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:
Jan. 21, 2020
Filed:
Aug. 31, 2018
Rohm Co., Ltd., Kyoto, JP;
Hiroyuki Hatano, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
An AC-DC converterhas, e.g.: a primary windingto which an alternating-current input voltage Vi is applied; a secondary windingmagnetically coupled with the primary winding; a bidirectional switchconnected in series with the primary winding; a resonance capacitorconnected in parallel with at least one of the bidirectional switchand the primary winding; a resonance inductance component (e.g., a coil); a full-wave rectification circuitperforming full-wave rectification on an induced voltage appearing in the secondary winding; and a smoothing capacitorsmoothing the output of the full-wave rectification circuit. The alternating-current input voltage Vi is converted directly into a direct-current output voltage Vo, with both a forward voltage and a flyback voltage extracted from the secondary winding. The converterfurther has a switchswitching the number of turns of the primary winding.