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Product details

Parameters

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 open-in-new Find other Power sourcing equipment

Package | Pins | Size

VQFN (RTQ) 56 64 mm² 8 x 8 open-in-new Find other Power sourcing equipment

Features

  • 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

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Description

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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Download
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

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 9
Type Title Date
* Datasheet TPS23882 Type-3 2-Pair 8-Channel PoE 2 PSE Controller with SRAM and 200 mΩ RSENSE datasheet (Rev. C) Jun. 12, 2020
User guides TPS23882 SIFOs 802.3bt Conformance Test Report Jan. 29, 2020
Technical articles Get more out of your power supply with port power management Nov. 11, 2019
Application notes Challenges and solutions for PoE systems in Ethernet switches Sep. 30, 2019
Application notes How to Load TPS2388x SRAM and Parity Code over I2C (Rev. C) Sep. 17, 2019
User guides TPS23882EVM: PoE, PSE, TPS23882 Evaluation Module Jun. 24, 2019
Technical articles Mutual ID and its effect on backwards compatibility Nov. 07, 2014
Technical articles Simplify your PCB layout - When 2 is better than 6 Sep. 19, 2014
Technical articles Proper Detection is Important, No Fooling! Sep. 05, 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
199
Description
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 (...)
Features
  • 8 port PoE PSE system
  • Highly flexible system with configurable GUI and host interface
  • Low-cost solution
  • IEEE 802.3bt ready
EVALUATION BOARDS Download
document-generic User guide
Description
The PSEMTHR24EVM-081 mother board features 24 port 2pair/4pair PSE system. When paired with the TPS23881EVM-083 48-channel 4-Pair (90W) PSE daughter card or TPS23882EVM-084 24-channel 2-Pair (30W) PSE daughter card and PSEMCUDAUEVM-082 MCU daughter card (sold separately), users can evaluate this (...)
Features
  • 24 port PoE PSE system and expandable to 48 ports
  • Highly flexible system with configurable GUI and host interface
  • Multiport power management
  • IEEE802.3bt compliance
  • Mutiple power supplies
  • Supporting Legacy PD
DAUGHTER CARDS Download
document-generic User guide
199
Description
When paired with the TPS23881EVM-083 48-channel 4-Pair (90W) PSE daughter card or TPS23882EVM-084 24-channel 2-Pair (30W) PSE daughter card and PSEMTHR24EVM-081 mother board (sold separately), users can evaluate a multiple-port PSE system.  The MCU daughter card specifically enables the (...)
Features
  • 24 port PoE PSE system and expandable to 48 ports
  • Highly flexible system with configurable GUI and host interface
  • Multiport power management
  • IEEE 802.3bt compliance
  • Mutiple power supplies
  • Supporting Legacy PD
DAUGHTER CARDS Download
document-generic User guide
Description
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:
Features
  • 8 port PoE PSE system
  • Highly flexible system with configurable GUI and host interface
  • Low-cost solution
  • IEEE 802.3bt ready
DAUGHTER CARDS Download
Description
The TPS23882EVM-084 daughter card features an 8 channel, IEEE 802.3bt ready (Type-3, 30W) 2-Pair PSE controller. When paired with the PSEMTHR24EVM-081 motherboard and PSEMCUDAUEVM-082 MCU daughter card (sold separately), users can evaluate a multiple-port PSE system.

The full PoE Evaluation (...)
Features
  • 24 port PoE PSE system and expandable to 48 ports through edge connectors
  • Highly flexible system with configurable GUI and host interface
  • Multiport power management
  • IEEE 802.3bt ready
  • Mutiple power supplies
  • Supporting Legacy PD
GUIS FOR EVALUATION MODULES (EVM) Download
SLVC772B.ZIP (85157 KB)

Software development

CODE EXAMPLES & DEMOS Download
SLVC790.ZIP (1143 KB)

Design tools & simulation

SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

REFERENCE DESIGNS Download
24-port (PoE 2, 2-pair) power sourcing equipment reference design for multi-port applications
TIDA-050026-23882 — 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 FirmPSE (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
QFN (RTQ) 56 View options

Ordering & quality

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