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:
Feb. 14, 2012
Filed:
Mar. 11, 2010
Daisuke Yamaguchi, Kamakura, JP;
Yuki Kamata, Fujisawa, JP;
Eiji Hori, Yokohama, JP;
Katsuyuki Omi, Kamakura, JP;
Daisuke Yamaguchi, Kamakura, JP;
Yuki Kamata, Fujisawa, JP;
Eiji Hori, Yokohama, JP;
Katsuyuki Omi, Kamakura, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A DC-DC converter has an error amplifier that amplifies a potential difference between a first voltage based on an output voltage at the output terminal and a reference voltage, and outputs a resultant error amplified signal; a differential detecting circuit that senses an inclination of a temporal change of the output voltage by differentiating the first voltage, outputs a control signal according to a result of the sensing; and a PWM generating circuit that compares a synthetic signal obtained by conducting computation on the amplified error signal and the control signal with a periodically changing comparison signal, and outputs a PWM signal having a duty ratio controlled according to a result of the comparison.