PI网站上puzzler1里面看到了关于反激式输出整流二极管的参数选择方法(答案1),关于Reverse recovery time (trr) 这个参数,有这样一段:To prevent large reverse currents from flowing through the diode when the MOSFET in U1 turns on, applying a reverse voltage, the diode should have a reverse recovery time less than switching time. This means a recovery time of 50 ns or better.
请问1)这个50ns是怎么得出来的,里面提到的mosfet 开通时间是多少?2)还有PI的管子,Top-GX 和DPA里面封装的mosfet都有哪些区别?
