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LMR14030 8V 输出,电流1.5A,纹波过大。
示波器抓图,和原理图PCB如下。测试点为
这个不是纹波,是噪声。采用纹波测试的标准方法,测试一下纹波看看。
Hi
纹波测量,见附件.
其次注意一下输出电容,可以看看datasheet的要求。
7318.TI-如何正确测试电源的纹波?.pdf