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:
Jun. 05, 2012
Filed:
Oct. 17, 2005
Applicants:
Dongsheng Zhou, San Jose, CA (US);
Kent Kernahan, Cupertino, CA (US);
Milton D. Ribeiro, Los Altos, CA (US);
Inventors:
Dongsheng Zhou, San Jose, CA (US);
Kent Kernahan, Cupertino, CA (US);
Milton D. Ribeiro, Los Altos, CA (US);
Assignee:
Exar, Inc., Fremont, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A power converter circuit senses the output voltage (Vo) and controls the converter's duty cycle (d) to provide a steady output current (Io) or input power (Pin) in each switching cycle (T). During an initial period (Tramp), the controller provides a possibly smaller target current (Iramp) to reduce the system stress while the output voltage rises to a suitable value (InitVtar).