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:
Dec. 28, 2021
Filed:
Mar. 01, 2019
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Shusuke Kawai, Fujisawa, JP;
KABUSHIKI KAISHA TOSHIBA, Minato-ku, JP;
Abstract
According to one embodiment, an electronic circuit includes: a current supply circuit, a detection circuit, a timing generation circuit, a sample hold circuit and a calculation circuit. The current supply circuit supplies a sine wave current for measurement to a gate terminal of a semiconductor switching device. The detection circuit detects a sine wave voltage generated in response to supply of the sine wave current to generate a detection signal. The timing generation circuit counts cycles of the sine wave voltage. The sample hold circuit samples the detection signal at a timing depending on a count value of the timing generation circuit. The calculation circuit calculates a gate resistance of the semiconductor switching device based on the sampled voltage.