onsemi Develops Smart Si/GaN Hybrid Power Modules for Enhanced EV Charger Efficiency
onsemi has introduced a new line of smart power modules, integrating both Silicon (Si) and Gallium Nitride (GaN) technologies, specifically engineered for electric vehicle (EV) charging infrastructure. These modules aim to significantly enhance power density and efficiency while reducing overall system complexity.
onsemi, a leading supplier of power semiconductors, has unveiled a new generation of smart power modules designed to address the evolving demands of electric vehicle (EV) charging applications. These innovative modules leverage a hybrid approach, combining the robust power handling capabilities of traditional Silicon (Si) IGBTs or MOSFETs with the high-speed switching advantages of Gallium Nitride (GaN) HEMTs strategically placed in critical converter stages. This integration aims to deliver a superior balance of efficiency, thermal performance, and cost-effectiveness for next-generation EV charging stations, ranging from residential to ultrafast public chargers.
The key technological advancement lies in the optimization of the power stage through intelligent integration. By utilizing GaN for high-frequency switching and Si for lower-frequency, high-current paths, the modules achieve significantly reduced switching losses and improved overall system efficiency. This hybrid architecture also allows for a more compact design by enabling higher power densities, which is crucial for space-constrained charging infrastructure. Procurement engineers should note the potential for reduced bill of materials (BOM) and simplified thermal management in their designs, translating into lower total cost of ownership for charger manufacturers.
Furthermore, these smart modules incorporate advanced control and protection features directly on-die, eliminating the need for numerous external components. This integrated intelligence includes real-time diagnostics, over-current protection, over-temperature protection, and self-healing algorithms, enhancing system reliability and shortening development cycles for charger developers. The emphasis on ruggedness and reliability is critical, given the harsh operating environments often encountered by EV charging equipment.
onsemi's strategic move into these hybrid Si/GaN power modules positions them to capitalize on the rapidly expanding EV charging market. This technology facilitates faster charging times, improved energy efficiency, and a smaller footprint for charging stations, directly benefiting end-users and infrastructure providers. Procurement professionals evaluating future-proof components for EV charging projects are advised to assess these integrated solutions for their potential to optimize performance and streamline manufacturing processes.