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.

Date of Patent:
Dec. 06, 2016

Filed:

Mar. 22, 2013
Applicant:

Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;

Inventor:

Kazuya Abe, Osaka, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 17/22 (2006.01); H03K 17/0812 (2006.01); H03K 17/10 (2006.01);
U.S. Cl.
CPC ...
H03K 17/223 (2013.01); H03K 17/08122 (2013.01); H03K 17/102 (2013.01);
Abstract

A cascode circuit () is provided with a switching element (Q) which is normally off by default, a switching element (Q) and a clamp circuit (). A source of the switching element (Q) is connected to a drain of the switching element (Q). The cascode circuit () engages in a normally-off operation through a gate driving circuit () connected to a gate of the switching element (Q). The clamp circuit () is provided between a power source terminal (P) of the gate driving circuit () and the drain of the switching element (Q). A power source (E) is connected to the power source terminal (P). When the gate driving circuit () operates to turn off the switching element (Q) and the switching element (Q), the clamp circuit () clamps a voltage between the drain and the source of the switching element (Q) to a power source voltage (V) supplied from the power source (E).


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