Customer would like to confirm below two things. They would like to use CSD19532KTT but found this will be broken by lifetime test. They would like to solve this break and has below questions.
1. CSD19532KTT is being used for motor application. And the drain-source voltage applied to this FET can exceed 100V during 3usec in a 50usec period. They would like to confirm whether this short time violation of the absolute maxim ratings are acceptable. Could you give any comments on this?
2. Customer would like to understand the definition of power dissipation of absolute maximum voltage. How should they understand this?
They are thinking like below.
Power dissipation should not exceed this value even for just a very short time.
This value is the power dissipation when the junction temperature will exceed a certain temperature at 25C ambient temperature. So this means it may be OK to exceed this power dissipation if the junction temperature doesn't exceed a certain temperature. They think that heat sink may help if the latter one is correct.