Improvements on voltage-resistant performance of bipolar static induction transistor (BSIT) with buried gate structure
The breakdown mechanism of power bipolar static induction transistor (BSIT) with buried gate structure is analyzed in depth. A power BSIT sample with high voltage-resistant capability has been designed and fabricated in this paper. The technological methods for improving high voltage performances ar...
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Veröffentlicht in: | Science China. Information sciences 2012-04, Vol.55 (4), p.962-970 |
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Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The breakdown mechanism of power bipolar static induction transistor (BSIT) with buried gate structure is analyzed in depth. A power BSIT sample with high voltage-resistant capability has been designed and fabricated in this paper. The technological methods for improving high voltage performances are represented. The active region of BSIT is surrounded with a deep trench to avoid any probable influences of various defects on device performances. Two field-limiting ring-shape junctions and one channel termination ring-shape junction are arranged around the gate region to reduce the electric field intensity. The gate-source breakdown voltage BV
GS
of power BSIT has been increased to 110 V from previous value of 50–60 V, and its blocking voltage is increased to 1700 V. The optimal geometrical dimensions for achieving the maximum breakdown voltage BV
GS
and blocking voltage
V
block
are also represented in the paper. |
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ISSN: | 1674-733X 1869-1919 |
DOI: | 10.1007/s11432-011-4523-1 |