Peak turn-on current limiting base drive

Details Peak turn-on current limiting base drive Peak turn-on current limiting base drive

1983-04-04

1985-09-10

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307228, 307263, 307268, 307270, 307555, H03K 460, H03K 512, H03K 604, H03K 1794

Patent

active

045408947

ABSTRACT:
A circuit for limiting the peak turn-on current stress imposed upon power switch transistors in an inverter during the coasting diode cleaning interval includes a ramp step generator providing a ramp of control current to the power transistor until conduction is initiated. The power switch transistor turn-on is sensed, which triggers a step increase in turn-on current to an appropriate final value which is sufficient to quasi-saturate the power switches.

REFERENCES:
patent: 4325021 (1982-04-01), McMackin
patent: 4410810 (1983-10-01), Christen
International Rectifier Hexfet Databook, published by International Rectifier, El Segundo, California, pp. 75 and 76.

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