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:
Aug. 15, 2006
Filed:
Dec. 16, 2005
Shinichi Yoshida, Takasaki, JP;
Tomohiro Tazawa, Maebashi, JP;
Takashi Sase, Hitachi, JP;
Kouji Tateno, Hitachi, JP;
Shinichi Yoshida, Takasaki, JP;
Tomohiro Tazawa, Maebashi, JP;
Takashi Sase, Hitachi, JP;
Kouji Tateno, Hitachi, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
There is provided a switching power supply device of hysteresis current mode control system which assures excellent response characteristic for change of output current and reduction of power consumption. In a switching regulator of hysteresis current mode control system, a sense resistor connected in series to a coil is eliminated, a serially connected resistor and a capacitor are connected in parallel to a coil in place of such sense resistor. Thereby, a potential of a connection node of these resistor and capacitor is inputted to a comparator circuit having the hysteresis characteristic for comparison with the reference voltage. Accordingly, a switch may be controlled for ON and OFF states.