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:
Nov. 28, 2023
Filed:
Nov. 06, 2019
Applicant:
Toshiba Mitsubishi-electric Industrial Systems Corporation, Chuo-ku, JP;
Inventor:
Hidenobu Tajima, Chuo-ku, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
H02M 7/537 (2006.01); H02M 1/088 (2006.01);
U.S. Cl.
CPC ...
H02M 7/537 (2013.01); H02M 1/088 (2013.01);
Abstract
A gate drive circuit of an uninterruptible power supply apparatus generates first and second gate drive signals in response to first and second PWM signals, and alternately turns on first and second IGBTs. When the first IGBT is on, the gate drive circuit sets the first gate drive signal to the 'L' level in response to the second PWM signal and sets the second gale drive signal to the 'H' level in response to a voltage across terminals of the first IGBT exceeding a threshold voltage.