Methods and apparatus for a current sensor having fault detection and self test functionality
First Claim
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1. An integrated circuit, comprising:
- a sensing element;
fault detection module coupled to the sensing element, the fault detection module including circuitry to detect and output a fault condition and circuitry to perform self-test operation of the circuitry to detect the fault condition; and
a fault pin to output the fault condition and to receive a self-test command,wherein the fault condition includes a magnetic field is above a first threshold and/or below a second threshold,wherein the self-test is terminated before completion when the magnetic field is above a flux threshold, andwherein the self-test operation is initiated only when the magnetic field is below a certain level associated with no magnetic field present.
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Abstract
Methods and apparatus for an integrated circuit having a magnetic sensing element, a fault detection module including circuitry to detect a fault condition and to self-test operation of the circuitry to detect the fault. The integrated circuit includes a fault pin to indicate the fault condition.
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Citations
18 Claims
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1. An integrated circuit, comprising:
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a sensing element; fault detection module coupled to the sensing element, the fault detection module including circuitry to detect and output a fault condition and circuitry to perform self-test operation of the circuitry to detect the fault condition; and a fault pin to output the fault condition and to receive a self-test command, wherein the fault condition includes a magnetic field is above a first threshold and/or below a second threshold, wherein the self-test is terminated before completion when the magnetic field is above a flux threshold, and wherein the self-test operation is initiated only when the magnetic field is below a certain level associated with no magnetic field present. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification