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. 11, 2018
Filed:
Jan. 29, 2016
Chengdu Monolithic Power Systems Co., Ltd., Chengdu, CN;
Yike Li, Chengdu, CN;
Abstract
A control circuit for a switching power converter is disclosed. The control circuit may comprise an OFF control signal generation module configured to generate an OFF control signal having an inactive logic state and an active logic state. The control circuit is configured to turn OFF a main switch of the switching power converter in response to the active logic state. The OFF control signal generation module can regulate an ON time of the main switch through regulating a change of the OFF control signal from the inactive logic state to the active logic state based on a first capacitor voltage across a first capacitor to maintain a switching frequency of the main switch substantially constant. The first capacitor is charged in a predetermined time since the main switch is turned ON and discharged after the predetermined time.