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tpd6e001问题

Other Parts Discussed in Thread: TPD6E001

tpd6e001在做USB接口防护时,如果信号线打负电压时,信号通过一个控向二极管将电流释放到地,接双向TVS管的话,打负压就是经过雪崩二极管而不是tpd6e001的控向二级管了,tpd6e001的这种方案和单独接一个双向的TVS到信号线有什么优势呢?

另外打正压的时候,高压会不会影响到USB的电源?