Thanks much .

Hi sir ,

Thanks for reply.

I agree that dither frequency and amplitude has to be set such that the hysteresis is overcomed  .

Some websites ( link below) claim that high frequency PWM is better and dither can be added to it separately with required frequency and amplitude

I had some questions because of that.

So what difference will be there between PWM and dither ? Except that we vary the current by varying the width of pulses of PWM.

Best regards

http://www.axiomatic.com/pulse-width-modulation.pdf