$VICR $AOSL $VSH $POWI Global Power Semiconductors: AI Infrastructure Creates a New Profit Pool, but the Industry Remains Bifurcated Between Mature Silicon, SiC Digestion, and Grid-to-Core Winners
https://t.co/265B1T9nIz
Bottom Line: The global power semiconductor industry should be underwritten as 2 overlapping markets rather than 1. The narrow discrete and module layer is a roughly $32.8bn market, while the broader investable power stack, including PMICs, drivers, controllers, battery-management ICs, smart power stages, protection, and wide-bandgap devices, is closer to $57bn in 2025 and still only mid-single-digit growth at the aggregate level. The real strategic split is therefore not growth versus no growth, but where mix is moving. Broad silicon power remains mature and manufacturing-intensive, automotive and industrial remain the economic center of gravity, and upstream SiC is in cyclical digestion after a 2019-2024 capacity build. At the same time, AI infrastructure is creating a localized demand shock in low-voltage, high-current, high-frequency power delivery, higher-voltage front-end conversion, specialty BCD, GaN, smart power stages, advanced packaging, and grid-facing electrical infrastructure. The most durable winners are likely to be companies that combine multiple material systems, content across multiple stages of the grid-to-core chain, specialty manufacturing and packaging leverage, and architecture-level customer intimacy. The most important analytical mistake is to treat broad SiC oversupply as broad power-semiconductor weakness. The sharper conclusion is that the sector is becoming a strategic infrastructure layer for electrification and AI, but profits are being redistributed unevenly toward solution-complete vendors and select foundry, materials, and packaging enablers rather than toward the entire category equally.