Gate drive for lower switching noise emission

Details Gate drive for lower switching noise emission Gate drive for lower switching noise emission

2006-11-15

2009-02-10

Luu, An T (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S110000, C327S111000, C327S381000, C326S082000

Reexamination Certificate

active

07489166

ABSTRACT:
A gate drive circuit for driving the gate of a power transistor switch comprising a gate drive sourcing circuit supplying gate drive current to the power transistor switch, the gate drive sourcing circuit initially providing a first current to the gate of the power transistor switch and then providing a second current to the gate of the power transistor switch; a circuit for driving the gate drive sourcing circuit, the circuit having a first input for driving the gate drive sourcing circuit to turn on the power transistor switch by providing the first current, the circuit further having a second input coupled to a voltage across the power transistor switch and being controlled by the second input to cause the gate drive sourcing circuit to provide the second current when the voltage across the power transistor switch begins to drop as the power transistor switch begins to turn on.

REFERENCES:
patent: 5365118 (1994-11-01), Wilcox
patent: 6150853 (2000-11-01), Chrappan et al.
patent: 6353345 (2002-03-01), Yushan et al.
patent: 7126388 (2006-10-01), Harriman
patent: 2002/0109417 (2002-08-01), Torrisi et al.

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