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. 15, 2020
Filed:
Jan. 16, 2020
Mitsubishi Electric Corporation, Tokyo, JP;
Hiroshi Gokan, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
Provided is a gate drive circuit and a gate drive system, with which current unevenness among power devices connected in parallel can be reduced more. A gate drive circuit includes: an objective waveform generation unit configured to generate an objective waveform; a drive waveform generation unit configured to generate a drive waveform from the objective waveform, by referring to on-timing set information and off-timing set information; a drive control unit configured to drive the power device to turn the power device on/off, based on the drive waveform; a state detection unit configured to detect the state of the power device; a predicted waveform generation unit configured to generate a predicted waveform of a voltage; and an update unit configured to update the on-timing set information and the off-timing set information, based on the result of the state detection and the result of comparison to the predicted waveform.