Bibliographic record
Abstract
A novel topology to achieve 4:1 voltage step down, aimed at 48 volt to 12 volt conversion, is presented. The primary application for 48 volt to 12 volt conversion is for server power supplies as part of an Intermediate Bus Architecture, as Google and other large companies are pushing to switch from 12 volt to 48 volt server architecture to improve the performance of their data centers. The topology presented in this paper makes use of multi-level switching with flying capacitors to minimize the voltage stress of the switches, allow for significant reduction in the size of the magnetic components by reducing the voltage applied to the inductor, and enable low switching frequencies to be used. The switching scheme used in the topology causes the output inductor to see only the capacitor ripple voltage across its terminals. As this inductor sees almost zero voltage, the ripple current and reliance on magnetics is significantly reduced in this circuit. Through these advantages, the topology can achieve a peak efficiency of 99.5% for 48 volt to 12 volt conversion.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.011 | 0.003 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".