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:
Mar. 23, 2004
Filed:
Oct. 31, 2002
Applicant:
Inventor:
Thekkemadathil V. Rajeevakumar, Scarsdale, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 1/575 ; H02M 3/156 ;
U.S. Cl.
CPC ...
G05F 1/575 ; H02M 3/156 ;
Abstract
In an integrated circuit having an on-chip power supply, a voltage maintenance circuit includes a decoupling capacitor connected between the output node and ground, a supplementary capacitor connected between a supplementary node and ground and a controllable transistor connected between the two capacitor nodes, so that when the output voltage drops below a threshold a reference circuit turns on the controllable transistor, thereby supplying extra charge to the output node and restoring it to its design voltage more quickly than the power supply could.