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DRV8834: motor application

Roger Lin
Expert 4410 points

Part Number: DRV8834
Other Parts Discussed in Thread: DRV8424, DRV8425, DRV8461, DRV8462, DRV8434A, DRV8434S

Hi team,

  My customer is using PKP243D15A2-SG18 as their motor solution

   https://www.orientalmotor.com.tw/tw-zh/products/detail?hinmei=PKP243D15A2-SG18

   (2-phase-- 1.5A/phase ; / bipolar type  ; step angle-0.1 °;  gear ratio : 18:1 )

 

  1. Is DRV8834 suitable for the application, or are any larger output current solutions recommended?
  2. Regarding the phenomena of noise suppression and step loss during stepper motor rotation, are there any recommended methods or optimization techniques available within Motor Driver ICs?  (etc microstepping or more supply voltage…)

Thanks

  • 0
    TI__Guru 59325 points

    Hi Roger,

    Thank you for your post.

    Roger Lin said:
    Is DRV8834 suitable for the application, or are any larger output current solutions recommended?

    The stepper motor PKP243D15A2-SG18 has low DCR of 0.55 Ω /phase and L of 0.77 mH /phase in its datasheet. Based on this we'd recommend the DRV8424 or the DRV8425, lower Rdson is better. 

    Roger Lin said:
    Regarding the phenomena of noise suppression and step loss during stepper motor rotation, are there any recommended methods or optimization techniques available within Motor Driver ICs?  (etc microstepping or more supply voltage…)

    To achieve good quality sine wave current 12 V or higher VM operating voltage may be required. The DRV8834 supports up to 10.8 V only. The DRV8424 or 25 can support up to 33 V. These drivers also support up to 256 usteps operation and smart tune decay modes for lowest audible noise. We do not have step loss detection in any of our drivers. However drivers such as the DRV8434S, DRV8434A, DRV8452S, DRV8461, DRV8462 have stall detection feature etc.

    Regards, Murugavel