Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>
Note the extra kludged on components... I thought getting ride of
the wire inductance on a "real PC board" would fix the gate voltage
going too high problem. But not quite at 800 amps =:O
http://hot-streamer.com/temp/SISG-Born-GateOverdrive.gif
35.6 volts on the gate is not terrible... But adding another TVS (I
guess "transorb" is "old now"...) to the gate would fix this and
probably make the module more "streamer hit proof" if it got hit. I
wondered too, if it was just probe error being near an 800 amp
signal... So I got a 20V and 15V TVS and added them to see:
http://hot-streamer.com/temp/SISG-Born-GateOverdrive-Clamped.gif
It is nice to know that those $1200 probes really do work perfectly
:-))) The extra transorb - Opps... "TVS" clamps the voltage right on
and does not hurt the turn-on margin at all... So it is a new part
now... That emitter inductance is a "real thing"....