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. 07, 2017
Filed:
Mar. 16, 2015
Fujitsu Semiconductor Limited, Yokohama-shi, Kanagawa, JP;
Satoshi Yamada, Kawasaki, JP;
FUJITSU SEMICONDUCTOR LIMITED, Yokohama, JP;
Abstract
A power switching circuit includes a current mirror circuit to generate mirror currents, by transferring, at different mirror ratios, monitored currents that are obtained by monitoring power supply voltages, a selector to select the mirror currents with a combination having the different mirror ratios for the monitored currents, according to a switching state of the power supply voltages, a comparator to compare the mirror currents selected by the selector and output a comparison result, and a switching circuit to switch a supply voltage to be supplied to a load to one of the power supply voltages, based on the comparison result.