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:
Dec. 31, 2024
Filed:
Apr. 28, 2023
Chengdu Monolithic Power Systems Co., Ltd., Chengdu, CN;
Zhenya Zhang, Hangzhou, CN;
Lei Du, Hangzhou, CN;
Rui Wang, Chengdu, CN;
Shanglin Xu, Chengdu, CN;
Yueying Du, Chengdu, CN;
Chengdu Monolithic Power Systems Co., Ltd., Sichuan, CN;
Abstract
A charge pump comprises two bridge arms coupled in parallel, two capacitors, and a control circuit. Each bridge arm has two pairs of switches coupled in series, each pair of switches having two switches coupled in series through a common node. Each capacitor is connected between the two common nodes of the corresponding bridge arm. The control circuit provides a mode signal by comparing an output voltage of the charge pump with two threshold voltages via a hysteretic comparison, and provides two control signals with opposite logic states based on the mode signal to control each pair of the switches to work complementarily, wherein the logic states of the control signals flip in response to transiting from a first status to a second status of the mode signal, and maintain in response to transiting from the second status to the first status of the mode signal.