PMP20220

Class 4 high efficiency PoE flyback-synchronous converter (5V/3A) reference design

PMP20220

Design files

Overview

This reference design utilizes the TPS23751 combination PoE PD controller and PWM controller, saving cost and size.  The synchronous flyback converter provides high efficiency for PoE applications such as wireless access points and IP phones.  The PoE PD can also supply up to 10W of primary power for auxiliary circuits.

Features
  • High efficiency (88% at 3A load)
  • 1500Vrms isolation
  • Optional 10W primary power for auxiliary circuits
Output voltage options PMP20220.1
Vin (Min) (V) 42.5
Vin (Max) (V) 57
Vout (Nom) (V) 5
Iout (Max) (A) 3
Output Power (W) 15
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.

TIDUDD7.PDF (1041 K)

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

TIDRRT1A.PDF (206 K)

Detailed schematic diagram for design layout and components

TIDRRT2A.PDF (37 K)

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

TIDRRT3A.PDF (161 K)

Detailed overview of design layout for component placement

TIDRRT5A.ZIP (879 K)

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

TIDCDM9A.ZIP (458 K)

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

TIDCDN0A.ZIP (781 K)

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

TIDRRT4A.PDF (754 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

MOSFETs

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

Data sheet: PDF | HTML
Powered devices

TPS23751IEEE 802.3at PoE interface with flyback DC-DC controller

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 PMP20220 Test Results Jul. 12, 2017

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