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.

LMZ31520 要兼容外部3.3V(Vouter)供电

Other Parts Discussed in Thread: LMZ31520

我们有一个板子上准备使用贵司的LMZ31520做12V转3.3V供电,同时要兼容外部3.3V(Vouter)供电。

为了在外部3.3V turn on时自动turn off LMZ31520的输出,我们想用Vouter来控制LMZ31520的INH。

如果参考下图这样控制,请问在Vouter上电的瞬间,当LMZ31520还没有turn off之前,其输出3.3V与Vouter同时存在会有多大影响?

这种应用怎样消除两个电源冲突的风险,是否有更优的控制方式?