Overload capability and dynamic behaviour of low and high voltage IGBT and ultra fast softswitching diode
Bibliographic record
Abstract
By a vertical shrink of the NPT IGBT to a structure with a thin n base and a low doped field stop layer a new IGBT can be realized with drastically reduced overall losses. Especially the combination of the field stop concept with the trench transistor cell results in the almost ideal carrier concentration for a device with minimum on state voltage and lowest switching losses. This concept has been developed for IGBTs and diodes from 600 V up to 6.5 kV. This paper shows the save operation area behaviour requirements for switching characteristics for low voltage devices (600 V/1200 V) and high voltage devices (3.5 kV/6.5 kV). It will be discussed that the overall switching behaviour for inductive loads is determined by the diode and IGBT at equivalent positions. In particular at high voltage applications precautions have to be taken during turn off and turn on. During turn on the dynamic electrical field strength of the diode is important to observe and during the turn off the same situation occurs in the IGBT
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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 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 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".