PMP9068

Class 1 Isolated Synchronous Flyback Converter (3.3V/900mA) for PoE PD Applications Reference Design

PMP9068

Design files

Overview

This converter is used for Class 1 PoE PD applications where isolation is required.  The synchronous rectifier driven from the main xfmr provides good efficiency and low cost.  This converter is well suited for low cost IP Phone applications

Features
  • Isolated 3.3V/900mA output
  • Optional connections for non-isolated output
  • Synchronous rectifier for improved efficiency
  • Small size
  • TPS23753A combined PD/PWM controller
Output voltage options PMP9068.1
Vin (Min) (V) 36
Vin (Max) (V) 57
Vout (Nom) (V) 3.3
Iout (Max) (A) .9
Output Power (W) 2.97
Isolated/Non-Isolated Isolated
Input Type DC
Topology Flyback- Synchronous^POE

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.

TIDUAT1.PDF (544 K)

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

TIDRHM9.PDF (323 K)

Detailed schematic diagram for design layout and components

TIDRHN0.PDF (103 K)

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

TIDCB30.ZIP (336 K)

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

Products

Includes TI products in the design and potential alternatives.

Powered devices

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

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Shunt voltage references

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

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Technical documentation

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Type Title Date
* Test report PMP9068 Test Results Sep. 28, 2015

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