Application of Y-cap on noise attenuation in low power part of power converter
Bibliographic record
Abstract
The high frequency voltage oscillation on the DC/DC gate driver of a H-bridge created during the turn-off intervals of the power switches has critical impact on component reliability and control quality. This noise can propagate freely in the low power plane to other functional circuits of the converter due to the performance degradation of EMI filter in high frequency range above 30MHz. In this paper, the origin of the high frequency voltage oscillation is analyzed and a new way of utilizing Y-cap is proposed to reduce this voltage oscillation before it propagates in the low power plane. The key idea is to provide a current return path with low impedance at the oscillation frequency from the input of DC/DC gate driver to the switches. Therefore, the high frequency voltage drop on DC/DC gate driver is attenuated. The proposed approach is practically effective to improve noise performance of a converter at the final stage design and maintenance phase with minimum efforts of calculation and measurement. To support the analysis, the experiments with a Buck converter with a typical H-bridge driver circuit are performed. Several combinations of Y-caps are used to prove the effectiveness of the proposed method.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| 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 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 teacher head, 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".