会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 15. 发明申请
    • THYRISTOR WITH INTEGRATED DU/DT PROTECTION
    • 具有集成DU / dt保护晶闸管
    • WO1997044827A1
    • 1997-11-27
    • PCT/DE1997000927
    • 1997-05-07
    • SIEMENS AKTIENGESELLSCHAFTRUFF, MartinSCHULZE, Hans-JoachimPFIRSCH, Frank
    • SIEMENS AKTIENGESELLSCHAFT
    • H01L29/74
    • H01L29/7424H01L29/102H01L29/7428
    • Too great a dU/dt load on a tyristor can trigger uncontrolled firing in the area of the cathode surface. Because the plasma cannot easily spread out in that area and, consequently, the currency density quickly reaches critical values, the danger exists that local overheating may destroy the tyristor. The thyristor proposed has a centrally located BOD structure and several auxilliary thyristors which surround the BOD structure in a ring form (AG 1-5 (AG = amplifying gate)). Below/Underneath the emmitter area (11) assigned to the innermost auxilliary thyristor (1. AG), the resistance of the base facing the cathode (8) is locally increased. Since the length (L) and the coating resistance of this ring zone (15) decisively influences the dU/dt load capacity of the first auxilliary thyristor (1. AG), these parameters can be suitably dimensioned to ensure that the central thyristor area has the lowest dU/dt sensitivity of the system and, consequently, consistently fires first, when a critical rate of rise in the value of the off-state voltage is reached. This invention can be applied to light-triggered power thyristors.
    • 在过大的dv / dt应力可以点燃晶闸管这种不受控制的在阴极表面的面积。 由于等离子体存在传播不良和电流密度,因此很快达到临界水平,有晶闸管的破坏的局部过热的风险。 所提出的晶闸管具有一个位于中心的BOD结构(BOD =盈亏过二极管)和包围环状辅助晶闸管多个BOD结构的(1-5。AG)(AG =放大栅)上。 最里面的辅助晶闸管(1 AG)发射极区域(11)相关联的下面局部增大阴极侧基的电阻(8)。 由于宽度(L)和所述环形区(15)的薄层电阻决定性地影响所述DU / DT-携带第一辅助晶闸管(1 AG),可以是由这些参数的适当尺寸确保,的容量,中央晶闸管最小的dU / dt的 具有该系统的压痛,因此它总是在第一超过所述电压梯度的临界值点燃。 光触发晶闸管电源。