PMP11271

Class 3 PoE Isolated Flyback Converter/Buck POL Converter (5V/1.25A, 3.3V/1.075A) Reference Design

PMP11271

Design files

Overview

The PMP11271 reference design is ideal for Class 3 PoE PD applications such as IP phones.  The TPS23753A combined PD controller/PWM controller saves cost and size by providing both functions is a single package.  The TPS62082 synchronous buck converter has integrated FETs, resulting in a small, efficient POL converter.

Features
  • Isolated 5V/1.25A output
  • Non-isolated 3.3V/1.075A POL converter
  • Small size, 1 x 2 inches
  • 5.7mm transformer height
Output voltage options PMP11271.1 PMP11271.2
Vin (Min) (V) 36 4.5
Vin (Max) (V) 57 5.5
Vout (Nom) (V) 5 3.3
Iout (Max) (A) 1.25 1.075
Output Power (W) 6.25 3.5475
Isolated/Non-Isolated Isolated Non-Isolated
Input Type DC DC
Topology POE Buck- Synchronous
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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.

TIDUDW9.PDF (969 K)

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

TIDRTT6.PDF (216 K)

Detailed schematic diagram for design layout and components

TIDRTT7.PDF (107 K)

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

TIDRTT8.PDF (103 K)

Detailed overview of design layout for component placement

TIDRTU0.ZIP (785 K)

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

TIDCE29.ZIP (366 K)

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

TIDCE30.ZIP (787 K)

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

TIDRTT9.PDF (790 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

TPS620821.2A High Efficient Step Down Converter in 2x2mm SON Package. 3.3 Vout (Min)

Data sheet: PDF | HTML
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 PMP11271 Test Results Nov. 30, 2017

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