What are you making ?

Well bit complicated in short bidirectional digital "fuse" bascially just switch that turns of when output current is too high

 

Aaah ! An over current protector.

 

Well bit complicated in short bidirectional digital "fuse" bascially just switch that turns of when output current is too high

And what is it protecting that needs at least 600 volt and 450 amp switching device working capacity?

 

And what is it protecting that needs at least 600 volt and 450 amp switching device working capacity?

Automotive/power electronic application that's all I can say sorry

 

Automotive/power electronic application that's all I can say sorry

Odds are there is a whole lot more going on in the system than what assuming it clan DC power would imply.

It's not a solid state 'starter protector' or relay is it?

 

That document describes a; "PT IGBT" - which seems to be not the same thing as an IGBT without the "PT" prefix.

PT, NPT, and SPT IGBTs are very similar in structure:


PT start with a P+ wafer while NPT and SPT start with an N- wafer. For the latter, the P+ region for the collector is a backside implant.

A "complete" schematic is:

This doesn't show the diode across the S/D of the MOSFET; it's the collector-base junction of the NPN transistor.