US 12,445,031 B2
Converter apparatus and control method
Chukhung Chan, Shatin (CN)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Sep. 20, 2023, as Appl. No. 18/370,694.
Claims priority of application No. 202211165317.1 (CN), filed on Sep. 23, 2022.
Prior Publication US 2024/0106315 A1, Mar. 28, 2024
Int. Cl. H02M 3/156 (2006.01); H02M 1/00 (2006.01); H02M 1/14 (2006.01)
CPC H02M 1/0003 (2021.05) [H02M 3/156 (2013.01); H02M 1/14 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of controlling a converter apparatus including a first switching converter and at least one second switching converter connected in parallel between an input and an output and operable based on a first frequency modulation control signal and at least one second frequency modulation control signal, respectively, the method comprising:
determining an updated period of the first frequency modulation control signal and of the at least one second frequency modulation control signal based on the output;
for each second frequency modulation control signal of the at least one second frequency modulation control signal, at a beginning of each period of the first frequency modulation control signal, determining a phase shift of each second frequency modulation control signal relative to the first frequency modulation control signal, and changing a period of each second frequency modulation control signal based on the determined phase shift by:
when a difference between the phase shift and a target phase shift exceeds a predetermined threshold, determining the period of each second frequency modulation control signal as the updated period increased or decreased by a predetermined amplitude; and
when the difference between the phase shift and the target phase shift is less than or equal to the predetermined threshold, determining the period of each second frequency modulation control signal as the updated period.