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. 29, 2019
Filed:
Mar. 01, 2019
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Minato-ku, Tokyo, JP;
Toshiyuki Ogawa, Kawasaki Kanagawa, JP;
Fumi Moritsuka, Kawasaki Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Abstract
According to one embodiment, an AC/DC converter includes a switching element that responds to a drive signal. The drive signal is generated from a three-level PWM signal that is generated from a two-level PWM signal generated from a voltage of an AC power supply and a reference signal. When a polarity of the voltage of the AC power supply is inverted, the AC/DC converter generates the drive signal by using a two-level PW signal obtained by inverting a duty ratio of a two-level PWM signal during a period just before an inversion of the polarity of the voltage of the AC power supply.