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

Claim 0:
1. An apparatus comprising:
a switching circuit coupled to an input power supply node and a regulated power supply node via an inductor, wherein the switching circuit is configured to source respective charge current to the regulated power supply node during a plurality of active cycles; and
a control circuit configured to:
determine, for a particular active cycle, an average inductor current, wherein to determine the average inductor current, the control circuit is further configured to determine the average inductor current 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;
perform a comparison of the average inductor current to a threshold value; and
deactivate, based on results of the comparison, the switching circuit for a different active cycle subsequent to the particular active cycle.