Hi，Rick
Thanks for your reply.
I need to use 256 microsteps, yes. and I tried your parameters, tested with 47 Ohm and 120 Ohm resistors on low side gate. I still get the error and even run less than one second in All Mixed Mode, and the PDF occurs ramdonly on two channels, here is waveform what I catched when nFAULT is setted(two low side gate voltage in one channel):
With 47 Ohm resistors:
With 120 Ohm resistors:
I could run these parameters with 30V nicely, but PDF occurs less than half second after power-on when using 48V. Is this the problem caused by the spike? How could I reduce them if it is.
It's 5 am in Beijing, so tired, I need to have reset. Hope get your reply, thanks.