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DRV8256: DRV8256 to replace ST L6208

Rock Shao
Expert 2995 points
Part Number: DRV8256
Other Parts Discussed in Thread: , , DRV8434, DRV8412

Hi,

My customer finds the stepper motor driver for 3A continuous current application.

Could you help to check the DRV8256 replace ST L6208 and support the stepper motor driver? Or there have other suggestions? Thanks.

 

  • 0
    TI__Mastermind 37683 points

    Hi Rock,

    Based on the current needs of 3A continuous, the DRV8256 looks like a good replacement for the L6208. The DRV8256 can handle up to 5A continuous. The DRV8256 has an operating voltage of 4.5V - 48V which is slightly lower than the L6208. If you don't require a higher input voltage, then the DRV8256 should be a good replacement.

    If you wish to test the DRV8256, you can order a DRV8256PEVM or DRV8256EEVM evaluation board. The difference between the two is the control interface type.

    Let me know if you have any further questions

  • 0 in reply to Pablo Armet
    Expert 2995 points

    Hi Pablo Armet, 

    Can DRV8256 control the bipolar stepper motor? If not does TI has the bipolar stepper motor driver for 3A continuous current application. thanks.

  • 0 in reply to Rock Shao
    TI__Mastermind 37683 points

    Hi Rock,

    The DRV8256 can drive one bi-directional brushed DC motor. It cannot drive one bipolar stepper motor. I apologize, I misread your original question.

    One stepper motor driver I recommend is  the DRV8434 which has a full-scale current of 2.5A and peak current of 4-A.

  • 0 in reply to Pablo Armet
    Expert 2995 points

    Hi Pablo Armet, 

    How long is the duration of the peak current of 4-A? Is it can support full-scale?

    Does TI have a plan for the upper 3A  stepper motor solution in the future?

    Could you share the motor driver hero part PPT for me? thanks.

    My email address: Rock.Shao@arrow.com 

    Regards

    Rock

  • 0 in reply to Rock Shao
    TI__Mastermind 37683 points

    Hi Rock,

    The DRV8434 can hand 4-A peak for around 2us which is the OCP deglitch time. An overcurrent protection(OCP) fault will be triggered if the 4-A current persists for longer than 2us.

    I forgot to list the DRV8412/8432 in my previous reply. The DRV8412 and DRV8432 are dual h-bridge drivers that can drive one stepper motor. The DRV8412 can drive up to 3A continuously per bridge and the DRV8432 up to 7-A continuous per bridge.