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

TPS2373

ACTIVO

Interfaz PD IEEE 802.3bt de PoE de alta potencia con inicio avanzado

Detalles del producto

Vin (min) (V) 8 Vin (max) (V) 57 PoE current limit (min) (mA) 1550, 1900 PoE inrush limit (mA) (typ) (A) 0.2, 0.335, 200, 335 rDS(on) per FET (typ) (mΩ) 100, 300 PoE standards supported 802.3bt Type 3, 802.3bt Type 4 PD power level 13W, 25W, 51W, 71W DC/DC control PD Only Fault response Auto Retry Features Adapter priority, Advanced startup, Automatic MPS, Non-standard POE++ compatible, PG, Primary Side Adapter Priority, Primary-side adapter priority, Programmable UVLO, Thermal shutdown Operating temperature range (°C) -40 to 125 Rating Catalog
Vin (min) (V) 8 Vin (max) (V) 57 PoE current limit (min) (mA) 1550, 1900 PoE inrush limit (mA) (typ) (A) 0.2, 0.335, 200, 335 rDS(on) per FET (typ) (mΩ) 100, 300 PoE standards supported 802.3bt Type 3, 802.3bt Type 4 PD power level 13W, 25W, 51W, 71W DC/DC control PD Only Fault response Auto Retry Features Adapter priority, Advanced startup, Automatic MPS, Non-standard POE++ compatible, PG, Primary Side Adapter Priority, Primary-side adapter priority, Programmable UVLO, Thermal shutdown Operating temperature range (°C) -40 to 125 Rating Catalog
VQFN (RGW) 20 25 mm² 5 x 5
  • IEEE 802.3bt (Draft) PD Solution for Type 3 or Type 4 PoE
  • Supports Power Levels for Type-4 ( TPS2373-4) 90-W and Type-3 ( TPS2373-3) 60-W Operation
  • Robust 100 V Hotswap MOSFET
    • TPS2373-4 (typ.): 0.1-Ω, 2.2-A Current Limit
    • TPS2373-3 (typ.): 0.3-Ω, 1.85-A Current Limit
  • Allocated Power Indicator Outputs
  • Advanced Startup for DC-DC
    • Simplifies Downstream DC-DC Design
    • Compliant to PSE Inrush
  • Automatic Maintain Power Signature (MPS)
    • Auto-adjust MPS for Type 1-2 or 3-4 PSE
    • Supports Ultra-Low Power Standby Modes
  • Primary Adapter Priority Input
  • Supports PoE++ PSE
  • -40°C to 125°C Junction Temperature Range
  • 20-lead VQFN Package
  • IEEE 802.3bt (Draft) PD Solution for Type 3 or Type 4 PoE
  • Supports Power Levels for Type-4 ( TPS2373-4) 90-W and Type-3 ( TPS2373-3) 60-W Operation
  • Robust 100 V Hotswap MOSFET
    • TPS2373-4 (typ.): 0.1-Ω, 2.2-A Current Limit
    • TPS2373-3 (typ.): 0.3-Ω, 1.85-A Current Limit
  • Allocated Power Indicator Outputs
  • Advanced Startup for DC-DC
    • Simplifies Downstream DC-DC Design
    • Compliant to PSE Inrush
  • Automatic Maintain Power Signature (MPS)
    • Auto-adjust MPS for Type 1-2 or 3-4 PSE
    • Supports Ultra-Low Power Standby Modes
  • Primary Adapter Priority Input
  • Supports PoE++ PSE
  • -40°C to 125°C Junction Temperature Range
  • 20-lead VQFN Package

The TPS2373 contains all of the features needed to implement an IEEE802.3at or IEEE802.3bt (draft) (Type 1-4) powered device (PD). The low internal switch resistance allows the TPS2373-4 and TPS2373-3 to support high power applications up to 90 W and 60 W respectively. Assuming 100-meter CAT5 cable, this translates into 71.3 W and 51 W at PD input.

The TPS2373 operates with enhanced features.

The Advanced Startup function for DC-DC results in a simple, flexible, and minimal system cost solution, while ensuring that IEEE802.3bt (draft) startup requirements are met. It helps to reduce the size of the low voltage bias capacitor considerably. It also allows long DC-DC converter soft-start period and enables the use of a low-voltage PWM controller.

The Automatic MPS function enables applications requiring very low power standby modes. The TPS2373 automatically generates the necessary pulsed current to maintain the PSE power. An external resistor is used to enable this functionality and to program the MPS pulsed current amplitude.

