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. 18, 2005
Filed:
Mar. 17, 2004
Ken Matsuura, Chuo-ku, JP;
Takeshi Uematsu, Chuo-ku, JP;
Hiroshi Kawasaki, Chuo-ku, JP;
Takakazu Imai, Chuo-ku, JP;
Koichiro Miura, Chuo-ku, JP;
Ken Matsuura, Chuo-ku, JP;
Takeshi Uematsu, Chuo-ku, JP;
Hiroshi Kawasaki, Chuo-ku, JP;
Takakazu Imai, Chuo-ku, JP;
Koichiro Miura, Chuo-ku, JP;
TDK Corporation, Tokyo, JP;
Abstract
A controllerA for generating a drive signal PS for switching control of a switching element in a switching power supply, includes a duty ratio generatorfor detecting a duty ratio D of the drive signal PS for controlling the switching element of the switching power supply, and generating a signal corresponding to the duty ratio; a control signal generatorfor generating a control signal CS on the basis of a difference between a target voltage Vin the switching power supply and an output voltage Vdetected in the switching power supply; an operation unitfor generating a signal corresponding to a product of the signal corresponding to the duty ratio, and the control signal CS; and a drive signal generatorfor generating the drive signal PS on the basis of the signal generated by the operation unit