CSTBT™ based Split-Gate RC-IGBT with Low Loss and EMI Noise

CSTBT™ faces a complex tradeoff among E
on/off
-V
CEsat
-SOA and EMI noise. We propose a split-gate CSTBT™ to break up the complex tradeoff and introduce this novel structure to the RC-IGBT for the first time. The Miller capacitance was drastically reduced by using the proposed structure while maintaining the Blocking Voltage, which contributes to approximately a 15% reduction in total loss without any sacrifices of EMI noise and/or SOA.