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:
Mar. 29, 2011
Filed:
Oct. 14, 2008
Hideki Asuke, Niiza, JP;
Hideharu Takano, Niiza, JP;
Masaki Kanazawa, Niiza, JP;
Mamoru Tsuruya, Niiza, JP;
Masayoshi Yamamoto, Matsue, JP;
Hiroyuki Horii, Matsue, JP;
Shigeyuki Funabiki, Matsue, JP;
Hideki Asuke, Niiza, JP;
Hideharu Takano, Niiza, JP;
Masaki Kanazawa, Niiza, JP;
Mamoru Tsuruya, Niiza, JP;
Masayoshi Yamamoto, Matsue, JP;
Hiroyuki Horii, Matsue, JP;
Shigeyuki Funabiki, Matsue, JP;
Sanken Electric Co., Ltd., Niiza-shi, JP;
Shimane University, Matsue-shi, JP;
Abstract
A current-mode controlled DC-DC converter includes a comparator comparing a first or second current detection signal with a first or second reference current that is based on an error voltage of a voltage detection signal, a pulse generator generating a first pulse signal whose ON time is longer than an interval between when the second current detection signal reaches a minimum value and when the second current detection signal reaches the second reference current, a pulse generator generating a second pulse signal whose ON time is longer than an interval between when the first current detection signal reaches a minimum value and when the first current detection signal reaches the first reference current, the second pulse signal being behind the first pulse signal by a half period, and a PWM circuit generating a first or second PWM signal according to the pulse signal and an output signal from the comparator, thereby turning on/off a switch.