兼容IEEE802.3af标准的高功率PoE系统的设计与实现  

Design and Implementation of High-Power PoE System Compliant with IEEE802.3af Standard

作　　者：宁恋[1] 

机构地区：[1]重庆邮电大学网络控制技术与智能仪器仪表重点实验室,重庆400065

出　　处：《通信电源技术》2008年第4期50-52,56,共4页Telecom Power Technology

摘　　要：以太网供电标准IEEE802.3af定义的最大12.95W的功率限制制约了高功率网络设备的接入,鉴于此,简要介绍了IEEE802.3af标准,分析了高功率以太网供电系统的功能需求,采用MSP430F1481单片机、TPS23841以太网供电管理专用芯片和TPS2376-H,基于I2C和RS232通信规范,开发了兼容标准的最大25W的可监控高级以太网供电系统。文中重点论述了此系统的设计实现过程。12. 95 watts that IEEES02. 3af defined maximum power restricts high-power network devices＇ access, firstly IEEE 802. 3af standard was briefly introduced, the function demands of high-power PoE system were analyzed. Based on I^2C and RS232 communication criterion, adopted the MSP430F1481 MCU,TPS23841 and TPS2376-H to design 25 watts high-power and monitoring PoE system compliant with IEEE 802. 3af standard. Design and Implementation of this system were described as emphasis in this thesis.

关 键 词：以太网供电 供电设备 受电设备 TPS23841 TPS2376-H 

分 类 号：TP393.11[自动化与计算机技术—计算机应用技术]