2013
Design files (2)
Title Type Size (KB) Date
PDF 126 16 Sep 2013
PDF 128 16 Sep 2013

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