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. 11, 2011
Filed:
May. 17, 2007
Matahiko Ikeda, Tokyo, JP;
Takahiro Urakabe, Tokyo, JP;
Kiyoharu Anzai, Tokyo, JP;
Akihiko Iwata, Tokyo, JP;
Hirotoshi Maekawa, Tokyo, JP;
Toshiyuki Kikunaga, Tokyo, JP;
Masaru Kobayashi, Tokyo, JP;
Tatsuya Okuda, Tokyo, JP;
Matahiko Ikeda, Tokyo, JP;
Takahiro Urakabe, Tokyo, JP;
Kiyoharu Anzai, Tokyo, JP;
Akihiko Iwata, Tokyo, JP;
Hirotoshi Maekawa, Tokyo, JP;
Toshiyuki Kikunaga, Tokyo, JP;
Masaru Kobayashi, Tokyo, JP;
Tatsuya Okuda, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
Three or more circuits including a driving inverter circuit and rectifier circuits are connected in series, each of the circuits including a high-voltage side MOSFET and a low-voltage side MOSFET connected in series as well as a smoothing capacitor having positive and negative terminals between which the MOSFETs are connected. LC series circuits, each including a capacitor and an inductor, are disposed individually between one specific circuit and the other circuits with periods of resonance of the LC series circuits made equal to one another. In performing DC/DC power conversion through charging and discharging operation of the capacitors, a resonance phenomenon of the LC series circuits is used to improve conversion efficiency and achieve a reduction in size of the apparatus structure.