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. 09, 1990
Filed:
Jun. 20, 1988
Applicant:
Inventors:
Teruyoshi Mihara, Yokosuka, JP;
Yukitsugu Hirota, Kamakura, JP;
Yukio Hiramoto, Tokyo, JP;
Tsutomu Matsushita, Yokohama, JP;
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 2313 ; 357 41 ; 357 35 ; 357 234 ; 357 51 ; 361 91 ;
Abstract
A power MOSFET is provided with a protective circuit including a monitor MOSFET whose drain is connected with the drain of the power MOSFET, a monitor resistor connected betwen the sources of the power and monitor MOSFETs, and a monitor transistor for decreasing a gate voltage of the power MOSFET when a voltage across the monitor resistor exceeds a predetermined level representing a dangerous condition of the device.