Driver circuit for slope-controlled pulse switching of a load

Details Driver circuit for slope-controlled pulse switching of a load Driver circuit for slope-controlled pulse switching of a load

1998-01-15

2000-08-08

Zweizig, Jeffrey

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Accelerating switching

327379, 327387, H03K 1704

Patent

active

061007420

ABSTRACT:
A driver circuit for slope-controlled pulsed switching of a load having a MOS switching transistor switching the load and a control loop with an amplifier having an amplifier input coupled with a switch control pulse source, an amplifier output connected with the gate of the MOS switching transistor, and a feedback capacitor. The driver circuit also includes a switchable current mirror circuit with a current mirror transistor formed by the MOS switching transistor and a diode transistor wired as a current mirror diode, a connection point between the diode transistor and the gate of the MOS switching transistor being connected with the amplifier output. A timer circuit is supplied on the input side with the switch control pulses from the switch control pulse source, and switches the diode transistor into a conductive state for essentially the duration of each switch control pulse edge and otherwise into a nonconductive state.

REFERENCES:
patent: 4739198 (1988-04-01), Maruyama
patent: 5469094 (1995-11-01), Nessi

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