1200V SiC MOSFET for High Power AI Designs

Alpha and Omega Semiconductor (AOS) has introduced a new 1200V silicon carbide (SiC) MOSFET series tailored for datacentre power supplies and electric vehicle on-board chargers. The third generation αSiC technology boasts a remarkable 30 percent enhancement in switching figure-of-merit (FOM) compared to its predecessor, all while keeping conduction losses low under high load conditions. These Gen3 MOSFETs come fully AEC-Q101 qualified, offering extended lifespan and HV-H3TRB capabilities, along with broad compatibility of gate drive voltages ranging from +15V to +18V.

With the escalating power requirements in electric vehicles (EVs), AI data centers, and renewable energy systems, any inefficiencies in power conversion stages can place significant strain on electrical supply and cooling systems. The target applications for this new MOSFET series include industrial motor drives, solar inverters, high-power SMPS, and eV charging equipment.

As we look towards the future, AI data centers transitioning to high-voltage 800V or ±400V architectures stand to benefit from reduced losses and increased power density to meet the ever-growing power demands. AOS’ Gen3 1200V devices are poised to play a crucial role in enabling these new topologies to support the higher system voltages.

The AOS Gen3 1200V MOSFETs are offered with an on-resistance range from 15mOhm for the AOM015V120X3Q to 40mOhm for the AOM040V120X3Q in a TO27-4L package. AOS has plans to introduce its Gen3 MOSFETs in additional surface mount and topside cooled packages, as well as in case modules.

For electric vehicle designs, the Q series MOSFETs empower engineers to develop systems with higher power density and improved efficiency, ultimately reducing battery consumption and extending vehicle range. AOS has successfully qualified a Gen3 1200V/11mOhm MOSFET die specifically designed for high-power EV traction inverter modules, which is now available for wafer sales.

David Sheridan, Vice President of Wide Bandgap products at AOS, expressed, “Electric vehicles and AI are revolutionizing industries, but they necessitate advanced power systems that can uphold efficiency even amidst escalating energy demands. We are thrilled that this next generation of AOS aSiC MOSFETs can deliver the performance our customers need while also making a positive environmental impact.”