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:
Sep. 06, 2005
Filed:
Aug. 22, 2003
David Chalmers Schie, Cupertino, CA (US);
Alexander Mednik, Campbell, CA (US);
James Hung Nguyen, San Jose, CA (US);
Sang Ton Ngo, Cupertino, CA (US);
Khai Minh Le, Saratoga, CA (US);
Wei Gu, San Jose, CA (US);
Larry Kerenyi, White Plains, NY (US);
David Chalmers Schie, Cupertino, CA (US);
Alexander Mednik, Campbell, CA (US);
James Hung Nguyen, San Jose, CA (US);
Sang Ton Ngo, Cupertino, CA (US);
Khai Minh Le, Saratoga, CA (US);
Wei Gu, San Jose, CA (US);
Larry Kerenyi, White Plains, NY (US);
Supertex, Inc., Sunnyvale, CA (US);
Abstract
A switch state controller generating a pulse train is used in a power converter utilizing a plurality of converter stages all simultaneously controlled by a single switch controlled by said pulse train. On time of the pulse train is controlled according to an input or interim node characteristic of the supply and period is controlled by a characteristic of the output of the converter. This allows development of AC-to-DC converters, including power-factor-correction converters, and DC to DC converters with high conversion ratio with minimal parts count & high reliability.