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TPS2388

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TPS2388

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PoE standards supported 802.3at Type 1 (802.3af), 802.3at Type 2 MPS method DC Disconnect Features Current Limit with Foldback, Fast shutdown, Multi Level Port Priority, Over Current Reporting, Over Temp Reporting, Port remapping, Programmable ICUT Number of PSE ports 8 Pair control 2-Pair Alt A Vin (max) (V) 57 Vin (min) (V) 44 FET External ILIM Programmable Operating temperature range (°C) -40 to 125 Rating Catalog
PoE standards supported 802.3at Type 1 (802.3af), 802.3at Type 2 MPS method DC Disconnect Features Current Limit with Foldback, Fast shutdown, Multi Level Port Priority, Over Current Reporting, Over Temp Reporting, Port remapping, Programmable ICUT Number of PSE ports 8 Pair control 2-Pair Alt A Vin (max) (V) 57 Vin (min) (V) 44 FET External ILIM Programmable Operating temperature range (°C) -40 to 125 Rating Catalog
VQFN (RTQ) 56 64 mm² (8 mm × 8 mm)
  • Fully IEEE 802.3at compliant
  • Port Re-Mapping
  • 1- and 3-bit fast port shutdown input
  • “Never Fooled” 4-point detection
  • Type 1 and type 2 PD classification
  • Programmable current limit with foldback
  • DC disconnect detection
  • Flexible processor controlled operating modes
    • Semiauto
    • Manual
  • 14-bit port current and voltage monitoring
    • 100ms rolling port current averaging
    • 2% current sensing accuracy
    • 0.255Ω sense resistor with kelvin sense
  • I2C communication
    • I2C watchdog for failsafe operation
    • 8- and 16-bit access mode selectable
  • –40°C to 125°C temperature operation
  • 56-lead VQFN package
  • Fully IEEE 802.3at compliant
  • Port Re-Mapping
  • 1- and 3-bit fast port shutdown input
  • “Never Fooled” 4-point detection
  • Type 1 and type 2 PD classification
  • Programmable current limit with foldback
  • DC disconnect detection
  • Flexible processor controlled operating modes
    • Semiauto
    • Manual
  • 14-bit port current and voltage monitoring
    • 100ms rolling port current averaging
    • 2% current sensing accuracy
    • 0.255Ω sense resistor with kelvin sense
  • I2C communication
    • I2C watchdog for failsafe operation
    • 8- and 16-bit access mode selectable
  • –40°C to 125°C temperature operation
  • 56-lead VQFN package

The TPS2388 is an 8-channel power source equipment (PSE) controller engineered to insert power onto Ethernet cable according to IEEE 802.3at-2012 standard (or 802.3at). The PSE controller can detect powered devices (PDs) that have a valid signature, determine the power requirements according to the classification, and apply power through either one (Type -1) or two-event (Type-2) physical classification. The TPS2388 also has the flexibility to support UPoE and other non-standard loads.

The Port remapping and the device pinout allow designers to enable 2-layer PCB designs and simplify software migration from previous generation PSE devices. The external FET architecture allows designers to further balance size, efficiency, thermal, and solution cost requirements. The current foldback reduces thermal stress on the external MOSFETs during startup and overload conditions allowing the use of cheaper FETs.

The Fast Shutdown (OSS) input provides up to eight levels of per port shutdown priority for applications that require the immediate disabling of multiple ports.

The TPS2388 is an 8-channel power source equipment (PSE) controller engineered to insert power onto Ethernet cable according to IEEE 802.3at-2012 standard (or 802.3at). The PSE controller can detect powered devices (PDs) that have a valid signature, determine the power requirements according to the classification, and apply power through either one (Type -1) or two-event (Type-2) physical classification. The TPS2388 also has the flexibility to support UPoE and other non-standard loads.

The Port remapping and the device pinout allow designers to enable 2-layer PCB designs and simplify software migration from previous generation PSE devices. The external FET architecture allows designers to further balance size, efficiency, thermal, and solution cost requirements. The current foldback reduces thermal stress on the external MOSFETs during startup and overload conditions allowing the use of cheaper FETs.

The Fast Shutdown (OSS) input provides up to eight levels of per port shutdown priority for applications that require the immediate disabling of multiple ports.
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TPS23881 正在供货 具有 200mΩ RSENSE 的 4 线对、4 类、8 通道 PoE PSE  This product is an IEEE802.3bt-ready PSE controller.

技术文档

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 TPS2388 IEEE 802.3at 8-Channel Power-over-Ethernet PSE Controller 数据表 (Rev. B) PDF | HTML 2026-10-1
设计指南 适用于多端口应用的 24 端口（4 线对）电源设备参考设计 PDF | HTML PDF | HTML 2026-4-9
设计指南 SIFOs 802.3at Conformance Report, v 4.1.05, TPS2388 2017-8-23
应用手册 TPS23861 Power-On Considerations 2015-7-21

设计与开发

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评估板

TPS2388EVM-612 — 适用于 IEEE802.3at PoE PSE 应用的 TPS2388 评估模块

TPS2388EVM-612 配有 8 通道 TPS2388，后者是符合 IEEE 802.3at 标准的 PoE PSE 控制器。该 EVM 由一个主板 (TPS2388EVM-612) 和包含一个 TPS2388 器件的子板 (TPS2388EVM-016) 组成。TPS2388EVM-612 为 TPS2388EVM-016、MSP-EXP430G2 (LaunchPad™) 和 USB2ANY（USB 接口适配器）提供了一个多端口基础平台接口。


需要 IEEE802.3bt 就绪型 PSE 控制器？查看 TPS23880。
用户指南: PDF
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代码示例或演示

SLUC636 — TPS2388 PoE MSP430 Reference Code for Basic Applications

支持的产品和硬件
代码示例或演示

SLUC640 — TPS2388 PoE MSP430 Reference Code for Multi-Port Power Management Applications

支持的产品和硬件
评估模块 (EVM) 用 GUI

SLUC642 — TPS2388EVM GUI

支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
VQFN (RTQ) 56 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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