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Driving 4 stepper motors in parallel with a DRV8824

Michael Sachs
Prodigy 30 points
Other Parts Discussed in Thread: DRV8824

If within proper current limits is it ok to drive 4 identical stepper motors off of one DRV8824 controller?

  • 0
    TI__Mastermind 20985 points

    You can drive steppers in parallel.  Of course, there may be some motor mismatch, causing them to not spin in perfect synchronization.

    Best regards,
    RE

  • 0 in reply to RE
    Prodigy 30 points
    Thanks for your quick reply. Do you think such a parallel scheme may in any way shorten the lifetime of a stepper motor?
  • 0 in reply to Michael Sachs
    TI__Mastermind 20985 points

    No, I don't think it would affect the motor's lifetime.  Lifetime should be based on how much current is going through the windings, and the number of revolutions the motor has spun.  I guess after billion revolutions, bearings or other frictional components will wear.  Also, 1A through small wires over thousands of hours could cause an electromigration type of effect.  Neither are related to motors being in parallel with 1 driver.

    Best regards,
    RE