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. 02, 2008
Filed:
Aug. 25, 2005
Applicants:
Kaiwei Yao, San Jose, CA (US);
Wei Chen, Campbell, CA (US);
David Meng, Los Altos, CA (US);
Inventors:
Assignee:
Monolithic Power Systems, Inc., San Jose, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02M 7/5387 (2007.01);
U.S. Cl.
CPC ...
Abstract
Control methods and apparatus are disclosed for operating an inverter at resonant mode, where the inverter adapts its frequency to the resonant tank characteristics before a lamp is struck, and operates at fixed frequency after the lamp is struck. Disclosed embodiments combine the advantages of operation in fixed mode as well as the variable mode.