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Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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Fast high-voltage, high-current switching using stacked IGBTs

Ghasemi, Z. and MacGregor, S.J. and Dick, A.R. and Tuema, F.A. (2001) Fast high-voltage, high-current switching using stacked IGBTs. In: 2001 IEE Symposium on Pulsed Power, 2001-05-01 - 2001-05-02.

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Abstract

The development of solid-state switches for pulsed power applications has been of considerable interest since high-power semiconductor devices became available. However, the use of solid-state devices in the pulsed power environment has usually been restricted by device limitations in either their voltage/current ratings or their switching speed. The stacking of fast medium-voltage devices, such as IGBTs, to improve the voltage rating, makes solid-state switches a potential substitute for conventional switches such as hard glass tubes, thyratrons and spark gaps.This paper reports on a comparative study into the performance of commercially available 1.2 kV IGBT devices. It has been found that dual degradation of the drainsource voltage can be observed in most of the devices and the reasons for this have been investigated. Further studies have looked at the performance and operation of a high current switch employing fifty 1.2 kV IGBTs in a stacked configuration. Switching times of a few tens of nanoseconds have been measured for a 10 kV charging voltage switched into a 25 R input impedance Blumlein pulse generator.