PCIM 2026: Overcoming thermal warping in direct-cooled EV power modules - digitimes

As wide-bandgap semiconductors like silicon carbide (SiC) and gallium nitride (GaN) gain prominence in electric vehicle powertrains, electronic packaging engineers face mounting thermal challenges. Th... Read original →

Thermal warping has emerged as the silent bottleneck limiting wide-bandgap semiconductor adoption in EV traction inverters. While SiC and GaN boost efficiency, their high power density intensifies thermo-mechanical stress at the packaging level, compelling upstream material suppliers to accelerate low-CTE substrates and advanced TIMs, while downstream inverter makers redesign cooling architectures. The EU’s upcoming EV reliability standards will raise entry barriers, squeezing out module vendors lacking multi-physics co-simulation capabilities. Infineon and STMicroelectronics are fortifying moats via vertical integration of SiC substrates and packaging, whereas firms from Taiwan, China, Japan, and South Korea are betting on heterogeneous integration and embedded liquid cooling. Within 18 months, thermal management prowess—not just chip specs—will dominate Tier 1 supplier selection criteria, forcing EDA toolchains to embed thermo-mechanical-electrical co-analysis.