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Class 4 PoE High Efficiency Active Clamp Forward Converter (3.3V) Reference Design
PMP10288
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Key Document

Description

The PMP10288 reference design is a Power Over Ethernet (POE) active clamp forward converter. It features the TPS23754, which is a combination of a POE Powered Device (PD) controller and PWM controller. CSD17501Q5A FETs are used for high efficiency synchronous rectification. The input accepts standard Type 2 POE voltage of 42.5VDC-57VDC or a 36VDC-57VDC auxiliary voltage. The output power is an isolated 3.3VDC at 6.9A with PoE input or 3.3VDC at 7.2A with auxiliary input.

Features
  • Integrated PD and PWM controller
  • Power Conversion Efficiency of 90% at full load
  • Low gate charge MOSFETs for high efficiency synchronous rectification
  • Auxillary power input available
  • Test report includes efficiency, ripple, load step, turn-on response, loop stability, and thermal plot

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Schematic/Block Diagram

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Design Guide

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Design Files

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Parametrics
 PMP10288.1
(Output Voltage 1)
Vin (Min) (V)36
Vin (Max) (V)57
Vout (Nom) (V)3.3
Iout (Max) (A)7.2
Output Power (W)23.76
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyForward- Active Clamp
POE

TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD17501Q5A  30V, N-Channel NexFET™ Power MOSFET with 20 Volt Vgs  MOSFETs  Sample & Buy View 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)
CSD17501Q5A VSONP (DQJ)| 8 Download Download
TLV431A Download Download
Download Download
Download -
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TPS23754 Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 938 23 Jun 2015
Design files (3)
Title Type Size (KB) Date
ZIP 239 23 Jun 2015
PDF 107 23 Jun 2015
PDF 522 23 Jun 2015

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