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  • RE: DRV8701: nfault pin remains high after exceeding hardware current limit

    Hi Murugavel, Customer wants to know how the SO pin of DRV8701 works? It can be seen from the screenshot of the oscilloscope that when the current is chopped, the voltage collected by the voltage dividing sampling point of SO directly becomes 0. This causes…

  • DRV8701: DRV8701

    TI Thinks Resolved
    Part Number: DRV8701 Hello I have done schematic and layout Please help me to check my Gerber files and Schematic Thank you Ilya
    • Answered

  • DRV8701: Control Linak LA14

    Resolved
    Part Number: DRV8701 Other Parts Discussed in Thread: DRV8251A Hello, We want to control a Linak LA14 motor using the DRV8701: We want to control the motor in one direction: open or close. Could you comment on this if you see any challenges? -This…
    • Resolved

  • RE: DRV8701: MOSFET selection for DRV8701

    Hi Supriya, Could you please provide the answers to the following questions so we are better able to understand this issue? 1) Are the FETs being configured for high-side or low-side? 2) Are you receiving any faults while operating? 3) After the CSD18542KCS…

  • DRV8701: The output of drv8701 is abnomal whe the loads switched in

    Part Number: DRV8701 Dear teams, Recently, one of our DRV8701 chips failed, and the four gate output control voltages were abnormal. The phenomenon is that the output voltage without load is normal, and the load ON the chip will stop at once, reporting…

  • DRV8701: Does DRV8701ERGER have a published errata sheet?

    TI Thinks Resolved
    Part Number: DRV8701 Other Parts Discussed in Thread: TPS40070 I have searched ti.com but cannot find a published errata sheet for the DRV8701ERGER. If one exists, could you provide it to me please? many thanks Simon
    • Answered

  • RE: DRV8701: Operation at 15KHz has no power at lower Duty Cycles < 60% Operation > than 5KHz PWM Frequencies = Duty cycle control issues.

    Resolved
    Hi Jason, Happy to hear you were able to address the hardware changes without spinning the PCB by using a dual AND gate and using firmware to change the direction. I'm glad your application works very well at 15kHz with the DRV8701. Thank you for the…

  • RE: DRV8701: Problem with SO pin output on a custom DRV8701 board.

    Hey Owen, Thanks for the video, I see the fluctuation you mean. I agree with Ryan's above answer that this small amount of variation is probably normal/unavoidable with this part. The DRV8701 is one of our first ever motor driver gate driver, and we…
    • Answered

  • DRV8701: Current Sense Delay

    Resolved
    Part Number: DRV8701 Is there a way of delaying (or blanking) the overcurrent detection for a predictable amount of time? I would like to allow for a turn-on surge before starting current chopping.
    • Resolved

  • DRV8701: PWM Frequency Limit

    TI Thinks Resolved
    Part Number: DRV8701 I have a brush motor driver based a DRV8701E and want to use MCU generated PWM to ramp up the motor. It looks like the internal chop frequency is ~37kHz (1/(toff + tblank)). What would be a practical upper limit for the external PWM…

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