Semiconductor element drive circuit

Details Semiconductor element drive circuit Semiconductor element drive circuit

2011-06-28

2011-06-28

Nguyen, Hai L (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S112000

Reexamination Certificate

active

07969206

ABSTRACT:
A drive circuit for driving a semiconductor element according to an input signal includes an output stage, a clamp circuit, a comparator, and a clamp control circuit. The output stage includes a series circuit of two transistors. A node between the transistors is coupled to a control terminal of the semiconductor element. One of the transistors is turned on when the input signal indicates that the semiconductor element is driven. The clamp circuit clamps a potential of the control terminal to a level enough to drive the semiconductor element when the one of the transistors is turned on. The comparator compares a power supply voltage of the drive circuit with a threshold voltage. The clamp control circuit disables the clamp circuit when the power supply voltage is less than the threshold voltage.

REFERENCES:
patent: 5552746 (1996-09-01), Danstrom
patent: 7453308 (2008-11-01), Tihanyi
patent: 7579880 (2009-08-01), Ueda

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