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:
Oct. 14, 2014
Filed:
Nov. 28, 2013
Pulse width modulation signal generation circuit and pulse width modulation signal generation method
Applicants:
Jo-yu Wang, New Taipei, TW;
Wei-hsu Chang, New Taipei, TW;
Inventors:
Jo-Yu Wang, New Taipei, TW;
Wei-Hsu Chang, New Taipei, TW;
Assignee:
Richtek Technology Corporation, Zhubei, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/017 (2006.01); H03K 7/08 (2006.01);
U.S. Cl.
CPC ...
H03K 7/08 (2013.01);
Abstract
The present invention discloses a PWM signal generation circuit and a PWM signal generation method. The PWM signal generation circuit includes: a reference signal generation circuit for generating a reference signal according to an input voltage; a variable ramp signal generation circuit for generating a variable ramp signal; and a comparator circuit for comparing the reference signal with the variable ramp signal to generate a PWM signal. A rising slope and/or a falling slope of the variable ramp signal is variable.