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. 30, 2025
Filed:
May. 29, 2023
Richtek Technology Corporation, Zhubei, TW;
Fu-To Lin, Hsinchu, TW;
Chang-Jung Fu, Hsinchu, TW;
RICHTEK TECHNOLOGY CORPORATION, Hsinchu, TW;
Abstract
A switching power converter for converting an input power to an output power includes a power stage; and a conversion control circuit which includes: a current limit control circuit for comparing a current monitor signal and a sensing signal limit threshold to generate a current limit control signal, wherein the current monitor signal is related to an output current of the output power; and a PWM control circuit for generating a PWM signal according to an output voltage of the output power for controlling the power stage to generate the output power. The first state of the PWM signal has a first constant time. When the current limit control signal indicates that the output current exceeds a current limit threshold, the PWM control circuit controls a switching frequency of the PWM signal to operate at a fixed frequency. The fixed frequency is lower than a predetermined frequency limit.