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TPS2388是一款8通道电源设备(PSE)控制器,旨在根据IEEE 802.3at-2012标准(或802.3at)向以太网电缆提供电力.PSE控制器可以检测具有有效签名的通电器件(PD),根据分类确定电源要求,以及通过单事件(1类)或双事件(2类)物理分类应用电源.TPS2388还能够灵活地支持UPoE和其他非标准负载。
利用端口重映射和器件引脚,设计人员可以实现2层PCB设计并简化从上一代PSE器件进行的迁移。借助外部FET架构,设计人员可以进一步平衡尺寸,效率,散热和解决方案成本要求。电流折返可以启动和过载情况期间降低外部MOSFET上的热应力,从而允许使用较便宜的FET。
快速关断(OSS) )输入可以为要求立即禁用多个端口的应用提供多达八个级别的逐端口关断。
所有商标均为其各自所有者的财产。
| Vin (Min) (V) |
| Vin (Max) (V) |
| ICUT |
| ILIM |
| PoE Standards Supported |
| FET |
| MPS Method |
| Pair Control |
| Operating Temperature Range (C) |
| No. of PSE Ports |
| Features |
| Pin/Package |
| TPS2388 | TPS23861 | TPS23880 |
|---|---|---|
| 44 | 44 | 44 |
| 57 | 57 | 57 |
| Programmable | Programmable | Programmable |
| Programmable | Programmable | Programmable |
| 802.3at Type 1 (802.3af) 802.3at Type 2 | 802.3at Type 1 (802.3af) 802.3at Type 2 | 802.3at Type 1 (802.3af) 802.3at Type 2 802.3bt Type 3 802.3bt Type 4 |
| External | External | External |
| DC Disconnect | DC Disconnect | DC Disconnect |
| 2-Pair Alt A | 2-Pair Alt A | 2-Pair Alt A 4-Pair |
| -40 to 125 | -40 to 125 | -40 to 125 |
| 8 | 4 | 8 |
| Current Limit with Foldback Fast shutdown Multi Level Port Priority Over Current Reporting Over Temp Reporting Port remapping | Autonomous Mode Current Limit with Foldback Fast shutdown Over Current Reporting Over Temp Reporting | Auto Mode Current Limit with Foldback Fast shutdown Multi Level Port Priority Over Current Reporting Over Temp Reporting Port remapping Programmable Port Power Limiting SRAM Programmable |
| 56QFN | 28TSSOP | 56QFN |