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:
Sep. 06, 2022
Filed:
Aug. 24, 2020
Fuji Electric Co., Ltd., Kawasaki, JP;
Yoshinori Kobayashi, Matsumoto, JP;
Jian Chen, Matsumoto, JP;
FUJI ELECTRIC CO., LTD., Kawasaki, JP;
Abstract
A switching control circuit for controlling a power supply circuit having a transformer and a transistor. The switching control circuit is configured to operate based on a power supply voltage that corresponds to a voltage from an auxiliary coil of the transformer. The switching control circuit includes a drive signal output circuit that outputs a drive signal that corresponds to an operation mode of the power supply circuit, the operation mode including a burst mode, a drive circuit that performs switching of the transistor based on the drive signal outputted by the drive signal output circuit, and a control circuit that outputs, to the drive signal output circuit, a control signal for operating the power supply circuit in the burst mode, when a first transition condition or a second transition condition is satisfied, the first transition condition including time as a condition, and the second transition condition not including time as a condition.