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. 10, 2012
Filed:
Oct. 29, 2007
Kyoichiro Araki, Kyoto, JP;
Hironori Nakahara, Kyoto, JP;
Yoshinori Imanaka, Kyoto, JP;
Isao Yamamoto, Kyoto, JP;
Kyoichiro Araki, Kyoto, JP;
Hironori Nakahara, Kyoto, JP;
Yoshinori Imanaka, Kyoto, JP;
Isao Yamamoto, Kyoto, JP;
Rohm Co., Ltd., , JP;
Abstract
A control circuitaccording to the present invention transits to a first current limiter mode when an output current of a DC-DC converter circuit reaches an upper limit current or greater in a normal mode; transits to the normal mode when the output current falls below the upper limit current in the first current limiter mode; transits to a second current limiter mode when a first predetermined period elapses without a transition to the normal mode in the first current limiter mode; and transits to the normal mode when a second predetermined period elapses in the second current limiter mode.