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. 30, 2015
Filed:
Apr. 10, 2013
Himax Analogic, Inc., Tainan, TW;
Kuan-Jen Tseng, Tainan, TW;
HIMAX ANALOGIC, INC., Tainan, TW;
Abstract
An error amplifier and a driving circuit are disclosed herein. The error amplifier is configured to charge a compensation capacitor with an error current. The error amplifier includes an input stage, a main output stage, and an auxiliary output stage. The input stage is configured to provide a first differential output signal and a second differential output signal in response to a comparison between a reference voltage and a feedback voltage. The main output stage is configured to charge the compensation capacitor. The auxiliary output stage is configured to be activated to charge the compensation capacitor. a first operation, both the main output stage and the auxiliary output stage charge the compensation capacitor. In a second operation, the main output stage charges the compensation capacitor, and the auxiliary output stage is deactivated and does not charge the compensation capacitor.