Invention Grant
- Patent Title: PFM control method for boost converters
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Application No.: US16793516Application Date: 2020-02-18
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Publication No.: US11264900B2Publication Date: 2022-03-01
- Inventor: Bogdan-Eugen Matei , Alessandro Molari , Fabio Ongaro , Giovanni Saccomanno , Hao Zhou
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Kowert, Hood, Munyon, Rankin & Goetzel, P.C.
- Agent Erik A. Heter
- Main IPC: H02M3/158
- IPC: H02M3/158 ; H02M1/00 ; H02M3/156

Abstract:
The present disclosure is directed to a pulse frequency modulation (PFM) control method for a boost converter and apparatus for carrying out the method. A boost converter includes an inductor and a transistor coupled thereto. A control circuit is arranged to control the transistor to cause current pulsed to be sourced through the inductor. When operating in a PFM mode, the control circuit may control the timing of pulses such that, at the beginning of a specified time period, current pulses may be sourced with no spacing between successive pulses. After a desired number of pulses have been sourced, no pulses are sourced for the remainder of the specified time period. Nevertheless, the number of pulses sourced over the time period corresponds to a desired average frequency of pulses.
Public/Granted literature
- US20210257911A1 PFM Control Method for Boost Converters Public/Granted day:2021-08-19
Information query
IPC分类: