[原创] Silabs Si3406x系列以太网供电+(PoE+)解决方案

Silabs公司的Si3406x系列是符合IEEE 802.3要求的全集成式PoE+ PD 接口和带晶体管旁路以及睡眠,唤醒和 LED 驱动器的高效率开关稳压器,集成了以太网供电+（PoE+）型供电设备(PD) 应用中所需的所有电源管理和控制功能,完全支持 IEEE 802.3at 规范,能够进行单个或两个事件分类.主要用在 IP 语音电话,无线接入点,安保和监察 IP 摄像机,照明设备,销售点终端机,以太网设备和网络设备.本文介绍了Si3406x系列主要特性,框图,应用电路以及评估板Si34061ISOC4-KIT主要特性,电路图,材料清单和PCB设计图.

The Si3406x family integrates all power management and control functions required ina Power-over-Ethernet Plus (PoE+) powered device (PD) application. These devicesconvert the high voltage supplied over the 10／100／1000BASE-T Ethernet connection toa regulated, low-voltage output supply. The optimized architecture of this device familyminimizes the solution footprint and external BOM cost and enables the use of low-cost

external components while maintaining high performance. The Si3406x family integrates the required diode bridges and transient surge suppressor, thus enabling directconnection of the IC to the Ethernet RJ-45 connector. The switching power FET and all associated functions are also integrated. The integrated, current mode controlledswitching regulator supports isolated or non-isolated flyback and buck converter topologies.
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