Device and method for current measurement
AssigneeInfineon Technologies AG
InventorsEdwin Mario MOTZ, Francesco POLO
Life of this patent
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Abstract
The present disclosure relates to a current sensor, including a magnetic-field sensor for measuring a magnetic field induced by an electrical current; an output connection for providing an amplified measurement signal from the magnetic-field sensor, the magnetic-field sensor and the output connection being connected by an analog signal path having at least one amplifier, the analog signal path having a frequency response; a temperature sensor for measuring a temperature; and a compensation circuit which is coupled to the analog signal path and is configured to correct the frequency response of the analog signal path based on the temperature.
Claims15
A current sensor, comprising:
- a magnetic-field sensor configured to measure a magnetic field induced by an electrical current;
- an output connection configured to provide an amplified measurement signal from the magnetic-field sensor,
- the magnetic-field sensor and the output connection being connected by an analog signal path having at least one amplifier,
- the analog signal path having a frequency response;
- a temperature sensor configured to measure a temperature;
- and
- a compensation circuit which is coupled to the analog signal path and is configured to correct the frequency response of the analog signal path based on the temperature.
A method for current measurement, comprising:
- using a magnetic-field sensor to measure a magnetic field induced by an electrical current;
- providing an amplified measurement signal from the magnetic-field sensor at an output connection,
- the magnetic-field sensor and the output connection being connected by an analog signal path having at least one amplifier,
- the analog signal path having a frequency response;
- measuring a temperature;
- and
- correcting the frequency response of the analog signal path based on the temperature.
Dependencies are inferred from the claim text.