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DRV8834

Holger Schindler
Prodigy 650 points
Other Parts Discussed in Thread: DRV8834

Hi,

our customer use DRV8834 in stepper motor application. Some devices cause buzzer noise on the motor.

The problem could be fixed by dedicated device. Failure could be reproduced.

VM                        : 11V

Digital Pin’s          : 3,3V

1/16 Microsteping

AREF und BREF     : ca. 0,1V

Decay Mode          : Mixed Decay (50 KOhm)

R-Sense                 :  0,22 Ohm

 

Motor 

6V / 40 Ohm

Bipolar 18°

Schematic and measurements available.

Please send contact for internal communication.

Best Regards

Holger

  • 0
    TI__Guru** 114905 points
    Hi Holger,

    Please provide the schematics and measurements.

    Also, please provide the model number of the stepper. Is there a capacitor across the motor windings? This could cause overcurrent which cycles the outputs at approximately 800Hz.