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

Claim 16:
17. A system comprising:
a load circuit configured to operate using a regulated supply voltage; and
a power converter configured to generate the regulated supply voltage on a supply voltage node, wherein the power converter includes:
a switching circuit including a high side switch and a low side switch coupled to one another at a switching node;
an inductor coupled between the switching node and the supply voltage node, wherein high side switch is configured to source respective charge current to the supply voltage node, via the inductor, during a plurality of active cycles; and
a control circuit configured to determine, for a particular active cycle, an average current through the inductor and further configured to deactivate, based on comparing the average current to a threshold value, the high side switch for an active cycle subsequent to the particular active cycle, wherein the control circuit is configured to determine the average current based on a voltage level of an input power supply node coupled to the high side switch, a voltage level on the supply voltage node, a peak current flowing in the inductor, and a duty cycle of the high side switch, wherein the high side switch is coupled between the input power supply node and the switching node.