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:
Apr. 14, 2020
Filed:
Jan. 05, 2018
Realtek Semiconductor Corp., Hsinchu, TW;
REALTEK SEMICONDUCTOR CORP., Hsinchu, TW;
Abstract
An operating voltage switching device includes a first current mirror circuit generating a corresponding sensing current according to an input current; a comparator comparing a reference voltage with a voltage at a node of the first current mirror circuit to generate a comparison signal; a first power domain providing a first output current to an internal circuit according to the sensing current; a second power domain providing a second output current to the internal circuit according to the sensing current; and a power domain selecting circuit, which is coupled to the comparator, the first power domain and the second power domain, and selects to enable the first power domain or the second power domain according to the comparison signal; wherein the sensing current is not greater than the input current.