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:
Jan. 19, 2016
Filed:
Jul. 25, 2012
Takeshi Usuda, Toyama, JP;
Yoshiki Matsuo, Hachioji, JP;
Takeshi Usuda, Toyama, JP;
Yoshiki Matsuo, Hachioji, JP;
COSEL CO. LTD., Toyama-Shi, Toyama, JP;
Abstract
A control circuit () includes a calculation means () which determines ON time and OFF time of a main switching element () and a drive pulse generating means () which generates drive pulses that turn the main switching element () ON and OFF. A control function formula which prescribes a relationship between an output voltage (Vo) and an output differential value (Vd) by a negative linear function and the like is defined in the calculation means (). The calculation means () samples an input voltage signal (Vi) and an output voltage signal (Vo) at a timing synchronized with a switching cycle of the main switching element (), and calculates the ON time and OFF time of the main switching element () thereafter so as to satisfy the control function formula. The drive pulse generating means () generates drive pulses (V) which turn the main switching element () ON and OFF on the basis of the ON and OFF time determined by the calculation means ().