DRV8834 holding current

ken dzierzek

Other Parts Discussed in Thread: DRV8834

Could you drive AVREF and BVREF with an external VDAC to create a lower level holding current? Or would that just reduce the current chopping threshold?

over 12 years ago

0 Milan Rajne over 12 years ago

TI__Expert 8885 points

Ken,

Yes AVREF and BVREF can be driven by external DAC to control motor winding current in holding mode. Note that DRV8834 current regulation works with fixed PWM frequency and Vref voltages set only the peak level of chopping current so the average current in holding mode will depend upon supplied voltage, motor winding resistance and inductance values.

Best Regards

Milan

0 ken dzierzek over 12 years ago in reply to Milan Rajne

Prodigy 40 points

Thanks Milan

Motor drivers

Motor drivers forum

DRV8834 holding current