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:
Jun. 27, 2017
Filed:
Dec. 15, 2015
Magnachip Semiconductor, Ltd., Cheongju-si, KR;
Zhi Yuan Cui, Cheongju-si, KR;
In Ho Hwang, Incheon, KR;
Gyu Ho Lim, Cheongju-si, KR;
Young Gi Ryu, Seoul, KR;
Jun Sik Min, Cheongju-si, KR;
Magnachip Semiconductor, Ltd., Cheongju-si, KR;
Abstract
A power factor correction controlling circuit includes a control signal providing circuit configured to provide a control signal associated with a feedback signal, the feedback signal being controlled based on a bias signal, a pulse width modulation signal controlling circuit configured to control a pulse width modulation signal based on one of first and second bias signals and a power factor controlling circuit configured to provide a power factor control signal when an amplitude of the pulse width modulation signal reaches that of the power factor control signal. Such a circuit Is able to operate stably, regardless of a load condition and an input voltage condition.