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DRV8410: Is DRV8410RTER best for 2-phase stepper motor 3.5V, and coil resistance is 14ohm (+/-10%) per phase with micro step drive (sin wave)

Adam Torma
Mastermind 45575 points
Part Number: DRV8410
Other Parts Discussed in Thread: DRV8835, DRV8836, DRV8411, DRV8834

e2e, 

We would like to survey 2-phase stepper motor driver solution with micro step drive (sin wave).

Motor power supply will be around 3.5V, and coil resistance is 14ohm (+/-10%) per phase.

For board space concern, the package will be as small as possible.

Could you please help to check whether there is any possible candidate in TI?

Thank you,

Adam

  • 0
    TI__Mastermind 23431 points

    Hey Adam,

    Yes, I agree that DRV8410RTER is probably best.  I would recommend the DRV8410 or DRV8411 depending on the motor current requirements.  

    I also recommend considering the DRV8835 or DRV8836 as they have a slightly smaller footprint than DRV8410 (3mm x 2mm vs 3mm x 3mm). 

    Regards,

    Jacob

  • 0 in reply to Jacob Thompson
    TI__Mastermind 45575 points

    I checked DRV8410, DRV8411, DRV8835, and DRV8836.

    They seem to be stepper motor drivers with square-wave drive.

    If we would like to drive stepper motor with sin-wave (u-step), may we know how to do?

    Thanks a lot for your support.

  • 0 in reply to Adam Torma
    TI__Mastermind 23431 points

    Hey Adam,

    Ahh I see, the DRV8410/11 support half-step, but that's all.

    For microstepping with an operating voltage of 3.5V, our only option is the DRV8834.  This supports a Vs_min of 2.5V, 1.5A full scale current, 1/32 microstepping, and a package size of 4mm x 4mm.  

    Can you confirm with the customer that the VM operating voltage is 3.5V?  That is very low, and I'm wondering if that's just the stepper motor spec for its coil voltage, not the operating voltage they plan to run at.  If VM is actually 12V (or anything above 5V really) then the DRV8424 would be a much better solution since it is significantly newer, has integrated current sensing and up to 1/256 microstepping, and Smart Tune decay mode.  DRV8834 above is old, was released in 2012 and only has down to 1/32 microstepping.

    Regards,

    Jacob