Visteon-Shinry and Infineon develop GaN onboard charger - Automotive World

Infineon's GaN onboard charger push with Visteon and Shinry is less a product announcement than a power-semiconductor value-chain realignment. For a decade, ST and ON Semi have dominated automotive power via vertical integration; Infineon's device-plus-system alliance model is a deliberate flanking maneuver against ST's moat. Technically, GaN's switching frequency advantage at 650-900V—three to five times that of SiC—compresses EMI filtering and magnetic component volumes, a structural win for 800V thermal budgets. Yet the substrate layer remains locked to Wolfspeed and Sumitomo Electric, meaning upstream concentration risk persists regardless of system-level partnerships. Competitive read: Navitas and ROHM will likely ship counter-proposals within twelve months. Tesla's in-house route sidesteps the Tier-1 stack entirely. The real inflection sits at the twenty-four-month mark: once GaN device costs breach the 15% threshold below equivalent SiC parts, OEMs will revisit the single-wide-bandgap assumption. Hybrid SiC-GaN topologies may become the default for next-gen 1500V architectures.