公开(公告)号：US20250112550A1

公开(公告)日：2025-04-03

申请号：US18477726

申请日：2023-09-29

Applicant: Apple Inc.

Inventor： Rajarshi Paul ,  Parin Patel ,  Daniel P Kumar ,  Jason M Rau

IPC: H02M3/155

Abstract: A power system for powering a pulsed load that intermittently delivers current pulses can include: an energy reservoir; a first DC-DC converter having an input that receives an input voltage and an output coupled to the energy reservoir; a second DC-DC converter having an input coupled to the energy reservoir and an output couplable to the pulsed load; and control circuitry that operates the first DC-DC converter to charge the energy reservoir from a minimum or valley voltage to a maximum or peak voltage during a charging window just prior to a current pulse of the pulsed load so that the first DC-DC converter is at or near its maximum output current at a beginning of the current pulse of the pulsed load.