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以下是原理图和PCB：
看一下MOS管的DS波形，是不是存在震荡。
输出波形：通道1为SW波形，通道2位上管驱动波形，通道3为下管波形，为什么SW有个短周期波形，最后又回到正常波形？跟输入的检流电阻大小有关么？
