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. 24, 2006
Filed:
Jan. 23, 2004
Yasunori Muramatsu, Tokyo, JP;
Tetsuo Tateishi, Manchester, NH (US);
Yasunori Muramatsu, Tokyo, JP;
Tetsuo Tateishi, Manchester, NH (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A charge pump DC/DC converter having an improved the ripple characteristic in its output voltage and make it possible to adjust the boosting rate in a stepwise manner. In phase I, two flying capacitors C, Care connected in series between voltage input terminaland voltage output terminal. In this connection state, flying capacitor Cis charged by the current supplied from DC power supply, while flying capacitor Cdischarges to the load side. In phase II, flying capacitor Cis connected between voltage input terminaland voltage output terminal, while flying capacitor Cis connected between voltage input terminaland the ground potential. In this connection state, flying capacitor Cdischarges to the load side, while flying capacitor Cis charged by the current supplied from DC power supply