Bibliographic record
Abstract
The 48 V DC bus is an intermediate power bus in all telecommunication systems. The traditional approach is to employ cascaded converters to step-down the supply voltage from 48 V to 5/12 V, and 5/12 V to 1 V at the point of load. This usually results in inefficient power conversion. To achieve high efficiency, this thesis is aimed to determine the best multi-inductor hybrid converter (MIHC) configuration, for a direct 48-to-1 V conversion, 90 A, 200 kHz application. The simulated 6-to-1 level is found to be the best topology. The gate drive loss and inductor conduction loss outweigh the benefits of the 8-to-1 level configuration. The 6-to-1 level MIHC is also verified experimentally to outperform the 2-to-1 topology in 48-to-1 V conversion with a peak efficiency of 90 % at 5 A, and 65% at 25 A. The 6-to-1 MIHC topology provides a good trade-off between circuit complexity and power conversion efficiency.
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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 | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
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".