STM’s new GaN semiconductors improve energy efficiency - Evertiq

STMicroelectronics has introduced a new generation of gallium nitride (GaN)-based power semiconductor devices—PowerGaN—to enhance efficiency and power density in high-voltage power supplies. Operating... Read original →

STMicroelectronics’ 700V PowerGaN launch accelerates the obsolescence of silicon in high-efficiency power conversion. Technically, zero reverse-recovery charge enables simpler AI server PSU topologies—critical for NVIDIA’s liquid-cooled GB200 racks—slashing magnetics size and boosting power density. Upstream, 8-inch GaN-on-Si wafer demand will surge, pressuring suppliers like Wolfspeed; downstream, industrial PSU design cycles could shorten by over 30%. Geopolitically, EU subsidies under the Net-Zero Industry Act bolster ST’s onshore supply chain compliance, while Taiwan, China fabs lagging in high-voltage GaN yield risk exclusion from premium power ecosystems. Competitors like Infineon and Wolfspeed, entrenched at 650V, must either escalate voltage platforms or retreat to consumer markets. With data center PUE regulations tightening globally, GaN adoption in 48V bus architectures will explode within 18 months—ST is seizing the energy chokepoint of AI infrastructure.