A Novel 4H-SiC JBS-Integrated MOSFET With Self-Pinching Structure for Improved Short-Circuit Capability
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Bibliographic record
Abstract
Monolithic integration of junction barrier-controlled Schottky (JBS) diode with SiC MOSFET (termed JMOS) offers unique advantages. However, the short-circuit (SC) ruggedness issue stands in the way of the development of the conventional JMOS. The purpose of this numerical study is to investigate a new 4H-SiC JMOS with a self-pinching (SP) structure formed in the JFET region (termed SP-JMOS). The SP structure features that an N-type current spread layer is sandwiched between the P+ layer and the buried P-shield layer, forming a lateral JFET channel. In the forward conduction state, the lateral JFET channel self-pinches off and clamps the potential, thus limiting the saturation current of the device. In the blocking state, both the P+ layer and the buried P-shield layer collaboratively shield the Schottky contact and the SiC/SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> interface from a high electric field for long-term reliable operation. Numerical simulation results show that the proposed SP-JMOS not only withstands a roughly <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$2.6\times $ </tex-math></inline-formula> longer SC withstanding time than that of the conventional JMOS, but also shows an ultralow oxide electric field in the SP-JMOS.
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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 | 0.001 |
| 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)
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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