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:
Sep. 17, 2024
Filed:
Sep. 30, 2022
Richtek Technology Corporation, Zhubei, TW;
Wei-Hsu Chang, Hsinchu, TW;
RICHTEK TECHNOLOGY CORPORATION, Zhubei, TW;
Abstract
A power factor correction converter includes a rectifier, a power factor correction controller, a power stage circuit, and a feedback circuit, wherein the power factor correction converter converts an AC voltage into an output voltage. The power factor correction controller includes an analog-to-digital converter, a digital peak-hold circuit, a reference voltage generator, an error amplifier, and a pulse-width modulation circuit, wherein the power factor correction controller generates a driving signal according to a rectification signal and a feedback signal. The digital peak-hold circuit includes a delay circuit, a digital rising detector, a tracking register, a digital falling detector, and a holding register, wherein the digital peak-hold circuit generates a peak signal according to a digital input signal.