Patent ID: 6707650
Filing Date: 2004-03-16
Classification: H02M,Y02B

Abstract:
A power MOSFET gate protection circuit including a limiter having a low voltage conduction threshold self-controlled by its own wiring and a first portion connected in parallel with a capacitive divider component and connected to the gate of an associated power MOSFET, and a second portion connected directly to the source of said associated power MOSFET,wherein said limiter comprises a transistor which is connected in parallel with said capacitive divider component, which is self-controlled by its gate-source wiring, whose source is connected to said gate of said associated power MOSFET, and whose gate is connected to said source of said associated power MOSFET, and wherein said capacitive divider component and the intrinsic gate-source capacitance of the associated power MOSFET connected in series form a capacitive divider bridge.