CURRENT SENSOR, SYSTEM AND METHOD
First Claim
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1. A system, comprising:
- a conductor;
at least one first electrical contact coupled to the conductor at a first position;
at least one second electrical contact coupled to the conductor at a second position, the first position and the second position being arranged at a distance with respect to each other; and
a pair of force terminals configured to inject, via the at least one first electrical contact and the at least one second electrical contact, a test current into the conductor; and
a device, comprising;
a microelectronic package;
a memory configured to store a predefined reference resistance associated with the conductor;
a pair of sense terminals configured to provide an input signal related to a voltage drop across the conductor between the at least one first electrical contact and the at least one second electrical contact, wherein the pair of sense terminals is at least partly accessible from outside the microelectronic package; and
at least one processor configured to determine a primary current through the conductor based on the input signal and the predefined reference resistance.
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Abstract
Current sensors, systems and methods are provided. A test current is injected via a pair of force terminals into a conductor and a pair of sense terminals are configured to provide an input signal that corresponds to a voltage drop across the conductor. Based on the test current in the conductor and based on the input signal, a contribution to the voltage drop due to the test current and a contribution to the voltage drop due to a primary current through the conductor may be determined. In addition, at least one of a reference resistance of the conductor and the primary current in the conductor may be further determined.
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Citations
22 Claims
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1. A system, comprising:
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a conductor; at least one first electrical contact coupled to the conductor at a first position; at least one second electrical contact coupled to the conductor at a second position, the first position and the second position being arranged at a distance with respect to each other; and a pair of force terminals configured to inject, via the at least one first electrical contact and the at least one second electrical contact, a test current into the conductor; and a device, comprising; a microelectronic package; a memory configured to store a predefined reference resistance associated with the conductor; a pair of sense terminals configured to provide an input signal related to a voltage drop across the conductor between the at least one first electrical contact and the at least one second electrical contact, wherein the pair of sense terminals is at least partly accessible from outside the microelectronic package; and at least one processor configured to determine a primary current through the conductor based on the input signal and the predefined reference resistance. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device, comprising:
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a microelectronic package; a pair of sense terminals configured to provide an input signal related to a voltage drop across a conductor; and at least one processor configured to determine, based on a test current in the conductor and based on the input signal, a contribution to the voltage drop due to the test current, to determine a contribution to the voltage drop due to a primary current through the conductor, and to determine the primary current. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method, comprising:
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injecting, via a pair of force terminals, a test current into a conductor; receiving, via a pair of sense terminals, an input signal related to a voltage drop across the conductor; determining, via at least one processor, based on the test current and the input signal, a contribution to the voltage drop due to the test current; determining, via the at least one processor, a contribution to the voltage drop due to a primary current; and determining, via the at least one processor, at least one of a reference resistance of the conductor and the primary current. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification