Исследование процесса спада напряжения при ударно-ионизационном переключении силовых тиристоров

Translated title of the contribution: Study of the voltage drop process in high-power thyristors switched in impact-ionization mode

А.И. Гусев, С.К. Любутин, С.Н. Рукин, С.Н. Цыранов, Г.А. Оганесян

Research output: Contribution to journalArticlepeer-review

Abstract

Voltage drop process in high-power thyristors switched to a conducting state by an impact-ionization wave, which is excited by overvoltage pulse with a nanosecond rise time, has been investigated. In experiments the input voltage with a rise rate dU/dt in the range of 0.5 to 6 kV/ns was applied across the thyristor having 2 kV DC operating voltage. Numerical simulations show that calculated and experimentally observed times of the voltage drop are in good quantitative agreement in the case only when an active area of the structure, through which a switching current flows, depends on the value of dU/dt. The active area is increased with dU/dt increasing as well as with increasing of the silicon initial resistivity. The active area is approximated monotonously to the total area of the structure at dU/dt values of over 12 kV/ns.
Translated title of the contributionStudy of the voltage drop process in high-power thyristors switched in impact-ionization mode
Original languageRussian
Pages (from-to)680-688
Number of pages9
JournalФизика и техника полупроводников
Volume51
Issue number5
DOIs
Publication statusPublished - 2017

GRNTI

  • 29.00.00 PHYSICS

Level of Research Output

  • VAK List

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