A Novel Lateral Reverse Conducting Trench IGBT on SOI employing NPN bipolar with small area penalty and switching energy loss

Abstract

We propose a novel design of N-channel Reverse Conducting lateral IGBT (RC-LIGBT) based on silicon-on-insulator (SOI) technology with replacing an N+ anode by an NPN bipolar in the embedded diode region. The snap-back effect can be suppressed drastically by the proposed structure with simple fabrication process using one additional masking step of ion implantation as verified by the process and the device simulation. The use of trench structure and injection control drastically improves the trade of relationship between the turn-off energy loss and the structure shows the dynamic and the static forward blocking voltage of nearly 400V. The proposed structure has stronger thermal stability and can reduce the area penalty compared with the other structures ever reported.