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AI Server Power Supply Undergoes Major Transformation, ADI Bets Big with a $1.5 Billion Investment

**Title: AI Server Power Supply Undergoes Major Shift as ADI Makes $1.5 Billion Bet** **Summary:** Analog Devices Inc. (ADI) has announced a definitive agreement to acquire Empower Semiconductor in an all-cash transaction valued at approximately $1.5 billion. This move highlights the critical and growing importance of advanced power delivery technologies in the era of data-intensive AI computing. The acquisition targets Empower's key technologies that address fundamental power challenges in high-performance AI data centers: **Integrated Voltage Regulators (IVR)**, which integrate dozens of discrete components into a single IC for high density and nanosecond transient response; **ECAP Silicon Capacitors (SiCaps)**, offering ultra-low ESL/ESR for high-frequency filtering; **Vertical Power Delivery (VPD)** architecture, which reduces transmission distance and losses; and the overarching **FinFast** technology platform. ADI's strategy aims to fill the "last millimeter" gap in power delivery from the board level to directly beneath the processor die. The deal follows ADI's recent product launches and strategy focused on AI data center power, including µModule solutions, SiC switches, and 800V high-voltage DC systems. The article details the industry-wide trend towards higher integration and VPD to manage soaring GPU/accelerator power demands, now reaching kilowatt levels per card. It examines the three evolutionary stages of AI power: traditional lateral power delivery, VPD, and ultimately substrate-integrated voltage regulators (SIVR). Competitors like Infineon, MPS, Vicor, and TDK are also advancing VPD solutions, while companies like Murata, Samsung Electro-Mechanics, and Rohm are leading in silicon capacitor development. In conclusion, as AI server power consumption escalates dramatically, technologies like IVR, SiCaps, and VPD are becoming essential for efficient power delivery within constrained spaces. ADI's significant investment signals an urgent industry need for innovation in this domain.

marsbit05/22 00:38