Power Supply Scheme for Reduced Power Compensation
AssigneeInfineon Technologies AG
InventorsChristian Grewing, Stefan Heinrich van Waasen
Life of this patent
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Abstract
A power control system is described that reuses current from segregated circuits of the mobile device. In some embodiments, the segregated circuits (or “sections”) can be “stacked” in series (with respect to the power supply) such that power is more efficiently used. The power can be more efficiently used by arranging a first section to reuse current that supplies power to a second section. A power control unit can be used to control regulators
Claims20
A system for controlling power for a first section of circuitry and a second section of circuitry that are powered from a power supply terminal and a ground return terminal, the system comprising:
- a first regulator coupled between the power input terminal and an intermediate node, wherein the first section of circuitry is coupled between the power input terminal and the intermediate terminal;
- a second regulator coupled between the intermediate node and the ground return terminal, wherein the second section of circuitry is coupled between the intermediate node and the ground return terminal;
- and
- a power controller for controlling the first regulator in response to a first current flow signal that indicates current flow in the first section of circuitry, and for controlling the second regulator in response to a second current flow signal that indicates current flow in the second section of circuitry.
A system for controlling power for a first section of circuitry and a second section of circuitry that are powered from a first supply terminal and a second return terminal, comprising:
- a power control unit for evaluating a first signal that indicates a magnitude of a first current that is drawn by the first section of circuitry, and for evaluating a second signal that indicates a magnitude of a second current that is drawn by the second section of circuitry wherein the first current comprises the second current and/or the second current comprises the first current;
- a first regulator for providing a third current to be summed with the second current when the first current is greater than the second current, whereby the third current is drawn by the second section of circuitry;
- and
- a second regulator for providing a fourth current to be summed with the first current when the second current is greater than the first current, whereby the fourth current is drawn by the first section of circuitry.
A method for controlling power for a first section of circuitry and a second section of circuitry, comprising:
- evaluating a first signal that indicates a magnitude of a first current that is drawn by the first section of circuitry;
- evaluating a second signal that indicates a magnitude of a second current that is drawn by the second section of circuitry wherein the current, wherein the first current is comprises the second current and/or the second comprises the first current;
- in response to the first and second evaluations, determining the greater of the first and second currents;
- if the first current is greater than the second current, adding a third current to the second current such that the third current is drawn by the second section of circuitry;
- and
- if the second current is greater than the first current, adding a fourth current to first circuit such that the third current is drawn by the first section of circuitry.
Dependencies are inferred from the claim text.