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Silabs Si3471 90W完全自主以太网供电(PoE)解决方案

Silabs公司的Si3471是完全自主以太网供电(PoE)的供电设备(PSE)器件.完全和IEEE 802.3bt兼容,并和 IEEE 802.3af与802.3at兼容.最适合用于PSE中跨和不需要主MCU的集电器.Si3471集成了IEEE要求的供电设备(PD)检测和分类功能的以太网端口.此外,它还具有采用DC检测算法和功能强大的多点检测算法的供电设备(PD)断开.智能保护电路包括输入欠压检测,输出电流限制和短路保护.Si3471能自主工作,不需要外接主MCU或MCU控制,所有的电源重置和欠压复位电路都在器件内部.工作温度–40℃ 到+85℃,38引脚 5 x 7 mm QFN封装(RoHS兼容),主要用在IEEE 802.3af, 802.3at和802.3bt供电设备(PSE),以太供电集电器,单端口中跨,以太网交换机供电,IP电话系统,智能电网交换,加固和工业交换. 中电网为您整理如下详细资料,本文介绍了Si3471A主要特性,功能框图,应用框图以及90W以态网端口评估板EVB主要特性,包括基板和子板的电路图表,材料清单和PCB设计图.

The Si3471 is a fully autonomous Power over Ethernet (PoE) Power Sourcing Equipment (PSE) device. It is fully IEEE 802.3bt compliant and compatible with IEEE 802.3af and 802.3at. It is optimized for use in PSE mid-spans and injectors that do not require a host or MCU. The Si3471 integrates one Ethernet port with the IEEE-required powered device (PD) detection and classification functionality. In addition, it features powered device (PD) disconnect using dc sense algorithms and a robust multipoint detection algorithm. Intelligent protection circuitry includes input undervoltage detection, output current limit, and short-circuit protection. The Si3471 works autonomously and does not require a host or

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