Inicio Gestión de la energía Circuitos integrados de alimentación a través de Ethernet (PoE) Equipos de alimentación
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Gestión de la energía
Circuitos integrados de alimentación a través de Ethernet (PoE)
Equipos de alimentación

TPS23881

ACTIVO

4 pares, de tipo 4, 8 canales PoE, PSE con 200 mΩ, RSENSE

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TPS23881

ACTIVO
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Detalles del producto

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, 802.3bt Type 4 FET External MPS method DC Disconnect Pair control 2-Pair Alt A, 4-Pair 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, 802.3bt Type 4 FET External MPS method DC Disconnect Pair control 2-Pair Alt A, 4-Pair 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 or Type 4 Power over Ethernet applications
  • Eight independent PSE channels
  • Compatible with TI’s FirmPSE system firmware
  • SRAM Programmable memory
  • Programmable power limiting accuracy ±2.5%
  • 200-mΩ current sense resistor
  • Legacy PD capacitance measurement
  • Selectable 2-pair or 4-pair port power allocations
    • 15.4 W, 30 W, 45 W, 60 W, 75 W or 90 W
  • Single and dual signature PD compatibility
  • 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
  • Inrush and operational foldback protection
  • Flexible processor controlled operating modes
    • Auto, semi auto and manual / diagnostic
  • Per port voltage monitoring and telemetry
  • –40°C to +125°C temperature operation
  • Ultra Low Alpha (ULA) packaging (TPS23881A)
  • IEEE 802.3bt PSE solution for PoE 2 Type 3 or Type 4 Power over Ethernet applications
  • Eight independent PSE channels
  • Compatible with TI’s FirmPSE system firmware
  • SRAM Programmable memory
  • Programmable power limiting accuracy ±2.5%
  • 200-mΩ current sense resistor
  • Legacy PD capacitance measurement
  • Selectable 2-pair or 4-pair port power allocations
    • 15.4 W, 30 W, 45 W, 60 W, 75 W or 90 W
  • Single and dual signature PD compatibility
  • 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
  • Inrush and operational foldback protection
  • Flexible processor controlled operating modes
    • Auto, semi auto and manual / diagnostic
  • Per port voltage monitoring and telemetry
  • –40°C to +125°C temperature operation
  • Ultra Low Alpha (ULA) packaging (TPS23881A)

The TPS23881 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.

The TPS23881 improves on the TPS23880 with reduced current sense resistors, more accurate programmable power limiting, capacitance measurement and the ability to operate from ROM (see Device Comparison Table). The TPS23881 is also compatible with TI’s FirmPSE system firmware, which provides a fully configurable solution for controlling multiple TPS23881 devices in systems offering up to 48-ports of 4-pair PoE power.

Programmable SRAM enables in-field firmware upgradability over I 2C 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 ±2.5% accurate programmable port power limit provides the ability to expand the maximum power sourced from 90 W to upwards of 125 W. The 200-mΩ current sense resistor and external FET architecture allow designs to balance size, efficiency, thermal and solution cost requirements. 

The TPS23881 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.

The TPS23881 improves on the TPS23880 with reduced current sense resistors, more accurate programmable power limiting, capacitance measurement and the ability to operate from ROM (see Device Comparison Table). The TPS23881 is also compatible with TI’s FirmPSE system firmware, which provides a fully configurable solution for controlling multiple TPS23881 devices in systems offering up to 48-ports of 4-pair PoE power.

Programmable SRAM enables in-field firmware upgradability over I 2C 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 ±2.5% accurate programmable port power limit provides the ability to expand the maximum power sourced from 90 W to upwards of 125 W. The 200-mΩ current sense resistor and external FET architecture allow designs to balance size, efficiency, thermal and solution cost requirements. 
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  • Se encuentran disponibles el asesoramiento sobre el producto TPS23881 y la descarga del firmware más reciente. Solicitar ahora
  • El firmware del sistema FirmPSE de TI, la GUI, el protocolo de interfaz de Host y el asesoramiento sobre FirmPSE están disponibles. Solicitar ahora
  • Revisar Informe de pruebas de conformidad PoE 2 de TI para obtener confianza en la interoperabilidad con el TPS23881.

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TPS23882B ACTIVO Controlador PoE PSE de tipo 3, 2 pares y 8 canales con modo autónomo, SRAM y RSENSE de 200 mΩ Pin-to-pin for <30 W IEEE 802.3bt Type 3

Documentación técnica

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* Data sheet TPS23881 Type-4 4-Pair 8-Channel PoE 2 PSE Controller with SRAM and 200 mΩ RSENSE datasheet (Rev. E) PDF | HTML 16 may 2023
Application brief How to Load TPS2388x SRAM and Parity Code Over I2C (Rev. E) PDF | HTML 20 abr 2023
Application brief Choosing PoE PSE System Software Solutions PDF | HTML 03 ago 2021
Test report TPS23881 PoE2 Test Report 26 may 2020
Technical article The ABCs and 123s of PoE PDF | HTML 17 abr 2020
Technical article Get more out of your power supply with port power management PDF | HTML 11 nov 2019
Design guide 24-Port (4 Pair) Power Sourcing Equipment Reference Design for Multi-port Applic (Rev. A) 15 oct 2019
Analog Design Journal Challenges and solutions for PoE systems in Ethernet switches 30 sep 2019
EVM User's guide TPS23881EVM: PoE, PSE, TPS23881 Evaluation Module (Rev. A) 08 ago 2019
EVM User's guide TPS23881EVM: PoE, PSE, TPS23881 Evaluation Module 24 abr 2019

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

PSEMTHR24EVM-081 — Placa base para sistema PSE de 24 puertos compatible con IEEE 802.3bt

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.

