To analyze the reason of the three-stage engine turn-off delay of some liquid rocket engine the stable state fault module of the engine was established in this paper .

为分析某液体火箭三子级发动机 推迟 关机的原因，建立了发动机稳态故障的模型。

Problems with high on-resistance that are seen in traditional vertical structure DMOSFET still appear in LDMOSFET and phenomena of turn-off delay and latch-up are seen in LIGBT as well .

传统垂直式DMOSFET高导通电阻的缺点在LDMOSFET中依旧存在，而垂直式IGBT 关闭 延迟和闩锁的现象，也在LIGBT中发生。

By using the disordered resistance to counteract the turn-off delay the fast shutdown of the Synchronous Transistor will be realized and the probability of the current back flow will be reduced . 6 .

该 电路利用失调电阻抵消同步管 关 断 延迟，达到了快速关 断同步管的目的，有效的减小了电流倒灌 现象的发生。