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:
Dec. 23, 2014
Filed:
Aug. 10, 2012
Michael R. Hsing, Saratoga, CA (US);
Eric Yang, Saratoga, CA (US);
Zheng Luo, Chengdu, CN;
Ken Yi, Chengdu, CN;
Yiqing Jin, Hangzhou, CN;
Yuancheng Ren, Hangzhou, CN;
Michael R. Hsing, Saratoga, CA (US);
Eric Yang, Saratoga, CA (US);
Zheng Luo, Chengdu, CN;
Ken Yi, Chengdu, CN;
Yiqing Jin, Hangzhou, CN;
Yuancheng Ren, Hangzhou, CN;
Monolithic Power Systems, Inc., San Jose, CA (US);
Abstract
An off-line regulator has a rectification circuit configured to rectify an AC line voltage into a rectified line voltage, a pass device coupled between the rectified line voltage and a first capacitor, and a converter. The pass device is configured to be turned ON or OFF according to a comparison signal indicating whether the rectified line voltage is over a threshold voltage. The first capacitor delivers an interim voltage into the converter which supplies power to a load. Wherein a second capacitor coupled across a driver which driving the pass device is charged by the first capacitor when the comparison signal is at a first state, and the driver is boosted when the comparison signal is at a second state.