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. 29, 2013
Filed:
Dec. 16, 2009
Hajime Katsushima, Osaka, JP;
Toshikazu Fujiyoshi, Osaka, JP;
Kenji Morimoto, Osaka, JP;
Hajime Yamamoto, Osaka, JP;
Satoshi Yamamura, Osaka, JP;
Hajime Katsushima, Osaka, JP;
Toshikazu Fujiyoshi, Osaka, JP;
Kenji Morimoto, Osaka, JP;
Hajime Yamamoto, Osaka, JP;
Satoshi Yamamura, Osaka, JP;
Sansha Electric Manufacturing Co., Ltd., Osaka, JP;
Abstract
This DC-DC converter circuit includes: first and second switching elements (S, S); an output transformer (T) that includes a first primary winding (P) connected in series between the positive electrode sides of the first and second switching elements (S, S), a second primary winding (P) connected in series between their negative electrode sides, a secondary winding (S) for obtaining an output voltage, and tertiary windings (n, n); a first voltage source (C), connected between a first connection point at which the first primary winding (P) is connected to the second switching element (S) and the first switching element (S), that applies a voltage to the first switching element via the first primary winding; a second voltage source (C) connected to locations symmetric with those of the first voltage source (C); and a control unit (CT) that turns the first and second switching elements (S, S) alternatingly ON and OFF, and first and second regeneration snubber circuits (SN, SN) for regenerating the charge in snubber capacitors (C, C) to the voltage sources (C, C); and these regeneration snubber circuits (SN, SN) include third and fourth switching elements (S, S) driven by the output voltages of the tertiary windings (n, n).