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:
Aug. 20, 2024
Filed:
Apr. 28, 2022
Chengdu Monolithic Power Systems Co., Ltd., Chengdu, CN;
Yong Zhou, Chengdu, CN;
Chengdu Monolithic Power Systems Co., Ltd., Sichuan, CN;
Abstract
A control circuit used in a switching converter having a switch and an inductor. The control circuit has an error amplifying circuit, a current comparing circuit, a clock generator and a constant OFF time generator. The error amplifying circuit receives a voltage reference signal and a voltage feedback signal indicative of an output voltage signal, and provides an error signal. The current comparing circuit compares the error signal with a current sensing signal indicative of a current flowing through the inductor, and provides a comparing signal to turn the switch OFF. When the switching converter is coupled to a filtering capacitor, the clock generator provides a clock signal to turn the switch ON, and when the switching converter is coupled to a super capacitor, the clock generator is disabled and the constant OFF time generator provides a constant OFF time signal to turn the switch ON.