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:
Feb. 07, 2023
Filed:
May. 02, 2022
Alpha and Omega Semiconductor International Lp, Toronto, CA;
Prabal Upadhyaya, San Jose, CA (US);
Alpha and Omega Semiconductor International LP, Toronto, CA;
Abstract
A power stage in a multi-phase switching power supply incorporates a current sense circuit coupled to the output voltage disconnect transistor to conduct a portion of an inductor current flowing in the output inductor of the power stage. The current sense circuit is controlled by the same control signal controlling the output voltage disconnect transistor. The portion of the inductor current being conducted by the current sense circuit includes an upslope current and a downslope current of the inductor current. A phase redundant controller generates a sense current signal indicative of the portion of the inductor current conducted by the current sense circuit. Accurate current sensing is implemented for the power stage where the current sense value dose not require temperature compensation.