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:
Oct. 02, 2018
Filed:
Sep. 21, 2015
Silicon Laboratories Inc., Austin, TX (US);
Mohamed Mostafa Elsayed, Austin, TX (US);
Kenneth W. Fernald, Austin, TX (US);
Axel Thomsen, Austin, TX (US);
Silicon Laboratories Inc., Austin, TX (US);
Abstract
A method includes providing supply voltages to a supply voltage switching circuit that controls routing of the supply voltages to power consuming circuitry associated with the supply voltage switching circuit. The method includes comparing the supply voltages, including using at least one relatively lower precision comparator to compare the supply voltages for a relatively large difference between the supply voltages; and using at least one relatively higher precision comparator to compare the supply voltages for a relatively smaller difference between the supply voltages. The method further includes, based on a result of comparing the supply voltages, selectively coupling the supply voltages to at least one of an isolation well and a power supply rail of the supply voltage switching circuit.