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:
Feb. 03, 2015
Filed:
Nov. 23, 2010
Da Song Lin, Shenzhen, CN;
NI Zeng, Shenzhen, CN;
Gang Zha, Shenzhen, CN;
Xianfeng Xiong, Shenzhen, CN;
Yiwei Zhang, Shanghai, CN;
Da Song Lin, Shenzhen, CN;
Ni Zeng, Shenzhen, CN;
Gang Zha, Shenzhen, CN;
Xianfeng Xiong, Shenzhen, CN;
Yiwei Zhang, Shanghai, CN;
STMicroelectronics (Shenzhen) R&D Co., Ltd., Shenzhen, CN;
Abstract
An embodiment of the invention relates to a power converter formed with an error amplifier and a related method. In an embodiment, a first switch is coupled in series with an error amplifier compensation capacitor. Upon detection of a current level greater than a threshold level, the compensation capacitor is decoupled from the error amplifier by opening the first switch. In an embodiment, a second switch is coupled in parallel with the compensation capacitor, and the current-sensing circuit enables conductivity of the second switch to discharge the compensation capacitor upon detection of the current level greater than the threshold level. The second switch is opened upon detection of the current level less than the threshold level. In an embodiment, the current-sensing circuit controls an output current of the power converter at a current-limit level upon detection of the internal current level greater than the threshold level.