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:
Apr. 22, 2014
Filed:
Jul. 27, 2009
Kuan-jen Tseng, Sinshih Township, Tainan County, TW;
Ching-wei Hsueh, Sinshih Township, Tainan County, TW;
Kuan-Jen Tseng, Sinshih Township, Tainan County, TW;
Ching-Wei Hsueh, Sinshih Township, Tainan County, TW;
Himax Analogic, Inc., Sinshih Township, Tainan County, TW;
Abstract
A current regulating circuit includes a transistor and an operational amplifier. The transistor receives a load current and generates a feedback voltage corresponding to the load current. The operational amplifier receives a reference voltage and the feedback voltage to control the transistor. The operational amplifier further includes an input stage and an output stage. The input stage includes amplifier inputs each for alternately receiving the reference voltage and the feedback voltage so that the input stage generates operating voltages corresponding to the reference voltage and the feedback voltage. The output stage receives the operating voltages alternately to control the transistor. A driver and a method of current regulation are also disclosed herein.