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:
Nov. 13, 2007
Filed:
Sep. 13, 2006
Applicant:
Noriaki Yoshikawa, Yokohama, JP;
Inventor:
Noriaki Yoshikawa, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/613 (2006.01); G05F 1/656 (2006.01);
U.S. Cl.
CPC ...
Abstract
According to the present invention, a semiconductor device is provided wherein a stepdown-type DC-DC converter includes a first off detection circuit, a second off detection circuit, a capacitor, a capacitor, a diode, inverters, an inductor, a first level shift circuit, a second level shift circuit, a third level shift circuit, a 2-input NAND circuit, a 2-input NAND circuit, a high-side N-channel power MOS transistor and a low-side N-channel power MOS transistor. The first off detection circuit and the second off detection circuit reduce fall times of the gates of the N-channel power MOS transistors, thereby reducing dead time.