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:
May. 31, 2016
Filed:
Dec. 26, 2012
Applicant:
Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;
Inventor:
Hiroshi Itoh, Osaka, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 1/595 (2006.01); H02M 1/088 (2006.01); H02M 3/158 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
G05F 1/595 (2013.01); H02M 1/088 (2013.01); H02M 3/158 (2013.01); H02M 2001/0054 (2013.01); Y02B 70/1491 (2013.01);
Abstract
A switching power supply circuit includes a pair of input nodes to which an input voltage is applied, a pair of output nodes from which an output voltage is outputted and to which a load is connected, a cascode element and a coil connected between the input node and the output node, and a control circuit outputting a drive signal that controls a conduction state of the cascode element. The control circuit controls the conduction state of the cascode element in response to a potential of a point connecting a normally-on type transistor and a normally-off type transistor that constitute the cascode element.