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:
Jul. 06, 2021
Filed:
Dec. 12, 2019
Wuxi Chipown Microelectronics Co., Ltd., Wuxi, CN;
Changshen Zhao, Wuxi, CN;
Haisong Li, Wuxi, CN;
Wenliang Liu, Wuxi, CN;
Hao Qin, Wuxi, CN;
Yangbo Yi, Wuxi, CN;
Kuang Wang, Wuxi, CN;
Wuxi Chipown Microelectronics Co., Ltd., Jiangsu, CN;
Abstract
A highly integrated switching power supply and a control circuit are provided. The switching power supply includes a transformer, the transformer comprises a primary winding, a secondary winding and an auxiliary winding, and the control circuit includes: a power switch transistor, configured to control disconnection and conduction of the primary winding of the transformer; a primary current sampling module, configured to sample a current of the primary winding to generate a sampling voltage; and a voltage stabilization control module, configured to turn on or turn off the power switch transistor according to an input voltage, an output voltage of the switching power supply system, and the sampling voltage.