A physically based equation for predicting required p-emitter length of a snapback-free reverse- conducting insulated gate bipolar transistor (RC-IGBT) with field-stop structure is proposed. The n-buffer resis- tanc...A physically based equation for predicting required p-emitter length of a snapback-free reverse- conducting insulated gate bipolar transistor (RC-IGBT) with field-stop structure is proposed. The n-buffer resis- tances above the p-emitter region with anode geometries of linear strip, circular and annular type are calculated, and based on this, the minimum p-emitter lengths of those three geometries are given and verified by simulation. It is found that good agreement was achieved between the numerical calculation and simulation results. Moreover, the calculation results show that the annular case needs the shortest p-emitter length for RC-IGBT to be snapback-free.展开更多
基金Project supported by the Fundamental Research Funds for the Central Universities(No.E022050205)the National Natural Science Foundation of China(No.51237001)
文摘A physically based equation for predicting required p-emitter length of a snapback-free reverse- conducting insulated gate bipolar transistor (RC-IGBT) with field-stop structure is proposed. The n-buffer resis- tances above the p-emitter region with anode geometries of linear strip, circular and annular type are calculated, and based on this, the minimum p-emitter lengths of those three geometries are given and verified by simulation. It is found that good agreement was achieved between the numerical calculation and simulation results. Moreover, the calculation results show that the annular case needs the shortest p-emitter length for RC-IGBT to be snapback-free.