Vishay has introduced IGBT power modules specifically for TIG welding machines. The devices can work up to 1kHz, 600V and 100-400A. There are three half-bridges and on single IGBT, and losses are down on its previous offerings through using ‘Trench PT’ construction: collector-emitter voltages are 1.1-1.3V and turn-off switching energy is 11-45mJ – said to ...
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