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:
Nov. 10, 2009
Filed:
Apr. 19, 2006
Chih-feng Huang, Jhubei, TW;
Chiu-chih Chiang, Hsinchu, TW;
You-kuo Wu, Sijhih, TW;
Wei-hsuan Huang, Taoyuan, TW;
Ta-yung Yang, Milpitas, CA (US);
Chih-Feng Huang, Jhubei, TW;
Chiu-Chih Chiang, Hsinchu, TW;
You-Kuo Wu, Sijhih, TW;
Wei-Hsuan Huang, Taoyuan, TW;
Ta-yung Yang, Milpitas, CA (US);
System General Corp., Taipei Hsien, TW;
Abstract
A switching circuit for power converters is presented. It includes a voltage-clipping device, a resistive device, a first transistor and a second transistor. The voltage-clipping device is coupled to an input voltage. The first transistor is connected in series with the voltage-clipping device for switching the input voltage. The second transistor is coupled to control the first transistor and the voltage-clipping device in response to a control signal. The resistive device provides a bias voltage to turn on the voltage-clipping device and the first transistor when the second transistor is turned off. Once the second transistor is turned on, the first transistor is turned off and the voltage-clipping device is negatively biased. The voltage-clipping device is developed to clamp a maximum voltage for the first transistor.