85-265VAC Input, 54V/30W Power Over Ethernet PSE Reference Design PMP20199 (ACTIVE)

Description & Features

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Key Document

Description

This reference design provides a universal AC input, 30W PSE solution for Power Over Ethernet.  The UCC28700 uses primary side regulation to create an isolated 54V rail at low cost.  The TPS23861 injects the 54V rail onto the ethernet cable.

Features
  • Single port PSE solution for power over ethernet
  • Over 90% efficiency at full load, low standby power
  • Primary side regulation reduces cost
  • 1oz, 2-layer board measuring 90mm x 50mm size

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Schematic/Block Diagram

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Design Guide

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Design Files

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Parametrics
 PMP20199.1
(Output Voltage 1)
Vin (Min) (V)90
Vin (Max) (V)265
Vout (Nom) (V)54
Iout (Max) (A).56
Output Power (W)30.24
Isolated/Non-IsolatedIsolated
Input TypeAC
TopologyFlyback- Quasi Resonant

TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS23861  QUAD IEEE 802.3at Power-Over-Ethernet PSE Controller  Power over Ethernet (PoE)  Sample & Buy View Design Kits & Evaluation Modules
TPS715  50 mA, 24 V, 3.2-μA Iq, Low-Dropout Linear Regulator in SC70 Package  Power management  Sample & Buy View Design Kits & Evaluation Modules
UCC28700  Constant-Voltage, Constant-Current PWM With Primary-Side Regulation  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TPS23861 Download Download
TPS715 Download -
UCC28700 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 3014 24 Oct 2017
Design files (4)
Title Type Size (KB) Date
PDF 641 24 Oct 2017
PDF 96 24 Oct 2017
PDF 38 24 Oct 2017
PDF 190 24 Oct 2017

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