Circuit for driving a voltage-controlled semiconductor switch

Details Circuit for driving a voltage-controlled semiconductor switch Circuit for driving a voltage-controlled semiconductor switch

1993-03-19

1995-04-04

Pellinen, A. D.

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Utilizing three or more electrode solid-state device

327427, H03K 17687, H03K 301

Patent

active

054040590

ABSTRACT:
A dynamic and low-loss circuit for driving a voltage-controlled semiconductor switch includes a transformer having primary and secondary windings. The primary winding is connected to a voltage for driving a voltage-controlled semiconductor switch and the secondary winding has a center tap connected to the emitter or source of the semiconductor switch and secondary winding halves with outer terminals. A bridge rectifier is connected to the secondary winding and has positive and negative direct-voltage terminals. A gate resistor is connected between the gate of the voltage-controlled semiconductor switch and the positive direct-voltage terminal. A series circuit of a first resistor and an auxiliary switch is connected between the direct-voltage terminals. A capacitor is connected between the center tap and the negative direct-voltage terminal. Two diodes have cathodes connected to the outer terminals. A second resistor has one end connected to the center tap and another end connected to the anodes of the two diodes and to the gate of the auxiliary switch.

REFERENCES:
patent: 4970420 (1990-11-01), Billings
"Conference Record of the 1988 18th Power Modulator Symposium" pp. 28-33.
"Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting" Part II, pp. 1049-1055.

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