Part Number:ISO5852S.
Hello.
I finally assembled the stand on ISO5852. I conduct experiments to protect IGBT against short circuits. On the 1st chart - a soft short circuit, on the 2nd graph - a hard short circuit. Yellow - Uge (+15V on,-15V -off), green-collector current(0.2mV/A), and blue - voltage on the 2 legs of the chip (Desat pin). In the first case, the protection operates as expected - when the voltage reaches 9V, the transistor turns off. In the second experiment, it turns off when the voltage at pin + 25V. Why does not it turn of transistor at 9V ???
