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. 08, 2016
Filed:
Sep. 18, 2012
Nagasaki University, Nagasaki-shi, Nagasaki, JP;
Panasonic Corporation, Kadoma-shi, Osaka, JP;
Fujio Kurokawa, Nagasaki, JP;
Masahito Ohnishi, Kadoma, JP;
NAGASAKI UNIVERSITY, Nagasaki-Shi, Nagasaki, JP;
PANASONIC CORPORATION, Kadoma-Shi, Osaka, JP;
Abstract
In DC/DC converter circuit, the peak value of the reactor current is found based on output voltage and an input voltage, thereby, the operation with the predetermined electric current mode is thereby enabled. The AC/DC converter circuit is run with a predetermined current mode, the power factor improvement is accomplished. The first control partinputs a detected value of output voltage Eo, and a turn-off timing predicted value of switch Tr of the DC/DC converteris calculated. The first control partsends the calculation result to the switch drive signal generate part. The second control partinputs the detected value of the output voltage and the input voltage, and it receives the turn-off timing predicted value from the first control part. Even more particularly, the second control partcalculates the peak value of the reactor current of the DC/DC converterbased on the turn-off timing predicted value, and it calculates the time that the reactor current decreases to a predetermined preset value from the peak value as a turn-on timing predicted value.