SONIC -A New Generation of Fast Recovery Diodes

摘要

In this paper, new families of planar SONIC soft recovery diodes in the 600V to 1800V voltage range with different current ratings are introduced. The fast and soft recovery diodes with tail current were developed using a combination of deep diffused phosphorous wafers from the backside of a wafer and controlled axial lifetime killers. The proposed diodes give stable performance throughout its operating temperature range and maintain negligible forward voltage drop with respect to temperature. The SONIC diodes are designed for high frequency applications where rugged switching performance is required. The switching losses at 25°C to 125°C are compared between SONIC and standard Fast Recovery Epitaxial Diode (FRED) using platinum or gold as lifetime killers.