Hi, i am using a ISO5500 in my current design of 3phase converter and i would like to ask how is proper way to calculate a DESAT voltage. I need lower a threshold for detecting DESAT fault, so i need to add a diodes. But there is my question. What forward voltage from diode datasheet should i choose ? Because i dont know what current is floating there. Should i pick a voltage around 0.65V for MURS160T3 diode ? I need lower a DESAT threshold around 3.5V so i need get a 7.2-3.5V=3.7V drop at diodes. When i take a 0.65V for MURS diode need i use a 6 diodes ? Is this right way to calculate this voltage? Thank you.
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