PoE PSE Type 2 (30W) IEEE 802.3at Fully Autonomous Quad Port Solution.


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A fully autonomous IEEE802.3at, Type 2 (30W) Power-over-Ethernet (PoE) 4 Port Power Sourcing Equipment (PSE) solution. An additional configuration of two non-standard, high power ports (<60W) is provided. Both configurations support Gigabit Ethernet data pass through in 1000BASE-T ports.

This reference design is made up of two boards: Motherboard (TPS23861EVM-612) and Daughter board (TPS23861EVM-613). The daughter board features two TPS23861 IEEE 802.3at PoE PSE controller devices. The motherboard provides a multi-port base platform interface for the daughter board. Additionally, the motherboard provides interfaces for two optional boards: MSP-EXP430G2 LaunchPad™ (if custom Power Management programmability is desired) and USB-TO-GPIO Interface Adapter (if PC GUI based Power Management configuration is desired).

The complete solution has undergone exhaustive PoE testing and passes all industry-recognized conformance/interoperability test suites allowing customers to copy/paste the design without concern. The 2-layer PCB, daughter card, design delivers all of this on a low cost platform.


• TPS23861 PSE devices default to full autonomous mode so no digital interface is required
• Passes UNH-IOL PoE Conformance/Interoperability and SIFOs Type 1/Type 2 Test Suites
• Four IEEE802.3at, Type 2 (30 W) ports and Two non-standard, high power (<60W) ports supported
• Entire design is powered by a single DC supply. Logic power is delivered by an on board 3.3V regulator (LM5007)
• I2C interface allows programming via PC-based-GUI, or Microcontroller based code
• Port ON status LEDs provides simple status indication in fully autonomous mode


(Output Voltage 1)
Vin (Min) (V)44
Vin (Max) (V)57
Vout (Nom) (V)48
Iout (Max) (A).6
Output Power (W)28.8
Input TypeDC
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TPS23861EVM: Evaluation Module for the TPS23861 QUAD IEEE 802.3at POWER-OVER-ETHERNET PSE CONTROLLER


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USB Interface Adapter EVM


Pricing may vary.

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TI Devices (3)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ISO7241C  2.5 kVrms, 25 Mbps, 4-Channel 3/1 Digital Isolator   Isolation  Sample & Buy View Design Kits & Evaluation Modules
LM5007  9-75V Wide Vin, 500mA Constant On-Time Non-Synchronous Buck Regulator  Step-Down (Buck)  Sample & Buy View Design Kits & Evaluation Modules
TPS23861  QUAD IEEE 802.3at Power-Over-Ethernet PSE Controller  Power Over Ethernet (PoE)/LAN Solutions  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents
Application notes (2)
Title Abstract Type Size (KB) Date Views
PDF 916 11 Jun 2014 346
PDF 1736 25 Apr 2014 250
Design files (10)
Title Abstract Type Size (KB) Date Views
ZIP 204 24 Jul 2014 69
ZIP 318 24 Jul 2014 90
PDF 1190 24 Jul 2014 110
PDF 2179 24 Jul 2014 131
PDF 274 24 Jul 2014 84
PDF 328 24 Jul 2014 130
PDF 94 24 Jul 2014 202
PDF 97 24 Jul 2014 231
PDF 171 24 Jul 2014 450
PDF 274 24 Jul 2014 862
Related Tools & Software

Design Kits & Evaluation Modules (3)

Name Part Number Tool Type
MSP430 LaunchPad Value Line Development kit  MSP-EXP430G2  Evaluation Modules & Boards 
TPS23861EVM-612 Evaluation Module for Quad IEEE 802.3at PoE PSE Controller  TPS23861EVM-612  Evaluation Modules & Boards 
USB Interface Adapter EVM  USB-TO-GPIO  Evaluation Modules & Boards 

Software (3)

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