Developments in Hybrid Si – SiC Power Modules
This paper investigates utilization of silicon carbide (SiC) Schottky power diodes as inverter Free Wheel Diodes (FWD) in a commercially available standard Econopak module also packaged with latest generation low-loss IGBT silicon. Static and switching characteristics of SiC diodes over standard module operating temperature 25 0C to 125 0C (298 0K - 398 0K) are measured. Module Turn-on, Turn-off and conduction losses vs. frequency are calculated and measured for three phase motor drive operation. Measurements are compared to standard modules using all Silicon (Si) IGBT- diode. System benefits justifying the increased SiC diode cost, such as EMI reduction, increased efficiency, reduced magnetic filter volume and reduced cooling requirements at higher allowable switching frequencies is investigated.
Robert P. Devaty, David J. Larkin and Stephen E. Saddow
G. Skibinski et al., "Developments in Hybrid Si – SiC Power Modules", Materials Science Forum, Vols. 527-529, pp. 1141-1147, 2006