SemiAnalysis's May 26, 2026 Phase 4 architecture model gives roughly 87% utility-to-VRM for SST/800 VDC; the guide's representative four-stage AC chain (Chapter 4.1) gives roughly 82%.
~87% SST/800 VDC (SemiAnalysis model) vs ~82% AC (guide's four-stage example)modeled
| Value kind | modeled — Interpret this value according to its displayed kind, scope, source, and as-of date. |
|---|---|
| Scope | Modeled, not measured. Chapter 4.1 works two examples from assumed stage efficiencies: a four-stage AC chain, 0.99 × 0.94 × 0.96 × 0.92 ≈ 82% (80.4–86.7% across its assumed UPS and VRM efficiencies), and a three-stage DC chain, 0.98 × 0.965 × 0.92 ≈ 87%. SemiAnalysis's May 26, 2026 Phase 4 model separately gives ~87% for SST/800 VDC. Matching figures do not make different chains equivalent; compare them at the same boundary and load, with distribution losses counted separately. |
| As of | 2026-05-26 |
| Source | SemiAnalysis, Inside the 800VDC Revolution, Phase 4 model, May 26, 2026. |
| Review | checking…review by 2027-01-31 · standard cadence |
| Recorded changes | last 2026-10-19 · 5 revisions tracked |
| Claim id | end-to-end-electrical-chain-efficiency-800vdc |
Where the guide uses it
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