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TPS23770

ACTIVO

PD de PoE de clase 3 con controlador CC-CC integrado de retorno y umbral UVLO heredado

Detalles del producto

PoE standards supported 802.3at Type 1 (802.3af) PD power level 13W DC/DC control PD and DC/DC Vin (max) (V) 67 Vin (min) (V) 0 PoE current limit (min) (mA) 405 PoE inrush limit (mA) (typ) (A) 0.14 rDS(on) per FET (typ) (mΩ) 600 Features Error amplifier, Thermal shutdown Fault response Auto Retry Operating temperature range (°C) -40 to 85 Rating Catalog
PoE standards supported 802.3at Type 1 (802.3af) PD power level 13W DC/DC control PD and DC/DC Vin (max) (V) 67 Vin (min) (V) 0 PoE current limit (min) (mA) 405 PoE inrush limit (mA) (typ) (A) 0.14 rDS(on) per FET (typ) (mΩ) 600 Features Error amplifier, Thermal shutdown Fault response Auto Retry Operating temperature range (°C) -40 to 85 Rating Catalog
HTSSOP (PWP) 20 41.6 mm² (6.5 mm × 6.4 mm)
  • Complete 802.3af PoE Interface
    • Features derived from the TPS2375
    • 100 V, 0.6 Internal Pass MOSFET
    • Standard and Legacy UVLO Choices
    • Fixed 140 mA Inrush Limit
  • Primary Side DC/DC Converter Control
    • Minimum External Component Count
    • Current Mode Control
    • Isolated and Non-Isolated Topologies
    • Programmable Operating Frequency
    • Current Sense Leading-edge Blanking
    • 50% Duty Cycle Limiting
    • Voltage Output Error Amplifier
  • Internal PoE and Converter Sequencing
  • Industry-Standard 20 Lead Package
  • Industrial Temperature Range, -40°C to 85°C
  • APPLICATIONS
    • All PoE PD Devices Including:
      • Wireless Access Points
      • VoIP Phones
      • Security Cameras

PowerPAD is a trademark of Texas Instruments.

  • Complete 802.3af PoE Interface
    • Features derived from the TPS2375
    • 100 V, 0.6 Internal Pass MOSFET
    • Standard and Legacy UVLO Choices
    • Fixed 140 mA Inrush Limit
  • Primary Side DC/DC Converter Control
    • Minimum External Component Count
    • Current Mode Control
    • Isolated and Non-Isolated Topologies
    • Programmable Operating Frequency
    • Current Sense Leading-edge Blanking
    • 50% Duty Cycle Limiting
    • Voltage Output Error Amplifier
  • Internal PoE and Converter Sequencing
  • Industry-Standard 20 Lead Package
  • Industrial Temperature Range, -40°C to 85°C
  • APPLICATIONS
    • All PoE PD Devices Including:
      • Wireless Access Points
      • VoIP Phones
      • Security Cameras

PowerPAD is a trademark of Texas Instruments.

The TPS23750 integrates the functionality of the TPS2375 with a primary side dc/dc PWM controller. The designer can create a front-end solution for PoE-PD applications with minimum external components. The TPS23770 is identical to the TPS23750 with the exception of the undervoltage lockout turn-on voltage, which is compatible with legacy systems.

The PoE front end has all the necessary IEEE 802.3af functions including detection, classification, undervoltage lockout and inrush control. The PoE input switch is integrated within the TPS23750.

The dc/dc controller section is designed to support flyback, forward, and nonsynchronous low-side switch buck topologies.

The external switching MOSFET and current sense resistor provide flexibility in topology, power level, and current limit. The full-featured dc/dc controller includes programmable soft start, hiccup type fault limiting, 50% maximum duty cycle, programmable constant switching frequency, and a true voltage-output error amplifier. Additional protection features provide for robust designs.

The TPS23750 integrates the functionality of the TPS2375 with a primary side dc/dc PWM controller. The designer can create a front-end solution for PoE-PD applications with minimum external components. The TPS23770 is identical to the TPS23750 with the exception of the undervoltage lockout turn-on voltage, which is compatible with legacy systems.

The PoE front end has all the necessary IEEE 802.3af functions including detection, classification, undervoltage lockout and inrush control. The PoE input switch is integrated within the TPS23750.

The dc/dc controller section is designed to support flyback, forward, and nonsynchronous low-side switch buck topologies.

The external switching MOSFET and current sense resistor provide flexibility in topology, power level, and current limit. The full-featured dc/dc controller includes programmable soft start, hiccup type fault limiting, 50% maximum duty cycle, programmable constant switching frequency, and a true voltage-output error amplifier. Additional protection features provide for robust designs.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos Integrated 100-V IEEE 802.3af PD and DC/DC Controller datasheet (Rev. B) 7/02/2008
Nota sobre la aplicación PoE Powered Devices Debug Guidelines PDF | HTML 19/07/2021
Nota sobre la aplicación PoE PD Schematic Review Guidelines PDF | HTML 29/04/2021
Guía de selección Power Management Guide 2018 (Rev. R) 25/06/2018
Nota sobre la aplicación Designing an EMI Compliant PoE with Isolated Flyback 20/05/2008
Nota sobre la aplicación Practical Guidelines EMI Compliant PoE 27/03/2008

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

TPS23750EVM-107 — Reductor de módulo de evaluación TPS23750

The TPS23750EVM-107 evaluation module implements an IEEE 802.3af-compliant class-3 power interface and a non-isolated DC/DC switching converter using the Texas Instruments TPS23750 powered device (PD) controller in a typical power-over-Ethernet (PoE) configuration.

Guía del usuario: PDF
Productos y hardware compatibles
En inventario
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Placa de evaluación

TPS23750EVM-108 — Retorno de módulo de evaluación TPS23750

The TPS23750EVM-108 evaluation module implements an IEEE 802.3af-compliant class-3 power interface and a DC/DC switching converter using the Texas Instruments TPS23750 powered device (PD) controller in a typical power-over-Ethernet (PoE) configuration.

Guía del usuario: PDF
Productos y hardware compatibles
En inventario
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No disponible
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HTSSOP (PWP) 20 Ultra Librarian

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