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:
Feb. 09, 2010
Filed:
Oct. 26, 2006
Takakazu Imai, Tokyo, JP;
Takeo Gokita, Tokyo, JP;
Takakazu Imai, Tokyo, JP;
Takeo Gokita, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A DC-DC converter has a switching circuit including switching elements at the high-side and at the low-side, an inductor connected to the output end of the switching circuit, a smoothing capacitor connected to the inductor, a switching control circuit for supplying a switching pulse to the switching elements, and a circuit. The circuit detects that a state that the switching element at the high side is switched off and the switching element at the low side is switched on is maintained for a predetermined period or longer. In this case, the circuit forcibly switches off the switching element at the low side.