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. 15, 2026
Filed:
Apr. 09, 2024
Champion Microelectronic Corporation, Hsinchu, TW;
Jeffrey Hwang, Saratoga, CA (US);
Abstract
A power factor correction controller for a switching power supply is disclosed. The controller is configured to generate a switch control signal for modulating an input current to form an output voltage across an energy storage element. A gain modulator is configured to combine an output voltage error signal with an instantaneous input voltage sensing signal. A current source is configured to draw a current signal from an output node of the gain modulator, wherein the current signal is representative of an instantaneous input current sensing signal. Thereby a voltage at the output node is representative of the instantaneous input voltage sensing signal, the instantaneous input current sensing signal and the output voltage error signal. A comparator is configured to compare the voltage at the output node to a ramp signal to form a switch modulation signal that controls timing of the switch control signal.