The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 2020
Filed:
Feb. 23, 2017
Kyosan Electric Mfg. Co., Ltd., Yokohama-shi, Kanagawa, JP;
Itsuo Yuzurihara, Yokohama, JP;
Takeshi Fujiwara, Yokohama, JP;
Ryosuke Ohma, Yokohama, JP;
Hiroshi Kunitama, Yokohama, JP;
Satoshi Kawai, Yokohama, JP;
Ryota Suzuki, Yokohama, JP;
KYOSAN ELECTRIC MFG. CO., LTD., Yokohama-shi, JP;
Abstract
A chopper section of a power supply device includes a plurality of step-down chopper circuits, and multiphase control of the step-down chopper circuits is performed using gate signals having phases displaced from each other. This shortens the period with which output signals of the step-down chopper circuits are changed. Shortening the period reduces the amount of jitter resulting from a gap between the occurrence of a command signal and a sampling point that is a point in time at which a gate signal is generated. The number of phases of the gate signals equals the number of phases of the step-down chopper circuits. The control of the gate signal generator is asynchronous to feedback control by the controller. Points in time (sampling points) at which gate signals are generated are points in time of generation (sampling points) after a point in time at which the controller calculates a manipulated value.