As the artificial intelligence revolution accelerates, power semiconductors—critical components for managing high-voltage electricity in data centers—are experiencing unprecedented demand. Industry analysts report a surge in orders from major tech giants building expansive AI infrastructure, propelling the global market toward a projected $80 billion valuation by 2030. Korean firms, long dominant in memory chips, are now pivoting aggressively into this niche, capitalizing on the AI boom to diversify beyond volatile consumer electronics.
Power semiconductors, including silicon carbide (SiC) and gallium nitride (GaN) devices, enable efficient power conversion and switching, essential for the energy-hungry servers powering large language models like those from OpenAI and Google. With AI training clusters consuming megawatts comparable to small cities, these chips reduce energy waste by up to 30%, addressing both cost pressures and sustainability mandates. Samsung Electronics, for instance, has ramped up production of its SiC MOSFETs at facilities in Giheung, South Korea, supplying Nvidia's latest Blackwell GPU platforms.
South Korean companies are seizing a prime opportunity amid U.S.-China trade tensions that have disrupted traditional supply chains. SK Siltron, a key player in silicon wafers, announced a $2.5 billion investment last month to expand SiC substrate manufacturing, aiming for 40% market share by 2028. Meanwhile, Samsung and LG Innotek are collaborating on next-generation GaN power modules, targeting hyperscalers like Amazon Web Services and Microsoft Azure. Executives at the Korea Semiconductor Industry Association hailed the shift as a "strategic renaissance," with exports of power semis jumping 45% year-over-year in 2025.
The momentum extends globally, with Infineon Technologies and Wolfspeed leading in the West, but Asian manufacturers are closing the gap through rapid innovation. Market research from TrendForce indicates AI-driven demand will account for 25% of power semiconductor growth through 2027, outpacing electric vehicles. Yet, challenges loom: raw material shortages for SiC and intense R&D competition could strain supplies, prompting Korea's government to allocate 1.2 trillion won ($900 million) in subsidies for domestic production.
Analysts view this traction as a boon for Korea's economy, potentially offsetting slowdowns in DRAM and NAND amid softening smartphone sales. As AI evolves from hype to infrastructure, power semiconductors stand as the unsung heroes ensuring scalability. Industry leaders warn that without continued investment, the sector risks ceding ground to emerging players in Taiwan and Japan, underscoring the high-stakes race to electrify the AI era.
