Isolated driver circuit for high frequency solid-state switches

Details Isolated driver circuit for high frequency solid-state switches Isolated driver circuit for high frequency solid-state switches

1996-03-14

1997-11-11

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Accelerating switching

327403, 327442, H03K 1704

Patent

active

056868545

ABSTRACT:
A driver circuit for high frequency transistor type switches, comprising two sections; a positive (+) drive and a negative (-) drive, both sections being supplied with a high frequency signal by a square wave oscillator source. The sections are connected in parallel to a control generated input drive signal. In the negative drive section, the input drive signal is first inverted before being processed. Each section contains precise circuits for routing a high frequency carrier signal, for increasing input drive signal power gain, for providing independent positive and negative slope control, for providing exceptionally high voltage and noise isolation to avoid transmission of harmful voltages or noise, and for delivering a positive or negative drive signal to the gate/emitter of an external transistor under drive. The invention is characterized by its high voltage and noise isolation, using few components and being small in size.

REFERENCES:
patent: 5530385 (1996-06-01), Miettinen

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