Improving RBSOA of 10 kV class bipolar devices

Although some effort has been made to develop a 10 kV bipolar device, one of the main challenges to this development is the small RBSOA expected from a 10 kV class device. Based on the good understanding of what exactly determines the RBSOA of a large area bipolar device, in this paper, we stated that a better RBSOA device can be achieved by increase the sustain-mode dynamic avalanche capability of the device. In the punch through case when the device is in sustained mode, an analytical model is also developed based on the concept