Vishay Intertechnology IGBT power modules for TIG welding machines

Vishay Intertechnology has introduced four half-bridge and single-switch IGBT power modules designed specifically for TIG welding machines. Built on the company’s Trench PT IGBT technology, the VS-GP100TS60SFPbF, VS-GP250SA60S, VS-GP300TD60S and VS-GP400TD60S provide low collector-to-emitter voltages down to 1.10 V and turn-off switching energy down to 11 mJ for output inverter stages.

The modules are said to achieve a smaller size than planar IGBTs, providing designers with higher current density and lower thermal resistance (junction-to-case) without compromising on performance. The devices’ low collector-to-emitter voltage enables low conduction losses, while their turn-off switching energy is 50% lower than previous-generation devices.

The half-bridge VS-GP100TS60SFPbF, VS-GP300TD60S and VS-GP400TD60S combine Trench PT IGBTs with HEXFRED and FRED Pt antiparallel diodes in the INT-A-PAK package and dual INT-A-PAK package with a low profile of 17 mm. The single-switch VS-GP250SA60S features the SOT-227 package, provides low stray inductance of ≤5 nH typical and is UL-approved file E78996.

The RoHS-compliant modules feature operating frequencies to 1 kHz, 600 V collector-to-emitter voltages and continuous collector current from 100 to 400 A. The devices can be directly mounted to heatsinks and offer low EMI to reduce snubbing requirements.