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

TPS23754

ACTIVO

Interfaz de PoE IEEE 802.3at, alta eficiencia y controlador CC/CC

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TPS23754

ACTIVO
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Detalles del producto

Vin (min) (V) 15.7 Vin (max) (V) 57 PoE current limit (min) (mA) 850 PoE inrush limit (mA) (typ) (A) 0.14 rDS(on) per FET (typ) (mΩ) 430 PoE standards supported 802.3at Type 1 (802.3af), 802.3at Type 2 PD power level 13W, 25W DC/DC control PD and DC/DC Fault response Auto Retry Features Primary-side adapter priority, Second Gate Drive, Thermal shutdown Operating temperature range (°C) -40 to 125 Rating Catalog
Vin (min) (V) 15.7 Vin (max) (V) 57 PoE current limit (min) (mA) 850 PoE inrush limit (mA) (typ) (A) 0.14 rDS(on) per FET (typ) (mΩ) 430 PoE standards supported 802.3at Type 1 (802.3af), 802.3at Type 2 PD power level 13W, 25W DC/DC control PD and DC/DC Fault response Auto Retry Features Primary-side adapter priority, Second Gate Drive, Thermal shutdown Operating temperature range (°C) -40 to 125 Rating Catalog
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • Powers up to 30-W (Input) PDs
  • DC-DC Control Optimized for Isolated Converters
  • Supports High-Efficiency Topologies
  • Complete PoE Interface
  • Enhanced Classification per IEEE 802.3at With Status Flag
  • Adapter ORing Support
  • Programmable Frequency With Synchronization
  • Robust 100-V, 0.5-Ω Hotswap MOSFET
  • –40°C to 125°C Junction Temperature Range
  • Industry Standard PowerPAD™ HTSSOP-20
  • Powers up to 30-W (Input) PDs
  • DC-DC Control Optimized for Isolated Converters
  • Supports High-Efficiency Topologies
  • Complete PoE Interface
  • Enhanced Classification per IEEE 802.3at With Status Flag
  • Adapter ORing Support
  • Programmable Frequency With Synchronization
  • Robust 100-V, 0.5-Ω Hotswap MOSFET
  • –40°C to 125°C Junction Temperature Range
  • Industry Standard PowerPAD™ HTSSOP-20

The TPS23754 and TPS23756 devices have a combined power-over-ethernet (PoE), powered-device (PD) interface, and current-mode DC-DC controller optimized specifically for isolated converters. The PoE interface supports the IEEE 802.3at standard.

The TPS23754 and TPS23756 support a number of input voltage ORing options including highest voltage, external adapter preference, and PoE preference. These features allow the designer to determine which power source will carry the load under all conditions.

The PoE interface features the new extended hardware classification necessary for compatibility with high-power midspan power sourcing equipment (PSE) per IEEE 802.3at. The detection signature pin can also be used to force power from the PoE source off. Classification can be programmed to any of the defined types with a single resistor.

The DC-DC controller features two complementary gate drivers with programmable dead time. This simplifies the design of active-clamp forward converters or optimized gate drive for highly-efficient flyback topologies. The second gate driver may be disabled if desired for single MOSFET topologies. The controller also features internal soft start, bootstrap start-up source, current-mode compensation, and a 78% maximum duty cycle. A programmable and synchronizable oscillator allows design optimization for efficiency and eases use of the controller to upgrade existing power supply designs. Accurate programmable blanking, with a default period, simplifies the usual current-sense filter design trade-offs.

The TPS23754 device has a 15-V converter start-up while the TPS23756 device has a 9-V converter start-up. The TPS23754-1 replaces the PPD pin with a no-connect for increased pin spacing.

The TPS23754 and TPS23756 devices have a combined power-over-ethernet (PoE), powered-device (PD) interface, and current-mode DC-DC controller optimized specifically for isolated converters. The PoE interface supports the IEEE 802.3at standard.

The TPS23754 and TPS23756 support a number of input voltage ORing options including highest voltage, external adapter preference, and PoE preference. These features allow the designer to determine which power source will carry the load under all conditions.

The PoE interface features the new extended hardware classification necessary for compatibility with high-power midspan power sourcing equipment (PSE) per IEEE 802.3at. The detection signature pin can also be used to force power from the PoE source off. Classification can be programmed to any of the defined types with a single resistor.

The DC-DC controller features two complementary gate drivers with programmable dead time. This simplifies the design of active-clamp forward converters or optimized gate drive for highly-efficient flyback topologies. The second gate driver may be disabled if desired for single MOSFET topologies. The controller also features internal soft start, bootstrap start-up source, current-mode compensation, and a 78% maximum duty cycle. A programmable and synchronizable oscillator allows design optimization for efficiency and eases use of the controller to upgrade existing power supply designs. Accurate programmable blanking, with a default period, simplifies the usual current-sense filter design trade-offs.

The TPS23754 device has a 15-V converter start-up while the TPS23756 device has a 9-V converter start-up. The TPS23754-1 replaces the PPD pin with a no-connect for increased pin spacing.

