Patent ID: 11876383
Assignee: APPLE INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. A wireless power receiving device, comprising:
a wireless charging coil having a first coil terminal and a second coil terminal;
a rectifier having a first pull-down switch, a second pull-down switch, a first pull-up switch, and a second pull-up switch;
a capacitor having a first terminal coupled to a first node between the first pull-down switch and the first pull-up switch and having a second terminal coupled to a second node between the second pull-down switch and the second pull-up switch; and
voltage regulator circuitry configured to receive a voltage across the capacitor and a rectifier output voltage output from the rectifier, wherein the voltage regulator circuitry is configured to raise the rectifier output voltage closer to a set point voltage level by activating the pull-down switches without activating the pull-up switches when the voltage across the capacitor crosses zero volt.