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AN-2201: Parallel Connection of SCALE-2 and SCALE-iFlex Gate Drivers

In order to overcome limited current ratings and achieve higher power capacity, IGBT power modules are increasingly connected in parallel. Ensuring collector current sharing and symmetric collector-emitter voltages between paralleled IGBTs are key challenges for the gate drivers.

This application note explains the paralleling concept for SCALE-2 and SCALE-iFlex / SCALE-iFlex LT gate drivers. The document also provides basic guidelines on hardware optimization for the paralleled IGBT modules themselves as the mechanical set-up also has a major impact on current distribution between parallel-connected IGBT modules.

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