Class 8 High Power PoE Isolated Active Clamp Forward Converter (24V/3A) Reference Design

(ACTIVE) PMP20878

Description & Features

Technical Documents

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Key Document

Description

This reference design is a high power PoE Powered Device (PD) plus active clamp forward converter.  The TPS2373 high power PD controller EVM (TPS2373-4EVM-758) provides all functions necessary to implement an IEEE802.3bt-ready PD.  This is paired up with an active clamp forward converter utilizing the UCC2897A controller.  The high efficiency 24V/3A output using synchronous rectifiers is ideally suited for high power PoE applications such as  IP security cameras and LED lighting applications.

Features
  • Class 8 IEEE802.3bt-ready PoE PD
  • Automatic MPS
  • Advanced start-up
  • Synchronous rectifiers for high efficiency (92% at 3A)
  • 1500VRMS isolation

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




Parametrics
 PMP20878.1
(Output Voltage 1)
Vin (Min) (V)40
Vin (Max) (V)57
Vout (Nom) (V)24
Iout (Max) (A)3
Output Power (W)72
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
CSD19534Q5A  100V, N-Channel NexFET Power MOSFET  Power MOSFET  Sample & Buy Not Available
TL431A  Adjustable Precision Shunt Regulator  Voltage Reference  Sample & Buy Not Available
TPS2373  High-Power PoE PD Interface with Advanced Startup  Power Over Ethernet (PoE)/LAN Solutions  Sample & Buy View Design Kits & Evaluation Modules
UCC2897A  Advanced Current-Mode Active Clamp PWM Controller  Offline and Isolated DC/DC Controllers and Converters  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 1046 19 Jun 2017 686
Design files (2)
Title Abstract Type Size (KB) Date Views
PDF 403 27 Jun 2017 557
PDF 105 19 Jun 2017 80
Related Tools & Software

Design Kits & Evaluation Modules (1)

Name Part Number Tool Type
TPS2373 Evaluation Module for IEEE802.3bt PoE PD Applications  TPS2373-4EVM-758  Evaluation Modules & Boards 


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