New SiC power module achieves high level of reliability in extreme environments

ROHM has developed a 1700V/250A rated SiC power module that gives what is claimed to be the industry’s highest level of reliability optimised for inverter and converter applications including outdoor power generation systems and industrial high power supplies. The BSM250D17P2E004 uses new construction methods and coating materials to stop dielectric breakdown and suppress increases in leakage current. Consequently, high reliability is attained that stops dielectric breakdown even after 1,000 hours under high-temperature high humidity bias testing. This assures high voltage (1700V) operation even under severe temperature and humidity environments. By incorporating the company's SiC MOSFETs and SiC Schottky barrier diodes into the same module and optimising the internal structure it is claimed to make it possible to decrease ON resistance by 10% over other SiC products in its class. This offers improved energy savings and reduced heat dissipation in any application.