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TPS62136 输出1.2V振荡(输入12V)

Other Parts Discussed in Thread: TPS62136

我们遇到一个很奇怪的问题,就是采用TPS62136做12V转1.2V输出,但是电源振荡了。猜测可能跟Layout相关(我们使用的是Allegro工具)。

请问:

1.能有工具帮助分析甚至仿真为何电源会振荡吗?

2.datasheet里面讲“Common external ground connections ”,是不是说地不能被分割开?

3.这里好像不能上传附件哇?

谢谢

William