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DRV5055: Hall sensor selection

Anna
Intellectual 920 points
Part Number: DRV5055
Other Parts Discussed in Thread: MCT8316Z, , TMAG5173-Q1, TMAG5170, TMAG5273, TMAG5115

Hi Dear,

1.Our customer's application is UAV pan-tilt control. At present, MCT8316Z with control algorithm has been selected, and external Hall sensor is required to confirm the position.

2.Considering that the linear hall sensor DRV5055 can perform accurate position detection, we want to know how to connect this linear hall to MCT8316Z?

3.For this application, do you have other Hall sensors to recommend

  • 0
    TI__Genius 15290 points

    Anna,

    Thanks for reaching out on E2E.  DRV5055 is an analog output device, so it will be necessary to use an analog to digital converter to provide digital inputs to your microcontroller.  The output is centered at VCC/2 and the sensitivity will vary ratiometrically based on VCC.  It will be necessary to provide VCC as a reference voltage to the sampling ADC.

    Additionally, our linear 3D sensors offer a digital interface with integrated digital conversion. Devices such as TMAG5273, TMAG5173-Q1, TMAG5170, could fit well here. Two DRV5055 placed 90 degrees out of phase or one of these sensors would be used to provide absolute angle position for any control algorithm you are running. For motor commutation feedback, linear outputs are not normally used for this purpose.

    To provide Hall-sensor feedback for motor commutation, it is more typical to use a latch type sensor:

    https://www.ti.com/sensors/magnetic-sensors/products.html#o7=Hall-effect%20latches%20&%20switches&p1241=Latch

    For instance TMAG5115 would be a good fit for this functionality.

    Thanks,

    Scott