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  • DRV8821: What Vref to use

    TI Thinks Resolved
    Part Number: DRV8821 I'm supplying the motors with 12V and logic with 3.3V, and my R_ISENSE resistors are all 0.3Ohms, same as the reference design. Can I just hook the VREF pins to 3.3V and let the overcurrent protection do the rest? Using the given…

  • DRV8821: No change in output current

    Part Number: DRV8821 Hi team, Issue: debugging the voltage of Vref from 1.0 V to 3.5 V, and the output current of the motor does not change (compared from the power of the input supply). And the customer would like to achieve the following result: Vref…

  • DRV8821: DRV8821DCAR ABOUT

    TI Thinks Resolved
    Part Number: DRV8821 HI TPS54331DDAR, TPS2069CDBVR, TPS54531DDAR, DRV8821DCAR IC It is difficult to obtain the above material, so we have to supply other IC. Are there any material that are fully compatible with above material?

  • DRV8821: DrRV8821 IC shutdown problem

    Part Number: DRV8821 Hello, I am Ananth from Chennai.I have used the driver IC drv8821 with a stepper motor.I am operating the motor in the various PPS. I will explain the flow below 1.I have rotate the motor initially from 200- 1200 PPS in 100 steps…

  • DRV8821: Applying TIDA-01227 reference design to DRV8821

    TI Thinks Resolved
    Part Number: DRV8821 Other Parts Discussed in Thread: TIDA-01227 , DRV8711 , Hi, I want to design High Voltage Stepper Driver as in TIDA-01227 reference design but for two stepper motors. Is it possible to apply same analogy used for DRV8711 to DRV8821 dual…
    • Answered

  • DRV8821: Stepper motor backfeeding DRV8821?

    Resolved
    Part Number: DRV8821 Other Parts Discussed in Thread: DRV8885 , DRV8880 , DRV8886 I have a DRV8821 driving a stepper motor at 1 amp peak. If I grab the motor and force it to turn when it is energized and stationary, the motor de-energizes. Probing the current…
    • Resolved
    • Answered

  • DRV8821: The Bridge A/B control problem.

    Resolved
    Part Number: DRV8821 Other Parts Discussed in Thread: DRV8823 Hello sir: About DRV8821 control, we meet a problem need help. The below picture is catch from Scope and you can find the B Bridge is slow 1/4 wave of A Bridge. From DRV8821 datasheet,…
    • Resolved
    • Answered

  • RE: DRV8821: Problem with DRV8821

    Resolved
    Yes.Thank you. Martin

  • DRV8821: stepper motor driving modes

    TI Thinks Resolved
    Part Number: DRV8821 I have seen some terminologies for two different controlling scheme for the stepper motors. Can you please help me on this? On part DRV8821 page 10, it says that “The DRV8821 contains four H-bridge motor drivers with current-control…
    • Answered

  • CCS/DRV8821: what is the minimum stepping angle in DRV8821?

    Resolved
    Part Number: DRV8821 Other Parts Discussed in Thread: DRV8880 , DRV8824 Tool/software: Code Composer Studio Hi , i have certain doubts about the motor driver ic DRV8821 because i'm started to work with a printer.From datasheet i noticed the application…
    • Resolved

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