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. 11, 2005
Filed:
Dec. 23, 2003
Applicants:
Kyouichi Takagawa, Isesaki, JP;
Kozo Sakamoto, Hitachinaka, JP;
Nobuyoshi Matsuura, Takasaki, JP;
Masashi Koyano, Takasaki, JP;
Inventors:
Kyouichi Takagawa, Isesaki, JP;
Kozo Sakamoto, Hitachinaka, JP;
Nobuyoshi Matsuura, Takasaki, JP;
Masashi Koyano, Takasaki, JP;
Assignee:
Renesas Technology Corp., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K 702 ; H05K 706 ; H05K 708 ; H05K 710 ;
U.S. Cl.
CPC ...
Abstract
Disclosed is a technique capable of improving a power supply efficiency in a power supply circuit. A power MOSFET in a high side of a combined power MOSFET constituting a DC-DC converter is constituted of a horizontal MOSFET, and a power MOSFET in a low side thereof is constituted of a vertical MOSFET.