8/16該高手提出卡斯特FET零件用太好 gate resistance is too low,但電路板路徑設計不好,並畫出解決之電路圖,原文如下:
The Problem i see here is that you are using FETs which are too good. Their gate resistance is too low, and the FET driver is delivering the current, doing its job properly, however the poor power paths are causing excessive voltages damaging the unit.
A simple solution is, i'm not sure if you've tried it, is to add some gate resistance..... Or use cheaper FETs... Or just tell your PCB designers to decrease the ground/return path resistance to the drivers and move them as close as possible to the FET source.