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TPS23882

ACTIVE

Type-3, 2-pair, 8-channel PoE PSE controller with SRAM and 200-mΩ RSENSE

Product details

Vin (min) (V) 44 Vin (max) (V) 57 ILIM Programmable PoE standards supported 802.3at Type 1 (802.3af), 802.3at Type 2, 802.3bt Type 3 FET External MPS method DC Disconnect Pair control 2-Pair Alt A Operating temperature range (°C) -40 to 125 Features Auto Mode, Current Limit with Foldback, Fast shutdown, Multi Level Port Priority, Over Current Reporting, Over Temp Reporting, Port remapping, Programmable PCUT, Programmable Port Power Limiting, SRAM Programmable Number of PSE ports 8 Rating Catalog
Vin (min) (V) 44 Vin (max) (V) 57 ILIM Programmable PoE standards supported 802.3at Type 1 (802.3af), 802.3at Type 2, 802.3bt Type 3 FET External MPS method DC Disconnect Pair control 2-Pair Alt A Operating temperature range (°C) -40 to 125 Features Auto Mode, Current Limit with Foldback, Fast shutdown, Multi Level Port Priority, Over Current Reporting, Over Temp Reporting, Port remapping, Programmable PCUT, Programmable Port Power Limiting, SRAM Programmable Number of PSE ports 8 Rating Catalog
VQFN (RTQ) 56 64 mm² 8 x 8
  • 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
  • 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.

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.

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Technical documentation

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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.

Evaluation board

BOOST-PSEMTHR8-097 — TPS23882 Type-3, 30W, 2-pair, PSE motherboard for 8-port PSE systems

This motherboard is the base board for the PSE Controller ecosystem. The octal channel, TPS23882, IEEE 802.3bt ready PoE PSE controller can be evaluated by using the motherboard (BOOST-PSEMTHR8-097) and TPS23882EVM daughter card (TPS23882EVM-008) (sold separately). The full PoE Evaluation ecosystem (...)
User guide: PDF
Not available on TI.com
Evaluation board

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.

Daughter card

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 (...)

Not available on TI.com
Daughter card

TPS23882EVM-008 — TPS23882 Type-3, 30W, 2-pair, PSE daughter card for 8-port PSE systems

The TPS23882EVM-008 daughter card features an 8 channel, IEEE 802.3bt ready (Type-3, 30W) 2-Pair PSE controller. When paired with the BOOST-PSEMTHR8-097 motherboard and an MSP430 Launchpad, users can evaluate a multiple-port PSE system.

The full PoE Evaluation ecosystem includes the following:
User guide: PDF
Not available on TI.com
Daughter card

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 (...)

Code example or demo

SLVC790 TPS23882 PoE MSP430 Reference Code for Basic Applications

Supported products & hardware

Supported products & hardware

Products
Power sourcing equipment
TPS23882 Type-3, 2-pair, 8-channel PoE PSE controller with SRAM and 200-mΩ RSENSE
GUI for evaluation module (EVM)

SLVC772 TPS2388x EVM GUI

Supported products & hardware

Supported products & hardware

Products
Power sourcing equipment
TPS23880 4-pair, type-4, 8-channel PoE PSE with programmable SRAM TPS23881 4-pair, type-4, 8-channel PoE PSE with 200-mΩ RSENSE  TPS23882 Type-3, 2-pair, 8-channel PoE PSE controller with SRAM and 200-mΩ RSENSE TPS23882B Type-3, two-pair, 8-channel PoE PSE controller with autonomous mode, SRAM and 200-mΩ RSENSE
Hardware development
Evaluation board
BOOST-PSEMTHR8-097 TPS23882 Type-3, 30W, 2-pair, PSE motherboard for 8-port PSE systems
Daughter card
TPS23880EVM-008 TPS23880 EVM daughter card for IEEE 802.3bt-ready PoE PSE applications TPS23881EVM-008 TPS23881 daughter card for IEEE 802.3bt ready PoE PSE applications TPS23882B1EVM-008 TPS23882B daughter card type-3, 30-W, two-pair, eight-port system PSE TPS23882EVM-008 TPS23882 Type-3, 30W, 2-pair, PSE daughter card for 8-port PSE systems
Development kit
BOOST-PSEMTHR-007 TPS2388x motherboard for IEEE 802.3bt-ready PoE PSE applications
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs

TIDA-050026-23882 — 24-port (PoE 2, 2-pair) power sourcing equipment reference design for multi-port applications ;

This reference design showcases a Type-3, 30W, 2-Pair 24-port Ethernet switch for Power over Ethernet (PoE) applications which can send up to 30W per port for IEEE 802.3bt Type 3 applications and up to 60W per port for non-standard applications. Based on the MSP430F523x family, TI's TPS2388x (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
VQFN (RTQ) 56 Ultra Librarian

Ordering & quality

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  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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