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zynq芯片的电源TPS6508641出现问题

 目前是电源板和核心板分开制作的,我现在只做出电源板,没接核心板;

现在测试的问题是buck1-6电压全部有输出且符合设计要求,只是用示波器测试纹波时,输出电压有靠近1V左右的震荡,请问是什么问题?

波形如下,已解决纹波问题