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:
Jul. 25, 2017
Filed:
Sep. 11, 2014
Applicant:
Amtek Semiconductor Co., Ltd., New Taipei, TW;
Inventors:
Assignee:
Amtek Semiconductor Co., Ltd., New Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/00 (2006.01); H02J 7/00 (2006.01); H02J 7/02 (2016.01); H03F 3/45 (2006.01); H03K 5/003 (2006.01); H03K 5/007 (2006.01);
U.S. Cl.
CPC ...
H02J 7/007 (2013.01); H02J 7/0077 (2013.01); H02J 7/025 (2013.01); H03F 3/45475 (2013.01); H03F 3/45762 (2013.01); H03F 2200/375 (2013.01); H03F 2200/78 (2013.01); H03F 2203/45048 (2013.01); H03F 2203/45078 (2013.01); H03F 2203/45212 (2013.01); H03F 2203/45588 (2013.01); H03F 2203/45594 (2013.01); H03F 2203/45604 (2013.01); H03K 5/003 (2013.01); H03K 5/007 (2013.01);
Abstract
A driving device with correction function is provided herein and utilizes a sensing resistor to detect the variation in an operation amplifier. A signal generated by an offset voltage correction circuit is fed back to the operation amplifier and the offset voltage of the abnormal input in the operation amplifier is corrected to be zero so as to keep the operation amplifier under the best performance condition. The driving device implements in the wireless charger driving system can enhance the accuracy of the current value and can achieve good output performance and better system stability.