Asea Brown Boveri Ag

Asea Brown Boveri Inc.

Ferdinand Steinruck

Horst Gruning

Raymond Zehringer

Kurt Faller

Toni Frey

Herve De Lambilly

Helmut Keser

A power semiconductor module is specified in which at least one semiconductor chip, which is fitted on a baseplate, is made contact with by a respective contact plunger. The position of the contact plungers can be set individually in a manner corresponding to a distance between the semiconductor chips and a main connection which accommodates the contact plungers. The contact plungers are either subjected to pressure by means of a spring or fixed by means of a solder layer.

Power semiconductor module

A power semiconductor circuit comprises a gate-turn-off semiconductor component (FCTh1, FCTh2) having an anode, a cathode and a gate, a diode (D1, D2) and a drive circuit which is connected to the gate by a large-area, low-inductance stripline (11) and which generates a current pulse for turning off the semiconductor component. The diode (D1, D2) is arranged in series with the semiconductor component (FCTh1, FCTh2), specifically in such a way that the diode (D1, D2) and semiconductor component (FCTh1, FCTh2) form a quarter-bridge arm. Provided in parallel with the series circuit of the semiconductor component (FCTh1, FCTh2) and diode (D1, D2) is a low-inductance blocking capacitor (C1, C2) for absorbing the reverse recovery voltage peaks of the diode (D1, D2). The diode (D1, D2) and blocking capacitor (C1, C2) are arranged with low inductance and spatially immediately adjacent to the semiconductor component.

Power semiconductor circuit

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Mosen, Switzerland

Ferdinand Steinruck