Gate driver output 25% of PWM frequency - any idea how this is possible?
Thanks to @ DKNguyen and @ Unimportant I found the problem. You are right: This particular chip apparently requires a connection between Vs and COM. On the rig I could short the 2 pins and the weird signals became normal.
I then put a 1 meg resistor between Vs and Com and it still worked so it can be transformed in something useful as shorting VS and Com can't really work on a high side gate driver.