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US 11,442,084 B2Granted
Current sensor circuitry
AssigneeArm Limited
InventorVincent Gouin
Life of this patent
Estimating the term…
Abstract
Various implementations described herein are directed to a device having a load circuit that consumes current. The device may include a power distribution network having impedance stimulated by the load circuit. The device may include a sensing circuit that collects voltage during operation of the load circuit and reconstructs an origin current for the load circuit based on the impedance of the power distribution network and the voltage collected during operation of the load circuit.
Claims20
A device, comprising:
- a load circuit that consumes current;
- a power distribution network having impedance stimulated by the load circuit;
- and
- a sensing circuit that collects voltage during operation of the load circuit and reconstructs an origin current for the load circuit based on the impedance of the power distribution network and the voltage collected during operation of the load circuit,
- wherein the sensing circuit comprises a first circuit that is configured as a current generator to characterize the impedance for the power distribution network by generating current stimuli and sensing a transient voltage response of the power distribution network.
2 more elements
A system, comprising:
- a processor;
- and
- memory having stored thereon instructions that, when executed by the processor, cause the processor to:
- characterize impedance of a power distribution network coupled to a load circuit that consumes current;
- collect voltage during operation of the load circuit;
- and
- reconstruct an origin current of the load circuit based on the impedance of the power distribution network and the voltage collected during operation of the load circuit,
- wherein characterizing the impedance of the power distribution network includes generating current stimuli and sensing a transient voltage response of the power distribution network.
5 more elements
A method, comprising:
- characterizing impedance of a power distribution network coupled to a load circuit that consumes current;
- collecting voltage during operation of the load circuit;
- and
- reconstructing an origin current of the load circuit based on the impedance of the power distribution network and the voltage collected during operation of the load circuit,
- wherein characterizing the impedance of the power distribution network includes generating current stimuli and sensing a transient voltage response of the power distribution network.
2 more elements
A method, comprising:
- generating current stimuli for a power distribution network coupled to a load circuit that consumes current;
- sensing a transient voltage response of the power distribution network based on the current stimuli;
- collecting sensed voltage during activity of the load circuit based on the transient voltage response of the power distribution network induced by the current stimuli;
- and
- quantifying a magnitude of the transient voltage response of the power distribution network using the sensed voltage collected during activity of the load circuit when induced by the current stimuli.
2 more elements
Dependencies are inferred from the claim text.