Infineon Technologies will develop a new, low-cost integrated circuit (IC) gate driver specifically for use with gallium nitride (GaN) high electron mobility transistor (HEMT) switches. The GaN HEMT switches would be used as a component for controlling variable speed electric motors in variable speed drives (VSDs). Electric motors, which account for about 40% of U.S. electricity consumption, can be made substantially more efficient by replacing constant speed motors with variable speed motors. Most VSDs today use silicon-based semiconductors, which are limited in performance compared to those based on wide-bandgap semiconductors like GaN. Infineon plans to integrate a cost-effective gate driver IC together with GaN HEMT switches and simple packaging to enable a cost reduction by a factor of two or three, simplified integration, and significant energy savings. If successful, the technology may drive rapid adoption of variable speed control in residential and light commercial 50-200W appliance motors from fans and pumps to refrigeration and air conditioning compressors.
If successful, CIRCUITS projects will enable further development of a new class of power converters suitable for a broad range of applications including motor drives for heavy equipment and consumer appliances, electric vehicle battery charging, high-performance computer data centers, grid applications for stability and resilience, and emerging electric propulsion systems.
More robust power electronics that withstand higher operating temperatures, have increased durability, a smaller form factor, and higher efficiency will significantly improve the reliability and security of a resilient electrical grid.
Low cost and highly efficient power electronics could lead to more affordable electric and hybrid-electric transportation, greater integration of renewable power sources, and higher efficiency electric motors for use in heavy industries and consumer applications.
Electricity is the fastest growing form of end-use energy in the United States. High performance, low cost power electronics would enable significant efficiency gains across the economy, reducing energy costs for businesses and families.