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LM3478升压电路输出纹波大

Other Parts Discussed in Thread: LM3481, LM3478

用WEBENCH弄了一个电路,参数完全按照软件选择,电路板是自己铺的,可能不太好,现在纹波很大,求解决方案。也加打输出电容,改COMP脚电阻电容了,也试着改FA/SD脚电阻,但输出仍然纹波很大,好像还影响前级,老是让电量计死机。求帮助!