TPS23880
- IEEE 802.3bt PSE solution for PoE 2 Type 3 or Type 4 Power Over Ethernet applications
- Eight independent PSE channels
- SRAM Programmable memory
- Programmable power limiting accuracy ±3%
- Selectable 2-pair or 4-pair port power allocations
- 15.4 W, 30 W, 45 W, 60 W, 75 W or 90 W
- Single and dual signature PD compatibility
- Dedicated 14-bit integrating current ADC per port
- Inherent filtering
- Noise immune MPS for DC disconnect
- 2% Current sensing accuracy
- 100-ms Rolling port current averaging
- 1- or 3-Bit fast port shutdown input
- Auto-class discovery and power measurement
- Never Fooled 4-Point detection
- Inrush and operational foldback protection
- 425-mA and 1.25-A Selectable current limits
- Port re-mapping
- 8-Bit or 16-bit I2C communication
- Flexible processor controlled operating modes
- Auto, semi auto and manual / diagnostic
- Per Port voltage monitoring and telemetry
- –40°C to +125°C Temperature operation
The TPS23880 is an 8-channel power sourcing equipment (PSE) controller engineered to insert power onto Ethernet cables in accordance with the IEEE 802.3bt standard. The eight individual power channels can be configured in any combination of 2-Pair (1-channel) or 4-Pair (2-channels) PoE Ports. The PSE controller can detect powered devices (PDs) that have a valid signature, complete mutual identification, and apply power.
Programmable SRAM enables in-field firmware upgradability over I2C to ensure IEEE compliance and interoperability with the latest PoE enabled devices. Dedicated per port ADCs provide continuous port current monitoring and the ability to perform parallel classification measurements for faster port turn on times. A ±3% accurate programmable port power limit provides the ability to expand the maximum power sourced above 90 W without exceeding 100 W while also making system level power management control more easy to implement and reliable. The Fast Shutdown (OSS) input provides up to eight levels of per port shutdown priority for applications requiring immediate disabling of multiple ports. The 255-mΩ current sense resistor and external FET architecture allow designs to balance size, efficiency, thermal and solution cost requirements.
Port remapping and pin-to-pin compatibility with the TPS2388, TPS23881, and TPS23882 devices eases migration from previous generation PSE designs and enables interchangeable 2-layer PCB designs to accommodate different system PoE power configurations.
技术文档
| 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 | TPS23880 Type-4 4-Pair 8-Channel PoE 2 PSE Controller with Programmable SRAM 数据表 (Rev. G) | PDF | HTML | 2020-8-14 | ||
| 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 | ||
| 应用简报 | 如何通过 I2C 加载 TPS2388x SRAM 和奇偶校验代码 (Rev. E) | PDF | HTML | 英语版 (Rev.E) | PDF | HTML | 2023-4-27 | |
| 应用手册 | TPS23880连接HFC供电的设计考量 | 2021-8-9 | ||||
| 测试报告 | TPS23880 PoE2 Test Report | 2020-5-26 | ||||
| 技术文章 | Key considerations for designing with the new PoE standard | PDF | HTML | 2018-7-16 | |||
| 技术文章 | The new PoE standard: It’s almost here | PDF | HTML | 2018-6-6 | |||
| 应用手册 | Beyond BT High-Power PoE Solution using the TPS23880 and TPS2372-4 | 2018-4-17 | ||||
| 应用手册 | TPS23861 Power-On Considerations | 2015-7-21 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
BOOST-PSEMTHR-007 — 适用于 IEEE 802.3bt 就绪型 PoE PSE 应用的 TPS2388x 主板
BOOST-PSEMTHR-007 是 TPS23880 和 TPS23881 PSE 控制器的基板。该基板包含四个 2 线对端口，可用于为 IEEE 802.3at 应用发送高达 30W/端口的功率；此外，还有两个 4 线对端口，可用于为 IEEE 802.3bt 应用发送高达 90W/端口的功率。
TPS23880EVM-008 — 适用于 IEEE 802.3bt 就绪型 PoE PSE 应用的 TPS23881 EVM 子卡
TPS23880EVM-008 是用于评估 TPS23880 的子卡，TPS23880 是一款带有可编程 SRAM 的 4 线对 4 类 8 通道以太网供电 (PoE) PSE。该子卡可为适用于高功率 PSE 应用（如园区和分支交换机、网络录像机）的 TPS23880 提供评估和参考电路。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VQFN (RTQ) | 56 | Ultra Librarian |
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