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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.:

US 10680509 B1

PDFFull Text
Date of Patent:
Jun. 09, 2020

Filed:

Jun. 30, 2016

Current detection device for power semiconductor element

Applicant:

Fuji Electric Co., Ltd., Kawasaki-shi, Kanagawa, JP;

Inventor:

Akira Nakamori, Matsumoto, JP;

Assignee:

FUJI ELECTRIC CO., LTD., Kawasaki-Shi, Kanagawa, JP;

Attorney:

Rabin & Berdo, P.C.

Primary Examiner:

Lee E Rodak

Int. Cl.
CPC ...
H02M 1/32 (2007.01); G01R 19/00 (2006.01); G01R 17/16 (2006.01); H01L 29/739 (2006.01); H03K 17/0812 (2006.01); H02M 1/00 (2006.01); G01R 31/42 (2006.01);
U.S. Cl.
CPC ...
H02M 1/32 (2013.01); G01R 17/16 (2013.01); G01R 19/0092 (2013.01); H01L 29/7393 (2013.01); H03K 17/08128 (2013.01); G01R 31/42 (2013.01); H02M 2001/0009 (2013.01); H03K 2217/0027 (2013.01); H03K 2217/0072 (2013.01);
Abstract

A current detection device for a power semiconductor element includes an operational amplifier that fixes an emitter terminal of a sense IGBT to a voltage equal to or smaller than 1 volt of a reference voltage supply, and a current-voltage converter configured to flow in a resistor a current that is greater than and proportional to a current that flows into the operational amplifier from the sense IGBT. The current-voltage converter includes an NMOS transistor that operates with reference to an electric potential of a ground and a resistor provided at a high side of the NMOS transistor, in order to operate from the electric potential of the ground.

Find Patent Forward Citations

Nakamori, Akira. (2020). Current detection device for power semiconductor element (U.S. Patent No. 10680509). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10680509

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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