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buck电路采用3843驱动芯片,输出电压波形如上面所示.mosfet驱动芯片采用ir2181高端驱动,3843给出的驱动波形加到2181上面后,后者输出的波形如下图所示.请教1.波形何来阶梯?2.2181的供电电压是15v,输出最大值怎么到了将近40v?
跪求高手指点!
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