Patent ID: 11863058
Assignee: APPLE INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 10:
11. A method comprising:
sourcing, by a switching circuit using an input power supply node, respective charge currents to a regulated power supply node during a plurality of active cycles, wherein the switching circuit is coupled to the regulated power supply node via an inductor;
determining, by a control circuit, an average inductor current for a particular active cycle of the plurality of active cycles, wherein determining the average inductor current comprises the control circuit using a voltage level of the input power supply node, a voltage level of the regulated power supply node, a peak current flowing in the inductor, and a duty cycle of a high-side switch included in the switching circuit, wherein the high-side switch is coupled between the input power supply node and the inductor;
performing, by the control circuit, a comparison of the average inductor current to a threshold value; and
deactivating, by the control circuit and based on a result of the comparison, the switching circuit for a different active cycle of the plurality of active cycles, wherein the different active cycle is subsequent to the particular active cycle.