TIDA-00741

Non-Standard PoE, UPOE High-Efficiency Flyback Converter Reference Design for PoE PD Applications

TIDA-00741

Design files

Overview

TIDA-00741 uses two TPS2378 PD controllers for a forced 4-pair UPOE solution to 51W non-standard PoE PD applications. It incorportates the UCC2897A controller in a high-efficiency, great transient response (driven) synch flyback converter capble of 12V at 3.8A.

Features
  • Forced 4-Pair UPOE (51W)
  • 92% high efficiency (converter only)
  • Test Report is Included
  • Board can be purchased
Output voltage options TIDA-00741.1
Vin (Min) (V) 42.5
Vin (Max) (V) 57
Vout (Nom) (V) 12
Iout (Max) (A) 3.8
Output Power (W) 45.6
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.

TIDUB05.PDF (841 K)

Reference design overview and verified performance test data

TIDRIN0.PDF (296 K)

Detailed schematic diagram for design layout and components

TIDRIN1.PDF (253 K)

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

TIDCBD0.ZIP (2914 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

TPS2378IEEE 802.3at PoE High-Power PD interface with AUX Control

Data sheet document-pdfAcrobat PDF open-in-new HTML
N-channel MOSFETs

CSD18504Q5A40-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 6.6 mOhm

Data sheet document-pdfAcrobat PDF open-in-new HTML
PWM controllers

UCC2897A110-V active clamp current mode PWM controller with P-channel clamp FET and line OV protection

Data sheet document-pdfAcrobat PDF open-in-new HTML
Shunt voltage references

TL431Adjustable precision shunt regulator

Data sheet document-pdfAcrobat PDF open-in-new HTML
Supervisor & reset ICs

TL7700Voltage supervisor

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
Design guide TIDA-00741 Test Results Nov. 09, 2015

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