Type 2 PoE PSE, 6kV Lightning Surge Reference Design
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Key Document


This reference design provides lightning surge protection solution for Power over Ethernet (PoE) Power Sourcing Equipment (PSE) systems based on TI's TPS23861 PSE controller. The need for implementing such protection will normally depend on the environment in which the PSE is intended to operate and the inherent isolation properties of the PSE. For industrial(NVR, DVR,etc) and Telecom(Ethernet switches, Gateways, etc) applications, lightning surge protection is an important design consideration in the system.

  • Ethernet Alliance certified for sending Type 2 (up to Class 4) power
  • 4-port Auto Mode PoE PSE solution with TPS23861
  • Auto Mode/Semi-Auto Mode/Manual Mode provides flexibility to power standard or non standard PDs
  • Able to pass 6kV common mode surge test and 4kV differential mode surge test

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Schematic/Block Diagram

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Design Files

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TI Devices (4)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ISO1541  2.5-kVrms, isolated unidirectional clock, bidirectional I2C isolator  Isolated interfaces  Sample & Buy View Design Kits & Evaluation Modules
ISO7221B  Dual-channel, 1/1, 5-Mbps digital isolator  Isolation  Sample & Buy View Design Kits & Evaluation Modules
LM5019  7.5-100V Wide Vin, 100mA Constant On-Time Synchronous Buck Regulator  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
TPS23861  2-pair, type-2, 4-channel Power-over-Ethernet (PoE) PSE with autonomous mode  Power over Ethernet (PoE) ICs  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ISO1541 Download Download
ISO7221B Download Download
LM5019 Download Download
Download Download
TPS23861 Download Download

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Technical documentation

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Datasheet (1)
Title Type Size (KB) Date
PDF 2040 23 Jul 2019
User guides (1)
Title Type Size (KB) Date
PDF 2718 15 Jan 2018
Design files (6)
Title Type Size (KB) Date
PDF 1965 03 Jan 2018
ZIP 1430 03 Jan 2018
ZIP 325 20 Dec 2017
PDF 375 20 Dec 2017
PDF 58 20 Dec 2017
PDF 471 20 Dec 2017
Related Tools & Software

Hardware development (1)

Name Part Number Tool Type
TPS23861EVM-612 Evaluation Module for Quad IEEE 802.3at PoE PSE Controller  TPS23861EVM-612  Evaluation boards 

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