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TPS56121供电给C6678产生大纹波。

Other Parts Discussed in Thread: TPS56121, LM10011

5V 输入给TPS56121输出1V 供电给C6678时,会反过来对5V 产生高达1~2V 的纹波。纹波明显和TPS56121的开关频率500Khz 有关。求助论坛上各位大大。对了,我的原理图和TI官方原先给的典型设计一样,不知道为何现在又找不到那个设计了。