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Documentación técnica

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* Data sheet TPS2375x IEEE 802.3at, High Efficiency, PoE Interface and DC-DC Controller datasheet (Rev. I) PDF | HTML 19 dic 2017
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 note Alleviating Short Circuit Thermal Concerns for PoE Powered Devices PDF | HTML 05 jun 2020
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
Technical article Flyback converters: two outputs are better than one PDF | HTML 24 nov 2016
Technical article Maximizing PoE PD efficiency on a budget PDF | HTML 10 nov 2015
Application note Lightning Surge Considerations for PoE Powered Devices 30 abr 2015
Application note Efficiency-Optimized, Synchronous Flyback, High-Power PoE Controller/Converter 17 ene 2012
User guide TPS23754EVM-383 EVM: Evaluation Module for TPS23754. (Rev. C) 28 nov 2011
Application note High Efficiency Class 4 PoE Powered Device 23 mar 2011
Application note Implementing a Buck Converter With the TPS23753A 20 sep 2010
Application note Using the TPS23753A with an External Error Amplifier 06 ago 2010
User guide TPS23754EVM-420 EVM: Evaluation Module for TPS 17 abr 2009
Application note Advanced Adapter ORing Solutions using the TPS23753 (Rev. A) 09 feb 2009
Application note PoE Powered Device for 24 VAC Building Power Applications 10 sep 2008
Application note Designing an EMI Compliant PoE with Isolated Flyback 20 may 2008
Application note Practical Guidelines EMI Compliant PoE 27 mar 2008

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

TPS23754EVM-383 — Módulo de evaluación de alta potencia con entrada de 33-57 V, salida de 12 V para TPS23754

TPS23754EVM-383 contains evaluation and reference circuitry for the TPS23754, which is a Class 4 (25.5 W) PoE PD + PWM Controller. The TPS23754 is targeted at wide Vin aplications (24 V - 60 V) in isolated converter topologies and is compliant with the IEEE 802.3 at Power over Ethernet (PoE) (...)

Guía del usuario: PDF
No disponible en TI.com
Placa de evaluación

TPS23754EVM-420 — Módulo de evaluación de alta potencia con entrada de 20-57 V, salida de 5 V para TPS23754

TPS23754EVM-420 contains evaluation and reference circuitry for the TPS23754, which is a Class 4 (25.5 W) PoE PD + PWM Controller. The TPS23754 is targeted at wide Vin aplications (24 V - 60 V) in isolated converter topologies and is compliant with the IEEE 802.3at Power over Ethernet (PoE) (...)

Guía del usuario: PDF
No disponible en TI.com
Herramienta de cálculo

SLUC480 — PoE PD Efficiency Calculator

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Dispositivos alimentados
TPS2375 — PD de PoE de clase 3 con protección de cierre TPS23750 — PD de PoE de clase 3 con controlador CC-CC de retorno TPS23751 — Interfaz de PoE IEEE 802.3at con controlador CC-CC de retorno TPS23752 — Interfaz de PoE IEEE 802.3at con controlador CC-CC de retorno y función de modo de suspensión TPS23753 — Interfaz de PoE IEEE 802.3-2005 y convertidor y controlador aislado TPS23753A — Interfaz de PoE IEEE 802.3-2005 y controlador de convertidor aislado con paso a través de ESD mejora TPS23754 — Interfaz de PoE IEEE 802.3at, alta eficiencia y controlador CC/CC TPS23754-1 — Interfaz de PoE IEEE 802.3at y controlador convertidor aislado TPS23756 — PD de PoE de clase 4 con controlador CC-CC de retorno/avance y compatibilidad con adaptador de 12 V- TPS23757 — PD de PoE de clase 3 con controlador CC-CC de retorno/avance y compatibilidad con adaptador de 12 V- TPS2376 — PD de PoE de clase 3 con umbral UVLO ajustable y protección de cierre TPS2377 — PD de PoE de clase 3 con umbral UVLO heredado y protección de cierre TPS2378 — Interfaz PD de alta potencia de PoE IEEE 802.3at con control AUX TPS23785B — PD de PoE de alta potencia y alta eficiencia y controlador CC a CC TPS2379 — Interfaz PD de alta potencia IEEE 802.3at de PoE con controlador de puerta externo
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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

PMP10288 — Diseño de referencia de convertidor de fijación activa de voltaje de clase 4 PoE (3,3 V)

The PMP10288 reference design is a Power Over Ethernet (POE) active clamp forward converter. It features the TPS23754, which is a combination of a POE Powered Device (PD) controller and PWM controller. CSD17501Q5A FETs are used for high efficiency synchronous rectification. The input accepts (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP6812 — Diseño de referencia de convertidor de retorno de Clase 4 con costo optimizado para aplicaciones PoE

This reference evaluation module, featuring the TPS23754 PoE interface and DC-to-DC controller is used for class 4 PoE applications.

The flyback topology with diode rectification results in a low-cost converter for PoE applications such as a security camera. With the appropriate BOM changes, PMP6812 (...)

Test report: PDF
Esquema: PDF
Diseños de referencia

PMP22301 — Diseño de referencia de fuente de alimentación PoE PD clase 4 (24 V/0,9 A)

This reference design utilizes a flyback converter to implement a Class 4 Power over Ethernet (PoE) poweredDevice dPD) with a 24-V/0.9-A output. The TPS23754
is a combination PD/PWM controller in one package, saving cost and space. This reference design is suited for many PoE applications such as (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP9563 — Diseño de referencia de convertidor de abrazadera activa hacia delante de Clase 4 de 12 V/2.5 A para

This reference design is a Power Over Ethernet (POE) active clamp forward converter. It features the TPS23754, which is a combination of a POE Powered Device (PD) controller and PWM controller. CSD19534Q5A FETs are used for high efficiency synchronous rectification. The input accepts standard Type (...)
Test report: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HTSSOP (PWP) 20 Ultra Librarian
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

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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