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DRV8215EVM: Motor sensing design

Ian Olazar
Prodigy 10 points
Part Number: DRV8215EVM
Other Parts Discussed in Thread: DRV8212, DRV8213, DRV8215, DRV8214

Tool/software:

Hello,

I am interested in using one of your DRV821X series components. Mainly, I am interested in the Evaluation Boards of the DRV8212, DRV8213 and DRV8215 components because of the features they offer.

Our application is based on the implementation of a obstruction detection system for motorized components (primarily using DC motors). To achieve this, we need a driver capable of characterizing and monitoring motors (current, position, speed, etc.), as well as transmitting this information to different MCUs. We have seen that the evaluation boards of this family allow the connection of dverse DC motors and support isolation between sections to communicate with an external MCU via I2C.
We would like to confirm this in order to proceed with acquiring the devices and begin testing.

I would appreciate if you could tell me which option would be the most suitable one for this application, confirming the feasibility of connecting an external MCU that may be from a manufacturer or supplier other than TI.

Thanks in advance.

  • 0
    TI__Expert 4080 points

    Hello Ian,

    Thank you for posting in this forum. 

    The series of DRV821X benefits from following features. 

     

    THE DRV8213 and DRV8215 have analog current sense output (IPROPI). The IPROPI current sense output allows a microcontroller to detect motor stall or changes in load conditions. The DRV8215 also has gain select (GAINSEL) feature which allows high accuracy current sensing down to 10 mA average motor current. 

    The DRV5215 can be a good candidate in your application as it benefits from Integrated Voltage and Speed regulation and also Soft-Start and Stop feature for inrush current.

    This device does not have any position control, but you can use DRV8214 that contains On-chip Speed and Position detection. The devices are all adaptable with all MCUs from any suppliers. 

    Please let me know if you have any questions. 

    Best regards.

    Mojtaba.