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RT而且貌似中间还引了一根线,接哪去了
亲,这是钳位二极管。当MOSFET被开通时,将COMP电压限制在1.4V左右。
中间那根线只是一个管脚,这个输入SOT-23封装的二极管。作用如XP所说,就是Q1导通的时候,将COMP钳位用的。