Patent ID: 11863084
Assignee: APPLE INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A multi-output AC/DC adapter comprising:
a main power stage configured to receive power from an AC power source and deliver an intermediate output voltage;
a plurality of regulator stages, each regulator stage comprising a chopper circuit that receives the intermediate output voltage from the main power stage and produces a regulated output DC voltage for one of the multiple outputs of the multi-output AC/DC adapter; and
a controller coupled to the main power stage and each of the plurality of regulator stages, wherein the controller provides a voltage reference signal and a feedback signal to a feedback loop of the main power stage and wherein the feedback signal provided to the feedback loop of the main power stage is an output voltage of one of the regulator stages.