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. 13, 2011
Filed:
Jan. 28, 2010
Ke-horng Chen, Taipei County, TW;
Shih-jung Wang, Taipei, TW;
Yu-huei Lee, Taipei County, TW;
Yung-chih Lai, Miaoli County, TW;
Hsuan-yu Tsai, Taichung County, TW;
Ke-Horng Chen, Taipei County, TW;
Shih-Jung Wang, Taipei, TW;
Yu-Huei Lee, Taipei County, TW;
Yung-Chih Lai, Miaoli County, TW;
Hsuan-Yu Tsai, Taichung County, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A voltage converting circuit including a power stage, a filter, a comparator, a first and a second feedback units. The power stage receives an input voltage and outputs the input voltage according to a duty cycle. The filter receives the input voltage to convert the input voltage into a current, and filters the current to obtain an output voltage. The first feedback unit amplifies a difference between a reference voltage and the output voltage to obtain an error voltage. The second feedback unit calculates the quadratic differential and integration of the output voltage to obtain a sensing voltage. The comparator compares the error voltage and the sensing voltage, and outputs a comparing result to adjust a duty ratio. Herein, a ripple of the output voltage is linearly proportional to that of the current, and DC divided voltage level of the output voltage is substantially equal to the reference voltage.