Delta Electronics Develops Solid-State Transformer, Joins Nvidia Rubin AI Server Power Supply Chain

Nvidia’s next-generation Rubin AI servers use an 800-volt high-voltage direct-current power architecture to accommodate rising power density in data centers. After a decade of development, Delta Electronics has produced a solid-state transformer that converts high-voltage alternating current directly into direct current, reducing losses from multiple conversion stages. The technology also extends Delta’s business beyond traditional IT power supplies into AI data-center infrastructure.

Delta has joined the supply chain for Rubin’s 800-volt high-voltage direct-current power cabinets, with related HVDC solutions expected to begin shipping in the third quarter of 2026. Reports said one solid-state transformer system costs as much as a Porsche but did not disclose an exact amount. Its core value lies in simplifying power architecture and supporting the rapidly growing electricity needs of next-generation AI factories.