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现在做一个PSE的受电方（PD），符合 802.3af即可，推荐个现在常用型号，及相关资料
就我知道的有：
PD: TPS23785
PSE:TPS23851
你到power版本去问应该可以得到更新的信息。
下面这篇文章是否有帮助？也可以去TI官网搜一下相关的产品和文献。
http://www.ti.com/lit/an/snoa464c/snoa464c.pdf
