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. 20, 2026
Filed:
Mar. 17, 2021
Kyosan Electric Mfg. Co., Ltd., Yokohama, JP;
KYOSAN ELECTRIC MFG. CO., LTD., Yokohama, JP;
Abstract
The present invention suppresses unevenness of an input/output current of a full bridge circuit, which is caused due to a cross current generated by a delay operation or the like of a switching element and unevenness of a driver voltage of each switching element, and suppresses an occurrence of an erroneous operation of an amplifier of a class-D full bridge circuit. A driver device of a class-D full bridge amplifier according to the present invention sets, at the same potential in terms of DC, reference potentials on a low-voltage side of two high-side driver circuits which drive two high-side switching elements which constitute a full bridge circuit, and suppresses an occurrence of unevenness of a driver voltage of the switching elements due to a cross current which flows between the bridge circuit and the high-side driver circuits. In the configuration in which a plurality of class-D full bridge amplifiers are driven, a driver power supply is individually provided to driver circuits which drive the class-D full bridge amplifiers, and cross currents which flow between the plurality of class-D full bridge amplifiers are suppressed.