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. 01, 2007
Filed:
Feb. 15, 2005
Applicants:
Hirokazu Kasuya, Nukata-gun, JP;
Koji Numazaki, Nukata-gun, JP;
Mitsuhiro Saitou, Obu, JP;
Yutaka Fukuda, Kariya, JP;
Nobumasa Ueda, Nagoya, JP;
Inventors:
Hirokazu Kasuya, Nukata-gun, JP;
Koji Numazaki, Nukata-gun, JP;
Mitsuhiro Saitou, Obu, JP;
Yutaka Fukuda, Kariya, JP;
Nobumasa Ueda, Nagoya, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 19/0175 (2006.01);
U.S. Cl.
CPC ...
Abstract
In order to protect semiconductor switching-devices employed in an H bridge circuit against an over-voltage without using a special protection circuit, a control circuit outputs a control signal to a driving circuit for driving the H bridge circuit in order to turn off FETs serving as the semiconductor switching-devices when an over-voltage detection circuit detects the over-voltage applied to the H bridge circuit.