因为要过EFT 群脉冲测试,所以我们在输入端串联了一个220uH的电感,就不正常了。系统不能开机。示波器看波形,原理图,如下。
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Hi
你的测试fail是指什么?能否具体说明一下
能否将这个时候芯片的输入电压,输出电压,EN波形传上来看看(同时抓波形)?