应用与设计

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详情介绍

Circuit Protection of Ethernet -- Power over Ethernet (PoE) Ports



设计说明:

保护应用:
There are two basic ways of providing DC Power over an Ethernet Port. Shown in the top figure is a method known as "phantom power" that puts a common-mode voltage on the Tx and Rx pairs. The lower figure shows the use of the spare pairs fround in the RJ45 connector to provide power.
解决方案说明:
The Tx and Rx pairs should be protected using the appropriate Ethernet protection scheme. The DC power port should be protected using the DC Input protection scheme.
配套解决方案:
无。
监管问题:
IEEE standard 802.3af, UL 60950 or EN 60950, Telcordia GR-1089 may apply.
特性:
无。
应用警告:
无。