A Novel Double-sided Cooling 3L-ANPC SiC MOSFET Power Module with Interleaved Layout

For 1500V voltage applications up to hundreds of kilowatts of power, integrated power modules adopting various 3-level circuits are widely used. This paper proposes a novel double-sided cooling three level active neutral point clamped (3L-ANPC) SiC MOSFET power module with interleaved layout. Benefiting from double-sided cooling technology, the commutation loop inductance and the junction to case thermal resistance (R <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th-jc</inf> ) of the proposed power module are both lowered on the basis of an industrial single-sided cooling counterpart. Moreover, the interleaved layout enables lower temperature rise caused by adjacent chips. As an important factor of design, the tradeoff of commutation loop inductance and thermal coupling between dies is discussed in this paper. Results from simulations and experiments on an experimental prototype are provided for performance evaluation.