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:
Nov. 04, 2025
Filed:
Mar. 30, 2023
Diodes Incorporated, Plano, TX (US);
Haoming Chen, Taipei, TW;
Yi-Chun Wang, San Jose, CA (US);
Koyen Lee, Taipei, TW;
Feng-Jung Huang, Taoyuan, TW;
DIODES INCORPORATED, Plano, TX (US);
Abstract
A power factor correction (PFC) converter comprises an inductor, a main switch, a voltage divider, a diode, and a controller. The main switch controls the inductor performing magnetization and demagnetization, wherein a voltage difference between two ends of the main switch is a switch voltage. The voltage divider divides the switch voltage and generates a division voltage. The controller performs the following operations periodically in general mode: turning on the main switch; turning off the main switch after the main switch is turned on for a period of time; obtaining the switch voltage according to the division voltage, and determining the period of time for which the main switch is turned on next time according to the switch voltage and a predetermined output voltage of the PFC converter; and obtaining an output voltage according to the switch voltage during a period of time after the main switch is turned off.