Non-Standard PoE (>25.5W) - High Efficiency Forward Converter (5V@10A) Reference Design PMP8923 (ACTIVE)

Description & Features

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Description

This converter provides a high power PoE output of 5V/10A. The TPS2379 PD controller allows the use of an external hot swap FET for increased efficiency. The UCC2897A PWM controller is used to implement a high efficiency active clamp forward converter.

Features

• High efficiency (93% with PoE supply, 92% with adapter supply)

• 5V at 10A output

• Isolated Forward with synchronous rectifier

• Uses TPS2379 combined with UCC2897A to implement a high efficiency active forward converter

• Allows an external hot swap FET for increased efficiency


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Schematic/Block Diagram

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Design Files

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Parametrics
 PMP8923.1
(Output Voltage 1)
Vin (Min) (V)42
Vin (Max) (V)57
Vout (Nom) (V)5
Iout (Max) (A)10
Output Power (W)50
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyForward- Active Clamp
POE

TI Devices (4)

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
CSD18503Q5A  40V, N ch NexFET MOSFET™, single SON5x6, 4.3mOhm  MOSFETs  Sample & Buy Not Available
TL431  Adjustable precision shunt regulator  Voltage references  Sample & Buy Not Available
TPS2379  IEEE 802.3at PoE High-Power PD Interface with External Gate Driver  Power over Ethernet (PoE)  Sample & Buy View Design Kits & Evaluation Modules
UCC2897  Current Mode Active Clamp PWM Controller  Offline & isolated DC/DC controllers & converters  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD18503Q5A VSONP (DQJ)| 8 Download
TL431 Download Download
Download Download
Download -
Download Download
Download Download
Download Download
Download Download
Download -
Download Download
TPS2379 Download
UCC2897 Download

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Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (1)
Title Type Size (KB) Date
PDF 659 27 Mar 2015
Design files (3)
Title Type Size (KB) Date
ZIP 251 27 Mar 2015
PDF 112 27 Mar 2015
PDF 417 27 Mar 2015

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