Abb Schweiz Ag

Abb Power Grids Switzerland Ag

Tobias Wikström

Hermann Amstutz

Bjoern Oedegard

Remo Baumann

Thomas Setz

Sascha Populoh

Hendrik Ravener

Norbert Meier

A bypass thyristor device includes a semiconductor device providing a thyristor with a cathode electrode on a cathode side, a gate electrode on the cathode side surrounded by the cathode electrode and an anode electrode on an anode side; an electrically conducting cover element arranged on the cathode side and in electrical contact with the cathode electrode on a contact side; and a gate contact element electrically connected to the gate electrode and arranged in a gate contact opening in the contact side of the cover element; wherein the cover element has a gas expansion volume in the contact side facing the cathode side, which gas expansion volume is interconnected with the gate contact opening for gas exchange.

Bypass thyristor device with gas expansion cavity within a contact plate

The present application relates to a turn-off power semiconductor device having a wafer with an active region and a termination region surrounding the active region, a rubber ring as an edge passivation for the wafer and a gate ring placed on a ring-shaped gate contact on the termination region for contacting the gate electrodes of a thyristor cell formed in the active region of the wafer. In the turn-off power semiconductor device, the outer circumferential surface of the gate ring is in contact with the rubber ring to define the inner border of the rubber ring. The area consumed by the ring-shaped gate contact on the termination or edge region can be minimized. The upper surface of the gate ring and the upper surface of the rubber ring form a continuous surface extending in a plane parallel to the first main side of the wafer.

Turn-off power semiconductor device with improved centering and fixing of a gate ring, and method for manufacturing the same

An exemplary current switching device includes an integrated gate-commutated thyristor with an anode, a cathode, and a gate, wherein a current between the anode and the cathode is interruptible by applying a switch-off voltage to the gate; and a gate unit for generating the switch-off voltage. The gate unit and a connection of the gate unit to the gate establish a gate circuit having a stray impedance. The gate unit is adapted for generating a spiked switch-off voltage with a maximum above a breakdown voltage (VGR) between the cathode and the gate, such that the switch-off voltage at the gate stays below the breakdown voltage (VGR) due to the stray impedance of the gate circuit.

Current switching device with IGCT

A high-power semiconductor module is disclosed, which can include a high-power semiconductor device mounted on the module and at least two electrical connections. The module can include a short-circuit device mounted on the module. The short-circuit device can generate a persistent electrically conducting path between the two electrical connections upon receiving a trigger signal by electrically destroying a semiconductor of the high-power semiconductor module.

Growing community of inventors

Egliswil, Switzerland

Tobias Wikström