hard-switch

ref:Reliable Operation of SiC JFET Subjected to Over 2.4 Million 1200-V/115-A Hard Switching Events at 150 ◦C


测试的波形与机构

  • 没有画电源,电容在充能完毕后释放
  • 频率由充电电路的RCtime 决定
  • inductance被minimal为250nH
  • gate trigger尽可能的快速切换gate电压
    结论是,峰值电流达到了2500W/cm2左右,burn-in还提高了conductionenergy
    ref:Stacked Strongly Coupled GaN/SiC Cascode Device With Fast Switching and Reclaimed Strong dv/dt Control
    在描述动态响应时,有这几个电容
  • Cin输入电容,从Gate端出发的电容(GD+GS)
  • Cout输出电容,从Drain端出发的电容(DS+DG)
  • Crss Gate和Drain之间的电容,它可能在开启时影响Gate的电压从而参与到软开关中
    动态的东西过段时间再看