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:
Dec. 15, 2009
Filed:
Jul. 07, 2008
Keigo Ootani, Kanagawa, JP;
Keigo Ootani, Kanagawa, JP;
NEC Electronics Corporation, Kawasaki, Kanagawa, JP;
Abstract
A boosting circuit includes a boosting capacitor to which an input voltage is applied; a smoothing capacitor to which a boosted voltage is applied; a discharging MOS transistor configured to connect said boosting capacitor and said smoothing capacitor in a discharging operation during a boosting operation period such that charge stored in said boosting capacitor is discharged to said smoothing capacitor; and a charging MOS transistor configured to apply the input voltage to said boosting capacitor in a charging operation during the boosting operation period to charge up said charging capacitor. A back gate of said charging MOS transistor and a back gate of said discharging MOS transistor are connected to a common node, and said common node is connected to different voltages in the charging operation and the discharging operation.