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UCC28600: 输出电压不稳定,驱动信号大小波

Part Number: UCC28600

参考UCC28600芯片相关电路设计,输出5V/3A,能够输出5V电压,但输出不稳定,会从5V跳到0V,测试开关驱动信号,出现大小波波形信号,能帮忙看下环路哪里有问题吗?万分感谢!