PMP20931

Class 3 Synchronous Flyback Converter (3.7V/2.9A) PoE Reference Design

PMP20931

Design files

Overview

The PMP20931 reference design is a high efficiency synchronous flyback converter with a 36-57Vdc PoE input and an isolated 3.7V/2.9A output.  The TPS23753A contains both the PoE PD controller and PWM controller, saving size and cost.  This design ideally suited for any PoE application such as an IP phone or wireless access point.

Features
  • 87% efficiency at 2.9A load
  • 1500VRMS isolation
  • Small size (2.0 x 2.3 inches)
Output voltage options PMP20931.1
Vin (Min) (V) 36
Vin (Max) (V) 57
Vout (Nom) (V) 3.7
Iout (Max) (A) 2.9
Output Power (W) 10.73
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.

TIDUDL1.PDF (771 K)

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

TIDRSQ2.PDF (150 K)

Detailed schematic diagram for design layout and components

TIDRSQ3.PDF (34 K)

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

TIDRSQ4.PDF (139 K)

Detailed overview of design layout for component placement

TIDRSQ6.ZIP (701 K)

Files used for 3D models or 2D drawings of IC components

TIDCDU5.ZIP (408 K)

Design file that contains information on physical board layer of design PCB

TIDRSQ5.PDF (784 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

N-channel MOSFETs

CSD17579Q3A30-V, N channel NexFET™ power MOSFET, single SON 3 mm x 3 mm, 14.2 mOhm

Data sheet: PDF | HTML
Powered devices

TPS23753AIEEE 802.3-2005 PoE interface and Isolated Converter controller with Enhanced ESD Ride-Through

Data sheet: PDF | HTML
Shunt voltage references

TLV431A1% accuracy, low-voltage, adjustable precision shunt regulator

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP20931 Test Results Sep. 20, 2017

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