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TPS2377-1

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具有传统 UVLO 阈值和自动重试功能的 3 级 PoE PD

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TPS2377-1

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产品详情

Vin (min) (V) 0 Vin (max) (V) 57 PoE current limit (min) (mA) 405 PoE inrush limit (mA) (typ) (A) Programmable rDS(on) per FET (typ) (mΩ) 580 PoE standards supported 802.3at Type 1 (802.3af) PD power level 13W DC/DC control PD Only Fault response Auto Retry Features PG, Programmable UVLO, Thermal shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
Vin (min) (V) 0 Vin (max) (V) 57 PoE current limit (min) (mA) 405 PoE inrush limit (mA) (typ) (A) Programmable rDS(on) per FET (typ) (mΩ) 580 PoE standards supported 802.3at Type 1 (802.3af) PD power level 13W DC/DC control PD Only Fault response Auto Retry Features PG, Programmable UVLO, Thermal shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Auto-Retry After Current-Limit Fault
  • TPS2375-1: IEEE 802.3af Thresholds
  • TPS2377-1: Legacy Thresholds
  • Fully Supports IEEE 802.3af Specification
  • Integrated 0.58-Ω, 100-V, Low-Side Switch
  • 15-kV System Level ESD Capable
  • Programmable Inrush Current Control
  • Fixed 450-mA Current Limit
  • Open-Drain, Power-Good Reporting
  • Industrial Temperature Range: -40°C to 85°C
  • 8-Pin SOIC and TSSOP Packages
  • APPLICATIONS
    • VoIP Phones
    • WLAN Access Points
    • Security Cameras
    • Internet Appliances
    • POS Terminals
  • Auto-Retry After Current-Limit Fault
  • TPS2375-1: IEEE 802.3af Thresholds
  • TPS2377-1: Legacy Thresholds
  • Fully Supports IEEE 802.3af Specification
  • Integrated 0.58-Ω, 100-V, Low-Side Switch
  • 15-kV System Level ESD Capable
  • Programmable Inrush Current Control
  • Fixed 450-mA Current Limit
  • Open-Drain, Power-Good Reporting
  • Industrial Temperature Range: -40°C to 85°C
  • 8-Pin SOIC and TSSOP Packages
  • APPLICATIONS
    • VoIP Phones
    • WLAN Access Points
    • Security Cameras
    • Internet Appliances
    • POS Terminals

These easy-to-use 8-pin integrated circuits contain all of the features needed to develop an IEEE 802.3af-compliant powered device (PD). The TPS2375-1 and TPS2377-1 are second generation PDCs (PD Controllers) featuring a 100-V ratings and true open-drain, power-good function. These devices are auto-retry versions of selected TPS2375 family members. Information on the TPS2375/6/7 devices can be found on the TPS2375/6/7 data sheet (SLVS525A).

In addition to the basic functions of detection, classification, and undervoltage lockout (UVLO), these controllers include an adjustable inrush limiting feature. The TPS2375-1 has 802.3af-compliant UVLO limits, and the TPS2377-1 has legacy UVLO limits.

The TPS2375 family specifications incorporate a voltage offset of 1.5 V between its limits and the IEEE 802.3af specifications to accommodate the required input diode bridges used to make the PD polarity insensitive.

Additional resources can be found on the TI Web site www.ti.com.

These easy-to-use 8-pin integrated circuits contain all of the features needed to develop an IEEE 802.3af-compliant powered device (PD). The TPS2375-1 and TPS2377-1 are second generation PDCs (PD Controllers) featuring a 100-V ratings and true open-drain, power-good function. These devices are auto-retry versions of selected TPS2375 family members. Information on the TPS2375/6/7 devices can be found on the TPS2375/6/7 data sheet (SLVS525A).

In addition to the basic functions of detection, classification, and undervoltage lockout (UVLO), these controllers include an adjustable inrush limiting feature. The TPS2375-1 has 802.3af-compliant UVLO limits, and the TPS2377-1 has legacy UVLO limits.

The TPS2375 family specifications incorporate a voltage offset of 1.5 V between its limits and the IEEE 802.3af specifications to accommodate the required input diode bridges used to make the PD polarity insensitive.

Additional resources can be found on the TI Web site www.ti.com.
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类型 标题 下载最新的英语版本 日期
* 数据表 IEEE 802.3af PoE Powered Device Controllers With Auto-Retry 数据表 (Rev. A) 2008年 4月 25日
应用手册 PoE PD 原理图审查指南 英语版 PDF | HTML 2022年 1月 3日
应用手册 PoE Powered Devices Debug Guidelines PDF | HTML 2021年 7月 19日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
应用手册 Designing an EMI Compliant PoE with Isolated Flyback 2008年 5月 20日
应用手册 Practical Guidelines EMI Compliant PoE 2008年 3月 27日
应用手册 High Power PoE PD Using the TPS2375/77-1 2006年 2月 28日

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