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:
May. 13, 2025
Filed:
Nov. 22, 2022
Applicant:
Alpha and Omega Semiconductor International Lp, Toronto, CA;
Inventor:
Gilbert S. Z. Lee, Seongnam-si, KR;
Assignee:
ALPHA AND OMEGA SEMICONDUCTOR INTERNATIONAL LP, Toronto, CA;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/158 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 1/0009 (2021.05); H02M 3/158 (2013.01);
Abstract
A device, system, and method for inductor current sensing in a Switch Mode Power Supply (SMPS) are described. An input node signal indicating a voltage level at a switch node is sampled at a first time point and a second time point. An artificial ramp signal is generated and adjusted based on the first sampled node voltage and the second sampled node voltage to generate an output ramp signal having a triangular wave form with a rising slope proportional to the rising slope of the inductor current and a falling slope proportional to the falling slope of the inductor current.