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DRV8889-Q1: How to connect to 1-2 phases stepper motor ?

PYTsai
Genius 9325 points
Part Number: DRV8889-Q1
Other Parts Discussed in Thread: DRV8899-Q1

Hi 

 How to connect to 1-2 phases stepper motor ? motor spec as below. thanks!

2_Q24BJ48-XXXXW_0_0-00WX-1(1).pdf

  • 0
    TI__Genius 16855 points

    Hi PY,

    The motor you shared with us is a unipolar stepper motor. This is a 5-wire type and does not work well with bipolar stepper drivers. The DRV8889-Q1 is a bipolar stepper driver. Do you need automotive qualified device for this motor? 

    Please refer to this application note, How to Drive Unipolar Stepper Motors with DRV8xxx  https://www.ti.com/lit/an/sloa312/sloa312.pdf.  

    You can ignore pin-3 of this motor and leave it unconnected. Connect 1 and 5 to AOUT1 and AOUT2 and connect 2 and 4 to BOUT1 and BOUT2 of the DRV8889-Q1 or any other bipolar stepper driver. With this connection to the DRV8889-Q1 only full-step mode should be used. No other microstep mode will be supported. 

    Regards, Murugavel

  • 0 in reply to Murugavel4637
    TI__Genius 9325 points

    Hi Murugavel,

    Yes, Q-grade is needed. which device will you suggest to drive this motor? thanks!

  • +1 in reply to PYTsai
    TI__Genius 16855 points

    Hi PY,

    Please review the application note. Like I mentioned if you drive with DRV8899-Q1 (DRV8889-Q1 may be overkill) you can use only in full-step mode. EVM is available for evaluation.

    Regards, Murugavel