PMP9175

Class 3 5V/2.3A High Efficiency Synchronous Flyback Converter for PoE Application Reference Design

PMP9175

Design files

Overview

This converter is used for Class 3 PoE applications where high efficiency and isolation are required. The specific output for this design is 5V@2.3A. The flyback converter with synchronous rectifier provides excellent efficiency and small size for PoE applications such as a IP Phones. The TPS23753APW contains both the PoE Powered Device and the PWM controller functions

Features
  • Ethernet Alliance certified for receiving Class 3 power
  • High efficiency for both PoE supply power and adapter supply power (up to more than 90%)
  • The output is 5V/2.3A
  • Isolated Flyback with synchornous rectifier
  • Small size solution
  • Uses TPS23753APW with PoE interface PD and PWM controller
  • This circuit design is full-functional tested and recommended for new designs
Output voltage options PMP9175.1
Vin (Min) (V) 36
Vin (Max) (V) 57
Vout (Nom) (V) 5
Iout (Max) (A) 2.3
Output Power (W) 11.5
Isolated/Non-Isolated Isolated
Input Type DC
Topology Flyback- Synchronous^POE
Communications equipment
Enterprise systems
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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.

TIDU352.PDF (661 K)

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

TIDR643.PDF (254 K)

Detailed schematic diagram for design layout and components

TIDR644.PDF (137 K)

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

TIDR645.PDF (224 K)

Detailed overview of design layout for component placement

TIDC434.ZIP (489 K)

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

Products

Includes TI products in the design and potential alternatives.

MOSFETs

CSD17527Q5A30-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 10.8 mOhm

Data sheet: PDF
MOSFETs

CSD17551Q3A30-V, N channel NexFET™ power MOSFET, single SON 3 mm x 3 mm, 9 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 PMP9175 Test Results May 14, 2014

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