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:
Mar. 26, 2019
Filed:
Mar. 16, 2018
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Minato-ku, Tokyo, JP;
Tatsuhiko Maruyama, Kawasaki Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Abstract
According to an embodiment of the present invention, a power supply device includes a switching circuit, a detection circuit, a first comparator, a current source circuit, and a delay circuit. The switching circuit performs switching control of a power supply voltage. The detection circuit detects an output voltage from the switching circuit. The first comparator compares the voltage detected by the detection circuit with a first reference voltage which is set in advance. The current source circuit outputs a bias current which has correlation with the power supply voltage. The delay circuit receives the bias current from the current source circuit, and outputs, to the switching circuit, a delay time which corresponds to an increase time of the output voltage, by using the bias current in accordance with the result of comparison performed by the first comparator.