Load voltage slew-rate controller

Details Load voltage slew-rate controller Load voltage slew-rate controller

1998-01-27

2000-10-24

Nuton, My-Trang

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Slope control of leading or trailing edge of rectangular or...

327110, H03K 512

Patent

active

06137329&

ABSTRACT:
A controller for controlling the voltage slew-rate of an inductive load connected to the drain of a field effect transistor is disclosed. The controller includes a current generator electrically connected between the gate and the drain of the field effect transistor, the current generator providing a current at the gate of the field effect transistor to offset a feed back current at the gate of the transistor due to gate-drain capacitance of the transistor. The current generator includes capacitor means having one end electrically connected to the drain of the field effect transistor, a current multiplier electrically connected between another end of the capacitor means and the gate of the field effect transistor, and a current source electrically connected to the gate of the field effect transistor. The current multiplier includes at least one current mirror, and the current source includes a constant current source.

REFERENCES:
patent: 5157351 (1992-10-01), Carbolante
patent: 5191269 (1993-03-01), Carbolante
patent: 5194760 (1993-03-01), Braun et al.
patent: 5397967 (1995-03-01), Carobolante et al.
patent: 5469094 (1995-11-01), Nessi
patent: 5561391 (1996-10-01), Wellnitz et al.
patent: 5576648 (1996-11-01), Rossi et al.
patent: 5675297 (1997-10-01), Gose et al.
patent: 5694282 (1997-12-01), Yockey

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