TPS23882
- IEEE 802.3bt PSE solution for PoE 2 Type-3 2-Pair Power Over Ethernet applications
- Compatible with TI’s FirmPSE system firmware
- SRAM Programmable memory
- Programmable power limiting accuracy ±3%
- 200-mΩ Current sense resistor
- Legacy PD capacitance measurement
- Selectable 2-pair port power allocations
- 4 W, 7 W, 15.4 W, or 30 W
- Dedicated 14-bit integrating current ADC per port
- Noise immune MPS for DC disconnect
- 2% Current sensing accuracy
- 1- or 3-Bit fast port shutdown input
- Auto-class discovery and power measurement
- Never Fooled 4-Point detection
- Inrush and operational foldback protection
- 425-mA and 1.25-A Selectable current limits
- Port re-mapping
- 8-Bit or 16-bit I2C communication
- Flexible processor controlled operating modes
- Auto, semi auto and manual / diagnostic
- Per Port voltage monitoring and telemetry
- –40°C to +125°C Temperature operation
The TPS23882 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 PSE controller can detect powered devices (PDs) that have a valid signature, complete mutual identification, and apply power.
The TPS23882 improves on the TPS2388 with reduced current sense resistors, SRAM programmability, programmable power limiting, capacitance measurement, and compatibility with TI’s FirmPSE system firmware (see Device Comparison Table).
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 1.25-A port current limit and adjustable power limiting allows for the support of non-standard applications above 60-W sourced. The 200-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, TPS23880, and TPS23881 devices eases migration from previous generation PSE designs and enables interchangeable 2-layer PCB designs to accommodate different system PoE power configurations.
Request more information
TPS23882 product advisory and latest firmware download are available. Request now
TI's FirmPSE System Firmware, GUI, Host Interface Protocol and FirmPSE advisory is available. Request now
Technical documentation
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS23882 Type-3 2-Pair 8-Channel PoE 2 PSE Controller with SRAM and 200 mΩ RSENSE datasheet (Rev. D) | PDF | HTML | 14 Aug 2020 |
| Application brief | How to Load TPS2388x SRAM and Parity Code Over I2C (Rev. E) | PDF | HTML | 20 Apr 2023 | |
| Application brief | Choosing PoE PSE System Software Solutions | PDF | HTML | 03 Aug 2021 | |
| Test report | TPS23882 SIFOs 802.3bt Conformance Test Report | 29 Jan 2020 | ||
| Technical article | Get more out of your power supply with port power management | PDF | HTML | 11 Nov 2019 | |
| Analog Design Journal | Challenges and solutions for PoE systems in Ethernet switches | 30 Sep 2019 | ||
| EVM User's guide | TPS23882EVM: PoE, PSE, TPS23882 Evaluation Module | 24 Jun 2019 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
BOOST-PSEMTHR8-097 — TPS23882 Type-3, 30W, 2-pair, PSE motherboard for 8-port PSE systems
PSEMTHR24EVM-081 — Mother board for 24-port IEEE 802.3bt ready PSE system
PSEMTHR24EVM-081 is the base board for the TPS23881 and TPS23882 PSE controllers. This board contains 24 2-Pair / 4-Pair ports that can that can be used to send up to 30W/port for IEEE 802.3at applications and up to 90W/port for IEEE 802.3bt applications.
PSEMCUDAUEVM-082 — MCU daughter card for 24-port IEEE 802.3bt ready PSE system
PSEMCUDAUEVM-082 is the MSP430 MCU daughter card for TI's 24-port reference designs with the TPS23881 and TPS23882. This board combined with the GUI enables FirmPSE which is TI's production ready system firmware that can deliver system features such as port power management and the use of multiple (...)
TPS23882EVM-008 — TPS23882 Type-3, 30W, 2-pair, PSE daughter card for 8-port PSE systems
The full PoE Evaluation ecosystem includes the following:
TPS23882EVM-084 — TPS23882 Type-3, 30W, 2-pair, PSE daughter card for 24-port PSE systems
TPS23882EVM-084 is a 24-port (24-channel) daughter card used to evaluate the TPS23882 which is a 2-pair, type-3, 8-channel Power-over-Ethernet (PoE) PSE with 200mΩ sense resistor. This daughter card provides evaluation and reference circuitry for the TPS23882 in high port count applications (...)
SLVC772 — TPS2388x EVM GUI
Supported products & hardware
Products
Power sourcing equipment
Hardware development
Evaluation board
Daughter card
Development kit
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TIDA-050026-23882 — 24-port (PoE 2, 2-pair) power sourcing equipment reference design for multi-port applications ;
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RTQ) | 56 | Ultra Librarian |
Ordering & quality
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- Qualification summary
- Ongoing reliability monitoring
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Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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