Design consideration for large current GTO

T. Yatsuo, S. Kimura, Y. Satou
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引用次数: 13

Abstract

Current crowding of a GTO (gate-turn-off) during turn-off operation and operating limits without breakdown were investigated by a current-distribution-measurement method and by computer simulation. It was found that to increase the maximum turn-off current, current crowding is suppressed by a gate structure optimized for the distribution of a steady on-state current. Also, current flowing into a unit GTO is reduced by optimizing the number of unit GTOs so that they are operating in a safe operating area. The characteristics of a 4000 A trial GTO fabricated on the basis of these considerations are reported.<>
大电流GTO的设计考虑
采用电流分布测量方法和计算机模拟研究了关断过程中的电流拥挤现象和无击穿的工作极限。研究发现,为了增加最大关断电流,对稳态电流分布进行优化的栅极结构抑制了电流拥挤。此外,通过优化单元GTO的数量,可以减少流入单元GTO的电流,使它们在安全的操作区域内运行。报道了在此基础上制作的4000a GTO试验件的特点。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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