DC semiconductor switch

Details DC semiconductor switch DC semiconductor switch

1996-11-08

1998-06-30

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327313, 327403, 327502, H03B 100

Patent

active

057740003

ABSTRACT:
A semiconductor switch including a plurality of die assembled hybrid circuit packages. Each package includes a relatively large number of parallely connected semiconductor switch devices, more particularly metal oxide semiconductor field effect transistors (MOSFETs). An active snubber circuit is connected to the MOSFETs in order to remove the requirement for current sharing during circuit interruption where the MOSFETs turn-off. Each MOSFET package furthermore includes metallic arc barriers between MOSFETs to prevent an arc from propagating from one failed MOSFET to neighboring MOSFETs. Also all of the MOSFETs are turned on momentarily to extinguish arcs whenever the semiconductor switch is in an open or non-conducting condition and a current flow is detected. Clamping of the gate electrode drive bus of the MOSFETs is additionally provided to ensure fusing of gate bonding wires coupling the gate electrodes of the respective MOSFETs to the gate drive bus.

REFERENCES:
patent: 4890020 (1989-12-01), Bird

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