A multi-level, multi-phase buck converter with shared flying capacitor for VRM applications
Bibliographic record
Abstract
This paper introduces a multiphase high step-down DC-DC converter that is suitable for voltage regulator module (VRM) applications. In particular, this converter is derived from the conventional flying capacitor multilevel converter. Despite being a multiphase topology, the converter contains just a single flying capacitor that reduces voltage swing at the inductor switching nodes. Furthermore, all switches experience a maximum voltage stress of half the input voltage providing benefits such as the use of transistors with better figures of merit (FOM), as well as reduced switching losses. The converter is well suited for high conversion ratios and high load output required by VRMs as the freewheeling path of each phase contains only one switch. The effectiveness of this topology is verified with an experimental prototype with wide input voltage 12V/24V, and load Vout= 1.2 V, Iout≤ 40 A operating at 500 kHz switching frequency. Peak efficiencies of 93.2% at 16A, and 89.4% at 28A, are attained with inputs at 12 V and 24V, respectively.
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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 | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".