18.5V to 57V Aux-Input to 5.3V, 10W PoE Isolated Sync-Flyback Reference Design
PMP30290
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Key Document

Description

This compact reference design is a typical PoE application, supplying 10W at 5.3V from Ethernet power. Data filter, external auxiliary input and EMI filter are all on board. The synchronous rectification improves the efficiency, important at only 5.3V output voltage.

Features
  • Good efficiency for this class of power, 91% @ 48Vin (PoE input), full load
  • Compact solution: without connectors and data filter, only 40mm x 60mm
  • The board can be configured to work with and without synchronous rectification

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Schematic/Block Diagram

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Design Guide

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Design Files

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Parametrics
 PMP30290.1
(Output Voltage 1)
Vin (Min) (V)42.5
Vin (Max) (V)57
Vout (Nom) (V)5.3
Iout (Max) (A)1.9
Output Power (W)10.07
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyFlyback- Synchronous

TI Devices (3)

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
CSD17578Q3A  30V, N ch NexFET MOSFETâ„¢, single SON3x3, 9.4mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
TL431  Adjustable precision shunt regulator  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
TPS23752  IEEE 802.3at PoE interface with flyback DC-DC controller and Sleep Mode Feature  Power over Ethernet (PoE) ICs  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD17578Q3A VSONP (DNH)| 8 Download Download
TL431 Download Download
Download Download
Download -
Download Download
Download Download
Download Download
Download Download
Download -
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TPS23752 Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 853 17 Nov 2017
Design files (6)
Title Type Size (KB) Date
ZIP 481 17 Nov 2017
ZIP 786 17 Nov 2017
PDF 1438 17 Nov 2017
PDF 477 17 Nov 2017
PDF 106 17 Nov 2017
PDF 165 17 Nov 2017

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