Class 3,Cost and Efficiency Optimized Buck Converter for PoE Applications Reference Design
PMP4679
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Description

This reference evaluation module, featuring the TPS23750 PoE DC-to-DC controller, is used for class 3 PoE applications where low-cost and high efficiency are required.

The module accepts input voltages between 37-57V ac and output 12V at 0.95A.

Features
  • Nonisolated upside-down buck
  • 12V at 0.95 A output
  • Low cost design with high efficiency (88%)
  • Uses TPS23750 IEEE802.3af PD controller with integrated DC/DC controller
  • Small board size
  • This circuit design is fully functional, tested and recommended for new designs.

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


  



Schematic/Block Diagram

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Test Data

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Parametrics
 PMP4679.1
(Output Voltage 1)
Vin (Min) (V)37
Vin (Max) (V)57
Vout (Nom) (V)12
Iout (Max) (A).95
Output Power (W)11.4
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBuck- Upside Down
POE

TI Devices (2)

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
TLV431  1.5% Accuracy Low-Voltage Adjustable Precision Shunt Regulator  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
TPS23750  IEEE 802.3af PD Controller with Integrated DC/DC  Power over Ethernet (PoE)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TLV431 Download Download
Download Download
Download -
Download Download
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TPS23750 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 410 16 Sep 2013
Design files (2)
Title Type Size (KB) Date
PDF 110 16 Sep 2013
PDF 57 16 Sep 2013

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