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. 12, 2010
Filed:
Jun. 03, 2008
Satoshi Sugahara, Matsumoto, JP;
Kouhei Yamada, Matsumoto, JP;
Tetsuya Kawashima, Matsumoto, JP;
Akira Yamazaki, Tokyo, JP;
Satoshi Sugahara, Matsumoto, JP;
Kouhei Yamada, Matsumoto, JP;
Tetsuya Kawashima, Matsumoto, JP;
Akira Yamazaki, Tokyo, JP;
Fuji Electric Systems Co., Ltd., Tokyo, JP;
Abstract
A DC-DC converter includes a series circuit of a main switch and a choke coil and an output capacitor connected to one end of the series circuit and outputs a DC voltage from the one end of the series circuit. A first MOS transistor is connected in parallel to the series circuit and a second MOS transistor is connected in parallel to the output capacitor. A control circuit controls the gate voltages of the first MOS transistor and/or the second MOS transistor so that the first MOS transistor and/or the second MOS transistor outputs a changed target output voltage, whereby the output voltage is made equal to the target voltage at high speed.