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:
Sep. 17, 2002
Filed:
Aug. 13, 2001
Applicant:
Inventors:
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/158 ;
U.S. Cl.
CPC ...
H02M 3/158 ;
Abstract
It is an object to enhance a breakdown voltage without requiring a complicated manufacturing process while maintaining a stable operation. A control signal (A) output from an MCU ( ) is transmitted to a driving circuit ( ) for driving a power switching element ( ) of an upper arm through two-stage level shift circuits. The level shift circuit in a first stage is constituted by a series circuit of a switching element ( ) and a resistive element ( ), and the level shift circuit in a second stage is constituted by a series circuit of a switching element ( ) and a resistive element ( ).