The TPS2373 contains all of the features needed to implement an IEEE802.3at or IEEE802.3bt (draft) (Type 1-4) powered device (PD). The low internal switch resistance allows the TPS2373-4 and TPS2373-3 to support high power applications up to 90 W and 60 W respectively. Assuming 100-meter CAT5 cable, this translates into 71.3 W and 51 W at PD input.

The TPS2373 operates with enhanced features.

The Advanced Startup function for DC-DC results in a simple, flexible, and minimal system cost solution, while ensuring that IEEE802.3bt (draft) startup requirements are met. It helps to reduce the size of the low voltage bias capacitor considerably. It also allows long DC-DC converter soft-start period and enables the use of a low-voltage PWM controller.

The Automatic MPS function enables applications requiring very low power standby modes. The TPS2373 automatically generates the necessary pulsed current to maintain the PSE power. An external resistor is used to enable this functionality and to program the MPS pulsed current amplitude.

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TPS23730 ACTIVO PD de PoE 2 IEE 802.3bt, tipo 3, clase 1-6, con controlador CC-CC de alta eficiencia This product integrates the DC-DC controller and is recommended for up to 51W applications.
TPS23881 ACTIVO 4 pares, de tipo 4, 8 canales PoE, PSE con 200 mΩ, RSENSE This product is an IEEE802.3bt-ready PSE controller.

Documentación técnica

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Tipo Título Fecha
* Data sheet TPS2373 High-Power PoE PD Interface with Advanced Startup datasheet (Rev. C) PDF | HTML 07 nov 2018
EVM User's guide TPS2373-4EVM-758 Evaluation Module User's Guide (Rev. B) PDF | HTML 25 jul 2023
Application note PoE Powered Devices Debug Guidelines PDF | HTML 19 jul 2021
Application note PoE PD Schematic Review Guidelines PDF | HTML 29 abr 2021
Application brief How to Identify Allocated Power at PD Through TPH, TPL, and BT Pins PDF | HTML 21 jul 2020
Technical article The ABCs and 123s of PoE PDF | HTML 17 abr 2020
Technical article Delivering a smooth transition from AC to PoE power PDF | HTML 01 nov 2018
Technical article The new PoE standard: It’s almost here PDF | HTML 06 jun 2018
Technical article Less (standby) power and more light PDF | HTML 10 may 2018
Application note Beyond BT High-Power PoE Solution using the TPS23880 and TPS2372-4 17 abr 2018
Technical article Would you like a logo to go with your PoE system? PDF | HTML 16 mar 2018

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

TPS2373-4EVM-758 — Módulo de evaluación TPS2373-4 para aplicaciones PD de PoE IEEE802.3bt

The TPS2373 evaluation module (TPS2373-4EVM-758) contains evaluation and reference circuitry for the TPS2373, which is a IEEE802.3bt PoE PD controller suitable for high power PoE PD applications. The EVM is designed with a 5V active clamp forward isolated converter for high efficiency, 70W PD (...)

Guía del usuario: PDF | HTML
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 (...)
Diseños de referencia

PMP21318 — Diseño de referencia de convertidor de avance de abrazadera activa para dispositivos alimentados (PD

Este diseño de referencia presenta un convertidor directo de abrazadera activa tipo 4, clase 8, de 71 W para dispositivos alimentados (PD) a través de alimentación a través de Ethernet (PoE). El controlador PD TPS2373-4 proporciona detección y clasificación y también enciende el controlador de (...)
Test report: PDF
Diseños de referencia

PMP20878 — Diseño de referencia de convertidor de avance de fijación activa de voltaje aislado PoE de clase 8 (

This reference design is a high power PoE Powered Device (PD) plus active clamp forward converter.  The TPS2373 high power PD controller EVM (TPS2373-4EVM-758) provides all functions necessary to implement an IEEE802.3bt-ready PD.  This is paired up with an active clamp forward converter (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP21103 — Diseño de referencia de alimentación PoE PD de clase 5 (12 V/2,5 A) con transición suave a auxiliar

This reference design implements an IEEE802.3bt compliant Class 5 Power over Ethernet (PoE) Powered Device (PD) with smooth transition between the PoE input and an auxiliary supply connected to the output.  The design consists of a 12-V/2.5-A active clamp forward converter utilizing the (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

TIDA-050023 — Diseño de referencia de dispositivo con alimentación PoE de convertidor de retorno compatible con ti

This design showcases a low cost, Type-3, Class 6, 51W flyback converter for powered devices through Power over Ethernet. The TPS2373-3 PD controller provides detection and classification while also powering up the LM51551-Q1 PWM controller through its advanced startup feature. This design takes in (...)
Design guide: PDF
Esquema: PDF
Paquete Pasadores Descargar
VQFN (RGW) 20 Ver opciones

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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