This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS23753A 设计咨询

Other Parts Discussed in Thread: TPS23753A

Dear,

用TPS23753A做PD端POE方案,调试过程中发现POE供电的检测、PD端设备分类、开始供电都已经有了,但开始供电冲到48V后马上电压会下来。过程中TPS23753A会发烫,但示波器地接TPS23753A的第六脚(RTN)后TPS23753A不烫了。示波器量TPS23753A的第二脚(VB)无电压,请帮忙分析,谢谢!

附原理图。

b/rTPS23753A调试分析.pdf