Driver interface board

[arber333]

Some time ago i had terrible problems with my DIY inverter drivers. I destroyed several chips and IGBTs just while using them.
Finally i made a board that would house 3x Semikron SKYPER 32 pro R.
Idea was this board would be an interface with drivers and also to ease assembly. I wanted to get rid of all the cables from main board to drivers and sensors so i designed driver connectors to mirror those on Johannes board which lets me to just use ribbon cable without splitting it.

Also i designed support elements so that i could easily remove/replace them and change dead time, desat timing etc...
One still needs power supply 15V, but i think i can quickly add one to design if there is interest.
Up to this day i had a few desat events, but no failure of IGBTs.

If you are interested see attached PCB rev 2. I didnt include schematic since i used Skyper 32 manual example. In the zip i have also desat calculation.

EDIT: This could be made for SCALE drivers so you could have desat and other protection ability.

[johu]

That would be great if you want to design a driver interface board.
So for the next main board I consider dropping IDC headers and using 2.56mm amp connectors. What do you think?
Also the pin out will change. GND, LOW and HIGH remain the same but the forth pin will be desat. It will be pulled high by the STM32 internal pull up and buffered with a small cap (like 2n2). The gate driver can pull it low for fault signalling.

So 5V is gone since Scale/Semikron drivers run from 15V.
What would be the input range if you generate 15V onboard?