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.

LM5069: lm 5069 PROTECTING AGAINST NEGATIVE VOLTAGES 没起作用

Part Number: LM5069


1763620742539.jpg原理图如上图所示,D27作用就是为了防止负电压进入引起短路,但是实测没起作用。请问下是为什么?