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DRV5032: Magnetic Sensing Proximity Tool

Priya Lakshmi
Prodigy 60 points
Part Number: DRV5032

Tool/software:

Hi,

I am planning to use DRV5032 in my design and am in the initial design stages. I would like to use the Magnetic Sensing Proximity Tool for some initial calculations.

In the Design Tool sheet, I see a section called Sensor settings with option to select voltage or resistor. I am not sure what that means. Could you please help with an explanation to that?

Thanks,

Priya

  • 0
    TI__Expert 7950 points

    Hi Priya,

    Thanks for posting to the sensors forum and welcome to E2E.

    Magnetic Sense Proximity Tool is an old version of our simulation tool. I want to point you to our newest simulation tool, TI Magnetic Sense Simulator (TIMSS). TIMSS is available online here: https://webench.ti.com/timss/design 

    Just a heads up, we are in the progress of making updates to the TIMSS tool so you may see some varying results in the device output plots over the next few days. I recommend focusing on the Magnetic Flux Density vs. Distance plot only for the time being.

    In TI Magnetic Sense Simulator (TIMSS), for the DRV5032, under the sensor specifications tab, you should see options to select the specific part number, applied Vcc, and Bop and Brp specs to use for the simulation. The Applied Vcc just impacts the voltage level shown on the device output plot after running the simulation, as it reflects the voltage level when the output is high.

    For additional info, here is the TIMSS user guide: https://www.ti.com/lit/ug/slyu067/slyu067.pdf , and we have a video series coming soon. Please feel free to ask additional questions as you continue to use the tool!

    Best regards,

    Jesse

  • 0 in reply to Jesse Baker
    Prodigy 60 points

    Hi Jesse,

    How would I know when the updates are complete to TIMSS tool?

    Thanks,

    Priya

  • 0 in reply to Priya Lakshmi
    Prodigy 60 points

    Also the Brp and Bop levels seem too low. Should the units be read as T instead of mT?

    Thanks,

    Priya

  • 0 in reply to Priya Lakshmi
    TI__Expert 7950 points

    Hi Priya,

    I will post here to let you know when the updates are complete.

    The Brp and Bop levels for the devices are part of the updates being made. Because of this, I recommend only looking at the Magnet Field Density vs. Distance output plot at this time and ignoring the Device Output plot.

    Best regards,

    Jesse

  • 0 in reply to Jesse Baker
    Prodigy 60 points

    Hi Jesse,

    I am planning to place 2 hall switches on either side of the PCB. This is to have redundancy for error detection. Magnet will be facing the switch on the top layer of the PCB. If I take care of the distance between the magnet and the bottom layer switch and not have copper pour in the path, will this topology work? Will the bottom layer switch also detect well without issues? Is there anything else that I need to take care of?

    Thanks,

    Priya

  • 0 in reply to Priya Lakshmi
    TI__Expert 7950 points

    Hi Priya,

    The DRV5032 should now be updated and ok to use in TIMSS.

    TIMSS allows for adding multiple sensors (up to 6) to a simulation, so you can simulate the configuration you described. Simply add the two DRV5032 sensors and place them as desired, along with the magnet motion. There will likely be a slight difference between the exact point each device activates due to the offset in the Z direction, but this can be further examined in the simulation.

    Best regards,

    Jesse