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. 10, 2024
Filed:
Sep. 12, 2022
Shanghai Bright Power Semiconductor Co., Ltd., Shanghai, CN;
Pengbo Yang, Shanghai, CN;
Xiaoru Gao, Shanghai, CN;
SHANGHAI BRIGHT POWER SEMICONDUCTOR CO., LTD., Shanghai, CN;
Abstract
A controller chip of a flyback converter, a flyback converter and a switched-mode power supply system are disclosed. In the controller chip, a current scaling module is added, which converts a feedback current signal at a feedback pin of the controller chip to allow compensation capacitor with a small capacitance to be integrated into the chip to constitute a required pole compensation module. In this way, a pole required by the feedback pin FB can be successfully provided in the chip. As a result, filtering of high-frequency noise in a feedback path in which the feedback pin FB is located can be achieved, reducing ripple in an output voltage generated by the flyback converter. Moreover, without changing a sampling gain and the compensation pole, it is allowed to greatly reduce the compensation capacitance, for example, to the order of 10 pF.