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请问第三脚的功能及使用方法,看数据手册不太明白
就是ZCD啊,电流的过零的一个检测脚啊
你看下芯片内部结构图,ZCD又辅助绕组分压过来,进去后就是与过压保护和触发信号比较
过流检测位置吧。PDF里没有写清楚么?
你能告诉我怎么用吗?PDF是这样说的“The pin senses the voltage of the auxiliary winding for zero current detection”