A soft-recovery, high speed power rectifier

The authors describe a high-speed, soft-recovery power rectifier that is aimed at high-frequency switching applications. The device integrates a p-i-n region in parallel with a Schottky region to provide soft and fast recovery characteristics. Two-dimensional computer simulations were performed to analyze this device for a blocking voltage of 820 V. An optimal design has been identified, i.e. a 17 mu m unit cell with a p-well spacing of 4 mu m. The modeling results showed that in the lifetime range studied (0.03 mu s>