Device and method for compensating for ground voltage elevations
AssigneeFreescale Semiconductor, Inc.
InventorsYefim Fefer, Michael Zimin, Sergey Sofer
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Abstract
A method and a device, the device has ground voltage elevation compensation capabilities and includes: multiple current consuming components; a positive voltage supply input; a negative voltage supply input; and a compensation circuit, coupled to the negative voltage supply input and to a grounding element; wherein the compensation circuit is adapted to detect a ground voltage elevation resulting from a flow of excess consumption current through the grounding element, and in response couple the negative voltage supply input to the grounding element; wherein the excess current flows through the grounding element due to an increment in a current consumption of a current consuming element of the device.
Claims20
A device having ground voltage elevation compensation capabilities, the device comprises:
- multiple current consuming components;
- a positive voltage supply input;
- a negative voltage supply input;
- and
- a compensation circuit coupled to the negative voltage supply input, to a grounding element and to a ground voltage reference point;
- wherein the compensation circuit, during device operation, functions to detect a ground voltage elevation resulting from a flow of excess current through the grounding element, and in response couple the negative voltage supply input to the grounding element;
- wherein the excess current flows through the grounding element due to an increment in a current consumption of a current consuming element of the device.
A method for compensating for a ground voltage elevation, the method comprises:
- detecting a ground voltage elevation resulting from a flow of excess current through a grounding element;
- and
- coupling a negative voltage supply input to the grounding element in response to the detection;
- wherein the excess current flows through the grounding element due to an increment in a current consumption of a current consuming element of the device.
Dependencies are inferred from the claim text.