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Tarjeta secundaria

PSEMCUDAUEVM-082 — Tarjeta secundaria MCU para sistema PSE de 24 puertos compatible con IEEE 802.3bt

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 (...)

No disponible en TI.com
Tarjeta secundaria

TPS23881EVM-008 — Tarjeta secundaria TPS23881 para aplicaciones PSE de PoE compatibles con IEEE 802.3bt

TPS23881EVM-008 is the daughter card to evaluate the TPS23881 which is a 4-pair, type-4, 8-channel Power-over-Ethernet (PoE) PSE with 200mΩ sense resistor. This daughter card provides evaluation and reference circuitry for the TPS23881 which is suitable for high power PSE applications such as (...)

Guía del usuario: PDF
No disponible en TI.com
Tarjeta secundaria

TPS23881EVM-083 — Tarjeta secundaria PSE compatible con IEEE 802.3bt para sistema PSE de 24 puertos

TPS23881EVM-008 is a 24-port (48-channel) daughter card to evaluate the TPS23881 which is a 4-pair, type-4, 8-channel Power-over-Ethernet (PoE) PSE with 200mΩ sense resistor. This daughter card provides evaluation and reference circuitry for the TPS23881 in high port count applications such (...)

No disponible en TI.com
Kit de desarrollo

BOOST-PSEMTHR-007 — Placa base TPS2388x para aplicaciones PoE PSE preparadas para IEEE 802.3bt

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.

Guía del usuario: PDF
No disponible en TI.com
Ejemplo de código o demostración

SLVC771 — TPS23881 PoE MSP430 Reference Code for Basic Application

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Equipos de alimentación
TPS23881 — 4 pares, de tipo 4, 8 canales PoE, PSE con 200 mΩ, RSENSE
Desarrollo de hardware
Kit de desarrollo
BOOST-PSEMTHR-007 — Placa base TPS2388x para aplicaciones PoE PSE preparadas para IEEE 802.3bt
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GUI para el módulo de evaluación (EVM)

SLVC772 — TPS2388x EVM GUI

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Productos y hardware compatibles

Productos y hardware compatibles

Productos
Equipos de alimentación
TPS23880 — PSE de 4 pares, tipo 4, 8 canales, PoE con SRAM programable TPS23881 — 4 pares, de tipo 4, 8 canales PoE, PSE con 200 mΩ, RSENSE TPS23882 — Controlador PoE PSE de tipo 3, de 2 pares y 8 canales con SRAM y Rsense de 200 mΩ TPS23882B — Controlador PoE PSE de tipo 3, 2 pares y 8 canales con modo autónomo, SRAM y RSENSE de 200 mΩ
Desarrollo de hardware
Placa de evaluación
BOOST-PSEMTHR8-097 — Placa base PSE TPS23882 tipo 3, de 30 W y 2 pares para sistemas PSE de 8 puertos
Tarjeta secundaria
TPS23880EVM-008 — Tarjeta secundaria de EVM TPS23880 para aplicaciones PSE de PoE compatibles con IEEE 802.3bt TPS23881EVM-008 — Tarjeta secundaria TPS23881 para aplicaciones PSE de PoE compatibles con IEEE 802.3bt TPS23882B1EVM-008 — Tarjeta secundaria TPS23882B, PSE tipo 3, de 30 W, 2 pares, con sistema de 8 puertos TPS23882EVM-008 — Tarjeta secundaria PSE TPS23882 tipo 3, de 30 W y 2 pares para sistemas PSE de 8 puertos
Kit de desarrollo
BOOST-PSEMTHR-007 — Placa base TPS2388x para aplicaciones PoE PSE preparadas para IEEE 802.3bt
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Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de 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 (...)
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Diseños de referencia

TIDA-050026-23881 — Diseño de referencia de equipos de fuente de alimentación de 24 puertos (PoE 2, 4 pares) para aplica

This reference design showcases a Type-4 (PoE 2, 4-Pair) 24-port Ethernet switch for Power over Ethernet (PoE) applications which can send up to 90W per port for for IEEE 802.3bt (PoE 2) applications and up to 120W per port for non-standard applications. Based on the MSP430F523x family, our (...)
Design guide: PDF
Esquema: PDF
Paquete Pasadores Descargar
VQFN (RTQ) 56 Ver opciones
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Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

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