公开(公告)号：US20240106328A1

公开(公告)日：2024-03-28

申请号：US17934398

申请日：2022-09-22

Applicant: Apple Inc.

Inventor： Andrea Acquas ,  Angelo Bassi ,  Federico Rossini ,  Nicola Rasera

IPC: H02M3/158 ,  H02M1/00 ,  H03L7/089

CPC classification number: H02M3/158 ,  H02M1/0009 ,  H03L7/0891

Abstract: A phase-locked loop (PLL)-based power converter is disclosed. A power converter includes a switch circuit having a switch node coupled to a regulated power supply node via an inductor and configured to source a supply current to the regulated power supply node using one or more control signals. A control circuit performs a phase-frequency comparison of a reference clock signal and a switching frequency of the switch circuit and generate a control voltage using results of the phase-frequency comparison. The control circuit further generates a control current using the control voltage, a voltage of the regulated power supply node, and a duty cycle of the switch circuit, and a demand current using the voltage level of the regulated power supply node and a reference voltage. Using the demand current, the control current, and a sensed version of the supply current, the control circuit generates the one or more control signals.