Class 3 Dual Output Isolated Flyback Converter for PoE Applications Reference Design
PMP11107
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Description & Features

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Key Document

Description

This converter is used for Class 3 PoE applications that require 3.3V/1A and 5V/1A outputs. The dual output flyback converter with synchronous rectifiers provides excellent efficiency and small size for PoE applications, such as an IP phone.  The TPS23753A contains both the PoE powered device and the PWM controller functions.

Features
  • Dual outputs of 3.3V/1A and 5V/1A
  • High efficiency (87.9%) at max load
  • 1500Vrms isolation
  • TPS23753A contains both PD and PWM controllers

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Schematic/Block Diagram

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Design Guide

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Design Files

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Parametrics
 PMP11107.1
(Output Voltage 1)
PMP11107.2
(Output Voltage 2)
Vin (Min) (V)3636
Vin (Max) (V)5757
Vout (Nom) (V)3.35
Iout (Max) (A)11
Output Power (W)3.35
Isolated/Non-IsolatedIsolatedIsolated
Input TypeDCDC
TopologyFlyback- Synchronous
POE
Flyback- Synchronous
POE

TI Devices (2)

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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
TPS23753A  IEEE 802.3-2005 PoE interface and Isolated Converter controller with Enhanced ESD Ride-Through  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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TPS23753A Download Download

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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 510 09 May 2016
Design files (3)
Title Type Size (KB) Date
ZIP 339 09 May 2016
PDF 116 09 May 2016
PDF 422 09 May 2016

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