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:
Aug. 12, 2025
Filed:
Oct. 31, 2023
Sigmastar Technology Ltd., Fujian, CN;
SIGMASTAR TECHNOLOGY LTD., Fujian, CN;
Abstract
A voltage detection device includes a voltage divider circuit, a comparator circuit and a switch control circuit. The voltage divider circuit operates in a first mode based on a switching signal and divides a power voltage to generate an input voltage. The comparator circuit compares the input voltage with a set of reference voltages to generate a detection signal. The switch control circuit selectively adjusts a switching signal according to the detection signal after a predetermined period has elapsed from power-on of the power voltage so as to control the voltage divider circuit to switch from operating in the first mode to operating in a second mode. The first mode corresponds to a first target level of the power voltage, the second mode corresponds to a second target level of the power voltage, and the first target level is higher than the second target level.