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TPS23750

AKTIV

PoE-PD der Klasse 3 mit DC/DC-Flyback-Controller

Produktdetails

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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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt Integrated 100-V IEEE 802.3af PD and DC/DC Controller datasheet (Rev. B) 07.02.2008
Anwendungshinweis PoE Powered Devices Debug Guidelines PDF | HTML 19.07.2021
Anwendungshinweis PoE PD Schematic Review Guidelines PDF | HTML 29.04.2021
Auswahlhilfe Power Management Guide 2018 (Rev. R) 25.06.2018
Anwendungshinweis Lightning Surge Considerations for PoE Powered Devices 30.04.2015
EVM User's guide TPS23750 Flyback-Converter Evaluation Board - HPA108. (Rev. D) 31.03.2011
Anwendungshinweis Advanced Adapter ORing Solutions using the TPS23753 (Rev. A) 09.02.2009
Anwendungshinweis Designing an EMI Compliant PoE with Isolated Flyback 20.05.2008
Anwendungshinweis Practical Guidelines EMI Compliant PoE 27.03.2008
Weitere Dokumente TPS23750PWP Test Report 19.02.2008
Benutzerhandbuch TPS23750 High Efficiency 5V at 2.2A PoE PD Reference Design 07.03.2006
Benutzerhandbuch TPS23750 PMP1360 12V at 1A PoE PD Reference Design 07.03.2006
Anwendungshinweis Wall Adapter Powers IEEE 802.3af Powered Device 01.02.2006

Design und Entwicklung

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Evaluierungsplatine

TPS23750EVM-107 — TPS23750-Evaluierungsmodul, Abwärtswandler

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.

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Evaluierungsplatine

TPS23750EVM-108 — TPS23750 Flyback-Evaluierungsmodul

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.

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Berechnungstool

SLUC480 — PoE PD Efficiency Calculator

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