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.:

US 7724070 B1

PDF
Full Text
Expired
Date of Patent:
May. 25, 2010

Filed:

Dec. 16, 2005
Applicant:

Ikuo Fukami, Kanagawa, JP;

Inventor:

Ikuo Fukami, Kanagawa, JP;

Assignee:

NEC Electronics Corporation, Kawasaki, Kanagawa, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 3/18 (2006.01);
U.S. Cl.
CPC ...
Abstract

A charge charge-pump circuit according to an embodiment of the invention includes: a first boosting capacitor; a second boosting capacitor series-connected with the first boosting capacitor; a first boosting clock driver connected between the first boosting capacitor and the second boosting capacitor and boosting the first boosting capacitor; and a second boosting clock driver connected with the second boosting capacitor and boosting the first boosting capacitor and the second boosting capacitor after the first boosting clock driver boosts the first boosting capacitor.


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