Hi All,
I need to prevent charging of a battery (i.e. stop reverse current flow). It needs to let about 30A flow forward (peak, typical 10A or 2 standby). Diodes just aren't cutting it due to the voltage drop (this was a last second addition and we don't have much margin due to using a single battery cell). I tried some nice low Rdson power MOSFETs with a 3rd pin to activate the gate when the pack is plugged in and they worked great. Unfortunately they got destroyed by gamma radiation. We need to sterilize these with about 40kGy gamma.
If any of you have any ideas that would help me out I would truly appreciate.
Thanks!