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:
Oct. 24, 2017
Filed:
Jun. 10, 2014
Rohm Co., Ltd., Kyoto-shi, Kyoto, JP;
Masashi Hayashiguchi, Kyoto, JP;
Kazuhide Ino, Kyoto, JP;
ROHM CO., LTD., Kyoto, JP;
Abstract
Provided is an electronic circuit capable of preventing a switching device from breakage when a short-circuit occurs. When a gate control signal CGis inverted from an L level to an H level, a first switching circuitselects a first input terminal a, and connects an output terminal d to the first input terminal a, whereby turning on a MOSFET. When a predetermined time Tx elapses after the output terminal d of the first switching circuitis connected to the first input terminal a, a second switching circuitselects a first input terminal e, and connects an output terminal g to the first input terminal e. Furthermore, immediately after the connection, the first switching circuitselects a second input terminal b, and connects the output terminal d to the second input terminal b. Consequently, immediately after the MOSFETis turned on, a gate resistor is switched from a first gate resistorhaving a small resistance value to a second gate resistorhaving a large resistance value.