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DRV10975: DRV10975 Evaluation Module can control without usb2any

mohammad abdi
Prodigy 40 points
Part Number: DRV10975
Other Parts Discussed in Thread: USB2ANY, DRV11873

hi

I want to control a pump with drv10975. i want to use DRV10975 Evaluation Module.

BUT there are some problems. i study the related documents but i don't know the "USB2ANY" should be connected all of times that motor is driving

or we can separate it after loading and control with potentiometer ??  i mean after we load the parameters we can use the controller without "USB2ANY" or not??

also i don't know if i want to use DRV11873 Evaluation Module how i can change motor poles or it is not needed and how i can add on/off button???

thanks for replying

  • 0
    TI__Expert 6065 points
    DRV10975:
    1) If you are controlling the speed through I2C and are only communicating through I2C with the USB2ANY, then only should USB2ANY be always connected. If you set the speed input mode to analog and disable "I2C Speed Control Override", then you dont need the USB2ANY connected and can control the speed through potentiomer.
    2) After loading the eeprom, then you can use controller without USB2ANY.

    DRV11873:
    1) Motor poles are not needed to spin the motor. section 8.3.2 Frequency Generator in the DRV11873 datasheet talks about calculating rpm from the FG pin using the knowledge of the number of motor poles.
    2) to add an on/off button, just put a switch on the Vcc of the device.

    Let me know if you have any questions, and if your problem has been resolved, please click the resolved button.
  • 0 in reply to Sanmesh Udhayakumar
    Prodigy 40 points

    thank you so much for complete answer .