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.

Date of Patent:
Aug. 08, 2017

Filed:

Feb. 23, 2016
Applicant:

Kabushiki Kaisha Toshiba, Tokyo, JP;

Inventor:

Hironori Nagasawa, Yokohama Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/158 (2006.01); H02M 3/156 (2006.01); G05F 5/00 (2006.01);
U.S. Cl.
CPC ...
G05F 5/00 (2013.01);
Abstract

A power-supply voltage sensing circuit includes a switch circuit having an input connected to a power supply and an output connected to a main circuit, a first circuit that outputs a first signal controlling ON/OFF of the switch circuit in accordance with a power-supply voltage supplied by the power supply, a second circuit that delays the first signal and outputs the delayed first signal as a second signal, a first transistor that outputs a first voltage in accordance with the second signal from the second circuit, a third circuit that outputs a reference voltage when supplied with the power-supply voltage, and a comparison circuit that outputs a third signal that controls whether or not the main circuit is operated in accordance with the first voltage and the reference voltage.


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