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. 24, 2022
Filed:
Mar. 11, 2020
Applicant:
Chicony Power Technology Co., Ltd., New Taipei, TW;
Inventors:
Assignee:
CHICONY POWER TECHNOLOGY CO., LTD., New Taipei, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 1/32 (2007.01); H02M 1/42 (2007.01); H02M 1/08 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 1/4225 (2013.01); H02M 1/08 (2013.01); H02M 1/32 (2013.01); H02M 1/0009 (2021.05);
Abstract
A power supply apparatus includes a rectifier unit, a power factor correction circuit, and a control unit. The control unit correspondingly provides a reference voltage according to an amplitude of an input power source. When a voltage signal corresponding to an inductance current of an inductor of the power factor correction circuit is higher than the reference voltage, the control unit controls an energy release switch of the power factor correction circuit to be repeatedly switched on/off, and when the voltage signal is lower than the reference voltage, the control unit controls the energy release switch to be turned off.