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DRV10964: Difference between DRV10963 and DRV10964

Eric Mo
Intellectual 970 points
Part Number: DRV10964
Other Parts Discussed in Thread: DRV10963,

Tool/software:

Hi team

Please help provide the difference between DRV10963 and DRV10964, and how to modify our design to change to DRV10964. Thank you.

  • 0
    TI__Mastermind 23662 points

    Hi ,

    High-level difference, the pin difference show below

    DRV10963                                                                         DRV10964

     

    Open loop to closed loop hand off is configurable through CONFIG pin on the DRV10964.

    Hence, DRV10964 provides programmable option for wide range of motors.

    Do you have OTP for DRV10963 for the motor used?

    Thanks and Best regards

    Venkatadri S

  • 0 in reply to Venkatadri Shantaram84961
    Intellectual 970 points

    Hi Venkatadri,

    Thank you for your feedback.

    The customer did not use the OTP function in DRV10963, but after changing the design to DRV10964, an abnormal FG signal appeared. The FG output waveform is shown in the following figure, but the actual motor speed is stable. Will abnormal FG signals affect the operation of the motor? How to eliminate it? Thank you!

  • 0 in reply to Eric Mo
    TI__Mastermind 23662 points

    Hi Eric,

    Is it possible to probe one of the phase currents (may be phase U) along with FG, we can check if there is a jitter like we are seeing.

    What is the blue waveform?

    In the schematic R10 and R18 are NC? These pins have internal pull up anyway.

    The default OTP of DRV10964 Kt may not be matching with the actual motor Kt. 

    Using EVM (Socket based), user can configure program to RAM for Kt and also any other tuning.

    The EVM part number is DRV10963AEVM Evaluation board | TI.com

    Thanks and Best regards

    Venkatadri S