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DRV8833C: Microstepping with DRV8833C

Matt Staniszewski
Prodigy 50 points
Part Number: DRV8833C

Hi,

I'm evaluating the DRV8833C for use with our stepper motors.  Section 8.2.21 of the spec sheet states:

The DRV8833C can support full- and half-stepping modes using the PWM interface

Does this mean that the DRV8833C does not support 1/8 (n = 8) and other microstepping levels?

Thanks!
Matt

  • +1
    TI__Mastermind 37683 points

    Matt,

    Matt Staniszewski said:
    Does this mean that the DRV8833C does not support 1/8 (n = 8) and other microstepping levels?

    Correct. The DRV8833C does not have an integrated step indexer to support higher stepping rates. If you require higher stepping rates, I recommend the DR8411A which has a dedicated VREF pin to adjust the motor current. A DAC can be connected to VREF with a sinusoidal output to generate the desired microstepping rate.

    Regards,

    Pablo Armet