#Japan #electric vehicles #ROHM #Kyoto #SiC Modules

ROHM Unveils New SiC Power Modules

ROHM Co., Ltd. has made a significant advancement in the realm of power electronics with the introduction of its new SiC (Silicon Carbide) molded modules, specifically designed for onboard charger (OBC) applications in electric vehicles (EVs). These innovative modules, available in 4-in-1 and 6-in-1 configurations packaged in the HSDIP20, are tailored for power-factor-correction (PFC) circuits and LLC-resonant converters.

Features and Benefits of the New Modules

The latest lineup consists of six models rated at 750V and seven at 1200V, optimizing space by integrating essential power conversion circuits into a compact module. This not only reduces the design workload for engineers but also facilitates the miniaturization of onboard chargers. The growing demand for electric vehicles has necessitated a shift towards higher battery voltages, enhancing driving range and charging speed. As a result, the need for more efficient and densely packed power modules has never been greater.

ROHM's HSDIP20 module effectively addresses these requirements. With an insulating substrate that provides excellent heat dissipation, this new module maintains a lower chip temperature even under high power conditions. For instance, in typical PFC circuits, a comparative test between a discrete configuration with six devices and a single HSDIP20 6-in-1 module demonstrated a remarkable difference of approximately 38 degrees Celsius in temperature during 25W operation—highlighting the advanced thermal management capabilities of ROHM's new design.

The HSDIP20 boasts a threefold increase in power density compared to traditional top-side cooled discrete configurations and offers 1.4 times the power density of similar DIP modules. Additionally, it reduces the mounting area by about 52%, pushing the boundaries of compact design in electric powertrains.

Supporting the Transition to Electric Vehicles

As the automotive industry continues its shift towards electrification, ROHM is committed to delivering solutions that marry compactness with high efficiency. The company's future developments will include automotive SiC integrated power modules (IPMs) designed to enhance reliability while maintaining a small footprint.

To support the rapid adoption of the HSDIP20 modules, ROHM provides comprehensive application-level assistance, including in-house motor testing facilities and robust thermal design data. The company also offers two evaluation kits to facilitate practical testing; one designed for double-pulse testing and another for three-phase full-bridge configurations to simulate real-world performance scenarios.

Conclusion

In conclusion, ROHM's latest high-density SiC power modules are setting new standards for performance in the electric vehicle sector. As demand for efficient and compact power conversion systems escalates, the HSDIP20 module not only meets current challenges but also paves the way for future innovations in electric vehicle technology. For more information, visit ROHM's official website or check out their announcement for full specifications and application support details.