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Rohm Launches 1700V SiC Power Module

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Achieves the highest level of reliability in extreme environments

Rohm recently announced the development of a 1700V/250A rated SiC power module that provides the industry's highest level of reliability optimised for outdoor power generation systems, such as inverters for solar power and converters for industrial high-power supplies.

In recent years, due to its energy-saving benefits, SiC is seeing greater adoption in 1200V applications such as electric vehicles and industrial equipment. The trend towards higher power density has resulted in higher system voltages, increasing the demand for 1700V products. However, it has been difficult to achieve reliability, and so IGBTs are typically preferred for 1700V applications.

In response, Rohm was able to reach high reliability at 1700V, while maintaining the energy-saving performance of its popular 1200V products, achieving the first successful commercialisation of 1700V rated SiC power modules. The BSM250D17P2E004 uses new construction methods and coating materials to prevent dielectric breakdown and suppress increases in leakage current. As a result, high reliability is achieved that prevents dielectric breakdown even after 1,000 hours under high temperature high humidity bias testing (HV-H3TRB). This ensures high 1700V withstand voltage even under severe temperature and humidity environments.

By incorporating Rohm's SiC MOSFETs and SiC Schottky barrier diodes into the same module and optimising the internal structure, it has been possible to reduce ON resistance by 10 percent over other SiC products in its class. This translates to improved energy savings in any application.

Going forward, Rohm says it will continue to expand its lineup to ensure worry-free use by customers and work to increase demand by offering evaluation boards that allow easy testing and verification of the SiC modules.


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