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:
Oct. 07, 2008
Filed:
Apr. 04, 2007
Yao Yi Liu, Hsinchu, TW;
Yen-an Chang, Hsinchu, TW;
Yao Yi Liu, Hsinchu, TW;
Yen-An Chang, Hsinchu, TW;
Etron Technology Inc., Hsinchu, TW;
Abstract
The present invention relates to a gate driving circuit, comprising a driver control circuit, a voltage following bias circuit, a pull up circuit and a MOS transistor. The driver control circuit receives an active signal and generates a pull up signal or a pull down signal. In case of the pull up signal, the MOS transistor is turned to the OFF state by the pull up circuit, and there is no current for the output load device. In case of the pull down signal, the MOS transistor is turned to the ON state by the voltage following bias circuit. The driving voltage for the gate of the MOS transistor has a constant voltage drop according to the external supply voltage. Therefore, the gate driving circuit of the present invention provides a constant current for the output load device.