MEMS Heralds an Overdue Step Change in Switching Technology

This article highlights the revolutionary advancements brought by MEMS (Micro-Electro-Mechanical Systems) technology in switching applications. Traditional electromechanical and solid-state relays suf... Read original →

The breakthrough in MEMS switching is triggering a structural reset across the power semiconductor stack. While EUV and 3nm processes focus on logic, MEMS demands for high-aspect-ratio structures and advanced packaging will redirect foundry investments toward specialty nodes. Downstream, AI server power delivery can shed the thermal overhead of MOSFETs and SiC JFETs, enabling unprecedented power density. U.S. export controls on advanced packaging tools may delay adoption outside North America, but foundries in Taiwan, China and Hong Kong, China could leapfrog by building MEMS-CMOS heterogeneous integration platforms. Analog leaders like Infineon and TI face a strategic dilemma: sticking with solid-state relays misses an efficiency inflection point, yet pivoting to MEMS requires supply chain overhaul. Within 18 months, GPU/CPU VRMs will become the first mass deployment arena—MEMS’ near-zero on-resistance will directly lower PUE in AI clusters, creating a system-level energy efficiency flywheel.