We are using ADUM4136BRWZ Half Bridge gate driver to drive SIC MOSFET_ FF11MR12W1M1PB11BPSA1,(H -Bridge Configuration),
During Double pulse test set up,
V1:220V, L1:200uH, Ipeak:100A, T1(on):55us, T1(off):10us, T2(on):10us
after that desaturation protection worked and gate pulse is turned off.
Again we have reset control supply and power up at V1:50 V, observe that there no gate pulse at Between Driver IC pin 1 & GND, and the status of following pins are:
Voltage at PIN 5(Reset & GND) is 1.06V,
Voltage at Pin 6(Fault and GND):2.36V,
Voltage at Pin 7(Ready and GND):3.33V,
300K Pull down between Reset pin and GND.
Kindly make a note that this happened while to drive lower side Mosfet and this kind of RESET pin issue observed two times while testing.
Why is it happened?? Why Reset Pin voltage is 1.06V?
We are waiting for your valuable feedback, For better understanding, I am also sharing our schematic screen shots
moved to support, updated question form
[edited by: lallison at 1:39 PM (GMT -4) on 10 Jun 2022]