A High-Voltage DC–DC Buck Converter With Dynamic Level Shifter for Bootstrapped High-Side Gate Driver and Diode Emulator
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Bibliographic record
Abstract
Considering the propagation delay, dVSW/dt immunity, and power dissipation issues in the bootstrapped high-side gate driver design, a monolithic high-voltage dc-dc buck converter with a high-speed dynamic level shifter and improved gate drive buffer is presented in this article. With the introduction of instantaneous dynamic current, the propagation delay of the level shifter is reduced to 1.13 ns for the high-side switch. The dVSW/dt immunity is enhanced by a dynamic current compensation during positive slewing and a diode voltage clamp during negative slewing. The average current consumption of the level shifter is only 8.45 μA at a switching frequency of 1 MHz. The proposed gate drive buffer eliminates the shoot-through current with the use of dead-time control. The compact level shifter and buffer are also used to drive an integrated p-channel mosfet transistor serving as a bootstrap diode emulator. Experimental results show that the fabricated converter with the proposed scheme regulates well with an 18 V input, 1.05 V output, and 2 A load current. Also, high efficiency of up to 93% is achieved.
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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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| 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)
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Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
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