The TPS23880 is an 8-channel power sourcing equipment (PSE) controller engineered to insert power onto Ethernet cables in accordance with the IEEE 802.3bt standard. The eight individual power channels can be configured in any combination of 2-Pair (1-channel) or 4-Pair (2-channels) PoE Ports. The PSE controller can detect powered devices (PDs) that have a valid signature, complete mutual identification, and apply power.
Programmable SRAM enables in-field firmware upgradability over I2C to ensure IEEE compliance and interoperability with the latest PoE enabled devices. Dedicated per port ADCs provide continuous port current monitoring and the ability to perform parallel classification measurements for faster port turn on times. A ±3% accurate programmable port power limit provides the ability to expand the maximum power sourced above 90 W without exceeding 100 W while also making system level power management control more easy to implement and reliable. The Fast Shutdown (OSS) input provides up to eight levels of per port shutdown priority for applications requiring immediate disabling of multiple ports. The 255-mΩ 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, TPS23881, and TPS23882 devices eases migration from previous generation PSE designs and enables interchangeable 2-layer PCB designs to accommodate different system PoE power configurations.
TPS23880 product advisory and latest firmware download are available. Request now
For reduced Rsense (200mΩ), and autonomous mode operation, check out the TPS23881
For 2-pair, Type-3 30W operation, check out the TPS23882
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | TPS23880 Type-4 4-Pair 8-Channel PoE 2 PSE Controller with Programmable SRAM datasheet (Rev. G) | PDF | HTML | Aug 14, 2020 |
| Design guide | 24-Port (4 Pair) Power Sourcing Equipment Reference Design for Multiport Applications (Rev. C) | PDF | HTML | Mar 31, 2026 | |
| Application brief | How to Load TPS2388x SRAM and Parity Code Over I2C (Rev. E) | PDF | HTML | Apr 20, 2023 | |
| Test report | TPS23880 PoE2 Test Report | May 26, 2020 | ||
| Technical article | Key considerations for designing with the new PoE standard | PDF | HTML | Jul 16, 2018 | |
| Technical article | The new PoE standard: It’s almost here | PDF | HTML | Jun 6, 2018 | |
| Application note | Beyond BT High-Power PoE Solution using the TPS23880 and TPS2372-4 | Apr 17, 2018 | ||
| Application note | TPS23861 Power-On Considerations | Jul 21, 2015 |
For additional terms or required resources, click any title below to view the detail page where available.
BOOST-PSEMTHR-007 is the base board for the TPS23880 and TPS23881 PSE controllers. This board contains four 2-pair ports that can be used to send up to 30W/port for IEEE 802.3at applications and two 4-pair ports that can be used to send up to 90W/port for IEEE 802.3bt applications.
TPS23880EVM-008 is the daughter card to evaluate the TPS23880 which is a 4-pair, type-4, 8-channel Power-over-Ethernet (PoE) PSE with programmable SRAM. This daughter card provides evaluation and reference circuitry for the TPS23880 which is suitable for high power PSE applications such as campus (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RTQ) | 56 | Ultra Librarian |
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