At 24V spikes of 5V occur at SH_X pins (means 39V with respect to GND) without connecting the motor.
At 55V spikes of approx 6V occur at SH_X pins (means 61V with respect to GND) without connecting the motor.Do the spikes increases after connecting the motor?
I am using 3000uF bulk capacitor.I think that is enough for 1KW motor.
Can u please tell me how to calculate the bootstrap,GVDD,AVDD capacitor and gate resistor values?