Patent ID: 11870345
Assignee: APPLE INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. An apparatus, comprising:
a switch circuit including a plurality of devices, a capacitor, and a switch node coupled to a regulated power supply node via an inductor, wherein the switch circuit is configured to:
couple, during a first time period of a first cycle of a particular switching sequence, the capacitor between an input power supply node and the switch node using a first subset of the plurality of devices;
couple, during a second time period of the first cycle of the particular switching sequence, the capacitor between the switch node and a ground supply node using a second subset of the plurality of devices; and
couple, during a third time period of the first cycle of the particular switching sequence, the switch node to the input power supply node using a third subset of the plurality of devices; and

a control circuit configured to adjust a duration of the third time period based on a voltage level of the input power supply node, a voltage level of the regulated power supply node, a value of the inductor, and respective durations of first time period and the second time period.