Type-three eight-channel PoE PSE controller with SRAM

23rd October 2019
Posted By : Sponsored Post
Type-three eight-channel PoE PSE controller with SRAM

The TPS23882 from Texas Instruments is an eight-channel power sourcing equipment (PSE) controller engineered to insert power onto Ethernet cables in accordance with the IEEE 802.3bt standard. The PSE controller can detect powered devices (PDs) that have a valid signature, determine the power requirements of the devices according to their classification, and apply power.

The TPS23882 improves on the TPS2388 with reduced current sense resistors, selectable Autonomous operation, SRAM programmability, programmable power limiting, capacitance measurement, and compatibility with TI’s FirmPSE system firmware.

Dedicated per port ADCs provide continuous port current monitoring and the ability to perform parallel classification measurements for faster port turn on times. A 1.25A port current limit and adjustable power limiting allows for the support of non-standard applications above 60W sourced. The 200mΩ current sense resistor and external FET architecture allow designs to balance size, efficiency, thermal and solution cost requirements. 

Port remapping and pin-to-pin compatibility with the TPS2388, TPS2380, and TPS2381 devices eases migration from previous generation PSE designs and enables interchangeable two-layer PCB designs to accommodate different system PoE power configurations.

To learn more, click here.

You must be logged in to comment

Write a comment

No comments

Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

Vietnam International Defense & Security Exhibition 2020
4th March 2020
Vietnam National Convention Center, Hanoi
The Sensor Show 2020
16th June 2020
Germany Messe Munich