Renesas Unveils Industry’s First 650V GaN Package for AI Data Centers - World Business Outlook

Renesas's 650V GaN package is not a product increment—it is a voltage-class disruption that cracks SiC's cost monopoly above 650V. With NVIDIA's next-gen clusters pushing 800V DC distribution, every step-down conversion in the power chain demands higher switching frequency and lower thermal dissipation. If GaN delivers production-grade reliability at this voltage, PSU makers like Delta and Lite-On must re-architect topologies, shrinking magnetics by 30% or more. Supply-chain fragility is the hidden variable: Renesas does not own GaN epi-wafer capacity. Their moat is packaging and power-management IP inherited from the Intersil acquisition, but epi-wafer concentration means a single supplier disruption halts the entire line. Epi-wafer players in China and Taiwan, China still trail by one to two generations on 650V-plus reliability data, yet price pressure will surface within 18 months. Competitively, Infineon's CoolGaN line will respond within two quarters. STMicroelectronics' industrial push, leveraged on consumer-scale GaN volume, is systematically underpriced by the market. Navitas will reframe its equity narrative around data-center GaN displacing SiC. 12-to-24-month call: GaN captures 35% plus of new AI PSU designs; SiC holds automotive but cedes the 650V data-center tier. Cost-per-amp drops 15 to 20 percent. The ultimate beneficiary is hyperscaler PUE.