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To meet growing global energy needs, especially from AI-driven data centers and heavy manufacturing, NREL has developed a breakthrough power electronics solution: the Ultra-Low Inductance Smart power module, or ULIS.
Built around silicon carbide (SiC) technology, ULIS delivers unprecedented efficiency, energy density, and cost-effective manufacturability. This compact, 1200-volt, 400-amp module achieves up to five times greater energy density than previous designs, while dramatically reducing parasitic inductance — a key limiting factor in power conversion. With switching performance up to nine times better than current SiC modules, ULIS enables more efficient electricity use in data centers, power grids, microreactors, aircraft, and military vehicles.
Unlike conventional “brick” power modules, ULIS uses a flat, octagonal layout that optimizes space and minimizes electrical losses. This 2D architecture reduces cost and simplifies manufacturing, with total production costs in the hundreds — not thousands — of dollars. The use of flexible polymer materials like Temprion, instead of rigid ceramic bases, contributes to its lightweight, scalable design.
ULIS is also designed for self-monitoring and predictive maintenance, a key advantage for high-risk environments like aviation or defense. Its wireless, modular interface allows easy integration into diverse platforms — from data center racks to advanced eVTOL aircraft. And while it’s currently powered by SiC semiconductors, the platform can be adapted for future materials like GaN and Ga₂O₃.
NREL sees ULIS as a next-generation solution for modernizing the grid, enabling high-performance electric aviation, and supporting emerging fusion power systems. The technology is now available for licensing.
Original – NREL
