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:
Dec. 31, 2024
Filed:
Oct. 26, 2022
Magnachip Mixed-signal, Ltd., Cheongju-si, KR;
Zhiyuan Cui, Cheongju-si, KR;
Jonghyun Kim, Suwon-si, KR;
Byungki Kim, Seongnam-si, KR;
Tianzhao Gao, Cheongju-si, KR;
Chunyan Zhang, Cheongju-si, KR;
Quan Liu, Cheongju-si, KR;
Magnachip Mixed-Signal, Ltd., Cheongju-si, KR;
Abstract
A power factor correction circuit includes an inductor configured to receive an input voltage and supply an output voltage; a power switch connected to the inductor and configured to control an input current flowing through the inductor; and a switch controller configured to receive a feedback voltage including information on the output voltage and an auxiliary voltage including information on a voltage of the inductor and control an on/off operation of the power switch. The switch controller is further configured to operate in a first mode when the feedback voltage is less than a reference voltage, and operate in a second mode when the feedback voltage is greater than the reference voltage.