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TIDA-050023

Type-3 IEEE802.3bt-ready flyback converter PoE powered device reference design

Design files

TIDA-050023

Design files

Overview

This design showcases a low cost, Type-3, Class 6, 51W flyback converter for powered devices through Power over Ethernet. The TPS2373-3 PD controller provides detection and classification while also powering up the LM51551-Q1 PWM controller through its advanced startup feature. This design takes in a 42V-57V PoE input and outputs a 12V rail for applications such as IP network cameras and wireless access points.

In need of an IEEE802.3bt-ready PSE controller? Check out the TPS23881.

Features
  • Supports power levels for IEEE802.3bt Type 3
  • Isolated diode rectified flyback design
  • Built in hiccup mode protection for superior thermal performance during faults
  • PD Advanced Startup for PWM controller
  • Automatic Maintain Power Signature (MPS)
  • Oring circuit for auxiliary power through AC/DC
Output voltage options TIDA-050023.1
Vin (Min) (V) 42
Vin (Max) (V) 57
Vout (Nom) (V) 12
Iout (Max) (A) 4.25
Output Power (W) 51
Isolated/Non-Isolated Isolated
Input Type DC
Topology Flyback- Non Sync
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Design files & products

Design files

Download ready-to-use system files to speed your design process.

download Design guide — TIDA-050023
TIDUEL2.PDF (15667 KB)

Reference design overview and verified performance test data

download Assembly drawing — TIDA-050023
TIDRXW9.PDF (286 KB)

Detailed overview of design layout for component placement

download Bill of materials (BOM) — TIDA-050023
TIDRXW7.PDF (38 KB)

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

download CAD/CAE symbol — TIDA-050023
TIDRXW8.ZIP (2328 KB)

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

download Gerber file — TIDA-050023
TIDCF24.ZIP (713 KB)

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

download PCB layout — TIDA-050023
TIDRXX0.PDF (1559 KB)

PCB layer plot file used for generating PCB design layout

download Schematic — TIDA-050023
TIDRXX2.PDF (362 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Shunt voltage references

TL431LI — Adjustable precision shunt regulator with optimized reference current (pin layout: KRA)

Data sheet: PDF | HTML
DC/DC controllers

LM5155 — 2.2-MHz wide VIN, 1.5-A MOSFET driver, non-synchronous boost controller

Data sheet: PDF | HTML
Powered devices

TPS2373 — IEEE 802.3bt PoE high-power PD interface with advanced startup

Data sheet: PDF | HTML

Start development

Hardware development

Evaluation board

TPS2373-4EVM-758 —

TPS2373-4 evaluation module for IEEE802.3bt PoE PD applications

This design showcases a low cost, Type-3, Class 6, 51W flyback converter for powered devices through Power over Ethernet. The TPS2373-3 PD controller provides detection and classification while also powering up the LM51551-Q1 PWM controller through its advanced startup feature. This design takes in (...)
EVM user’s guide: PDF | HTML
Supported products & hardware

Supported products & hardware

Hardware development
Reference design
PMP20878 — Class 8 high power PoE isolated active clamp forward converter (24V/3A) reference design TIDA-050023 — Type-3 IEEE802.3bt-ready flyback converter PoE powered device reference design
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TPS2373-4EVM-758 —

TPS2373-4 evaluation module for IEEE802.3bt PoE PD applications

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Hardware development
Reference design
PMP20878 — Class 8 high power PoE isolated active clamp forward converter (24V/3A) reference design TIDA-050023 — Type-3 IEEE802.3bt-ready flyback converter PoE powered device reference design
TI’s Standard Terms and Conditions for Evaluation Items apply.

Technical documentation

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Top documentation Type Title Format options Date
* Design guide Type 3 IEEE802.3bt-ready Flyback Converter PoE PD Reference Design Oct 18, 2018

Related design resources

Reference designs

REFERENCE DESIGN
TIDA-00741 — Non-Standard PoE, UPOE High-Efficiency Flyback Converter Reference Design for PoE PD Applications

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