SST · Solid-State Transformer
Solid-state transformer/power-electronics conversion from medium voltage toward a rack DC bus. About 98% is a named 400 kW prototype result; about 99% is a target, not a general shipping-product efficiency. Preserve topology, load point, voltage, and measurement boundary.
Power-electronics conversion integrating transformer isolation and voltage conversion; compare efficiency only for a named topology, rating, load point, voltage range, and measurement boundary.
Also written as: Solid-State Transformer
Current numbers
~87% SST/800 VDC (analyst model) vs ~82% AC (guide fixture)end-to-end electrical-chain efficiency, 800VDC/SST chain vs a typical AC path (utility-to-VRM) — a system gain only co-design captures
~87%SemiAnalysis’s modeled SST/800 VDC architecture; compare with Chapter 4.1’s separate assumed AC ledger
NEC 2029 (code); UL listing pending800 VDC code and listing timeline: full code support targets NEC 2029, and no data-center SST had completed UL certification as of May 2026 (SemiAnalysis)