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TPS562200纹波大问题

Other Parts Discussed in Thread: TPS562200

在使用TPS562200芯片,布板参考demo电路,一块PCB上有两路输出,分别12V-5V,12V-3.3V,两路同时工作,纹波特别大,但一路空载,一路满载输出时候测量纹波,就满足要求,这有没解决办法的