Gate driving circuit

Details Gate driving circuit Gate driving circuit

2007-04-04

2008-10-07

Richards, N. Drew (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S112000, C327S331000, C326S082000

Reexamination Certificate

active

07432747

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.

REFERENCES:
patent: 4410815 (1983-10-01), Ransom et al.
patent: 4999586 (1991-03-01), Meyer et al.

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