In order to eliminate the voltage oscillation caused by the reverse recovery of the rectifier diodes , a resonant inductance and two clamping diodes can be introduced to the primary side 为了消除输出整流管的电压尖峰,可以在原边加入一个谐振电感和两个箝位二极管。
After simulating the reverse recovery characteristics , the forward and backward i - v characteristics , carries distribution and current vectors et al by medici , the optimal design to some key parameters is proposed 同时对器件反向恢复特性、正反向-特性及载流子分布、电流矢量等物理量进行了模拟和详细的机理分析。
After simulating the reverse recovery voltage and current characteristics , the forward and backward i - v characteristics and temperature characteristics with medici , the optimal design to some key parameters is proposed 在利用medici对它们的反向恢复、 -特性和温度特性等进行模拟后及分析后,又给出?基区渐变掺杂厚度、方式以及台面模型等参数的优化设计过程。
A lot of works has been done to reduce the reverse recovery time and improve the general performance in the international power devices ’ research field . they focus on the design of device structure and lifetime controlling technologies 围绕着如何减下frd的反向恢复时间、提高综合性能,国际功率半导体器件领域进行了广泛的探讨,热点集中在了器件结构设计和寿命控制等技术上,其中又以寿命控制技术为为主要焦点。
With the high frequency trend of power electronic technique development , the switching power diodes must be conducted and turn off very fast , that is , the diodes should have short reverse recovery time , low peak reverse current and soft recovery characteristics 电力电子技术高频化的发展趋势要求功率开关二极管必须具有快速开通和高速关断的能力,即具有短的反向恢复时间( t _ ( rr ) ) ,较小的反向恢复电流( i _ ( rm ) )和软恢复特性。