Class 4- High Efficiency 12V Class 4 PoE Converter Reference Design


Design files


This design is a 12V/2.1A synchronous flyback converter for high efficiency PoE applications. The TPS23752 combines the Powered Device and PWM controllers in one package. Additional features are synchronous rectifier disable for improved light load efficiency and support for ulta low power sleep mode.

Output voltage options PMP8812.1
Vin (Min) (V) 21.6
Vin (Max) (V) 57
Vout (Nom) (V) 12
Iout (Max) (A) 2.1
Output Power (W) 25.2
Isolated/Non-Isolated Isolated
Input Type DC
Topology Flyback- Synchronous^POE
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

SLVU922.PDF (467 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

SLVRB65.PDF (64 K)

Detailed schematic diagram for design layout and components

SLVRB66.PDF (195 K)

Complete listing of design components, reference designators, and manufacturers/part numbers


Includes TI products in the design and potential alternatives.

Powered devices

TPS23752IEEE 802.3at PoE interface with flyback DC-DC controller and Sleep Mode Feature

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report PMP8812 Test Results May 24, 2013

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