Could you please give me some comments or tips about the microstepping methods, DAC on Vref or PWM as TIDA-00641?
In my case, the IC would be using is the drv8881P which has the Vref range from 0.3V ~ 3V, I believe the range should be sufficient for the microstepping, by the may, the c2000 has a 12bit build in DAC, in this case, will be DAC to Vref method a better choice?
is there a performance difference between DAC to Vref and PWM method?
what will be the analog bandwidth of Vref input usually, If we use the DAC to Vref to regulate the current? I did not found any parameters for this in datasheets.