Part Number:DRV8323R
Hello,
My initial issue was, that my motor makes some noise at a static duty cylce and 40kHz.
I'm using a DRV8323RS three phase gate driver and wondering about the gate voltage at the low side mosfets. Vm is about 24V and gate voltage is between 10V and 16V, see scope capture. The variation in gate voltage causes some variation in the switch off time, further it causes some small change in the resulting duty cycle, what further causes some current changes and I think, that is the noise what I can hear.
Is this voltage swing normal? What could be wrong?
Regards, Konrad
