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. 25, 2012
Filed:
Aug. 13, 2008
Chih Yueh Yen, Hsinchu, TW;
Chih Yueh Yen, Hsinchu, TW;
Advanced Analog Technology, Inc., Science-Based Industrial Park, Hsinchu, TW;
Abstract
A control circuit comprises a PWM control circuit and a PWM skip control circuit. The PWM control circuit controls a switching circuit. The switching circuit acts as a current source for an output circuit and a load circuit. The PWM skip control circuit controls the operation of the PWM control circuit. When the output current of the switching circuit is below a predetermined threshold, the PWM skip control circuit stops the operation of the PWM control circuit. When the output voltage of the switching circuit is below a predetermined threshold, the PWM skip control circuit resumes the operation of the PWM control circuit.