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CURRENT SENSOR

  • US 20200132736A1
  • Filed: 09/20/2019
  • Published: 04/30/2020
  • Est. Priority Date: 10/30/2018
  • Status: Abandoned Application
First Claim
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1. A current sensor comprising:

  • a sensor element configured to output a value of physical quantity depending on current supplied to a load; and

    a sensor controller configured to output a current value based on the output value of the sensor element,wherein the sensor controller is configured to;

    acquire the output value and a temperature of the sensor element while current is not supplied to the load;

    determine a correlation between the output value and the temperature based on a plurality of sets of the acquired output value and the acquired temperature;

    calculate an offset of the output value at a temperature of the sensor element while current is supplied to the load based on the correlation;

    calculate the current value from a value obtained by subtracting the offset from the output value of the sensor element while current is supplied to the load; and

    output the calculated current value.

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