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. 28, 2014
Filed:
Feb. 25, 2009
Toshikazu Fujiyoshi, Osaka, JP;
Hajime Katsushima, Osaka, JP;
Kenji Morimoto, Osaka, JP;
Satoshi Yamamura, Osaka, JP;
Toshikazu Fujiyoshi, Osaka, JP;
Hajime Katsushima, Osaka, JP;
Kenji Morimoto, Osaka, JP;
Satoshi Yamamura, Osaka, JP;
Sansha Electric Manufacturing Co., Ltd., Osaka, JP;
Abstract
A DC-DC converter includes a regeneration snubber circuit. The snubber circuit is connected in parallel with the secondary diode circuit and includes a series circuit of a discharge blocking diode, a snubber capacitor, and a switching element for regeneration connected in parallel with the discharge blocking diode. The DC-DC converter further includes a control unit which turns the switching element for regeneration on a predetermined time period after the timing of turning the primary side switching element off. The predetermined time period is set to approximately the time period during which the charge, accumulated in the snubber capacitor due to reverse recovery time when one of the secondary diodes has been turned off, discharges.