Hybrid Buck Converter With Constant Mode Changing Point and Smooth Mode Transition for High-Frequency Applications
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Bibliographic record
Abstract
To achieve high frequency and high efficiency over a wide load range, a monolithic voltage-mode dc-dc buck converter with advanced burst mode (ABM) and pulsewidth modulation (PWM) is presented in this paper. The load current is detected by estimating the currents flowing through the high-side and low-side switches, which maintains a near constant mode changing point. A counter-based scheme is used to achieve seamless and smooth transition between PWM and ABM. Both operating modes share the same control blocks, and no additional zero current detecting circuit is needed. In addition, the output stage switch size can be adjusted to reduce switching loss and improve efficiency under ultra-light load conditions. Experimental results show that the integrated 3 MHz converter achieves high efficiency from 80 to 91%, over a wide load range from 0.001 to 5 A. When the switch size is set to 1/3 of the maximum value, an additional 5% efficiency improvement at under 0.1 A load can be realized. The mode changing point is set at 0.4 A with less than 10% variation when the input voltage changes from 3 to 5 V. The load transient response is also improved significantly.
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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 | 0.001 |
| 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 it