过电流保护功能（VCE(sat) 检测）和内置有源米勒钳位功能
我们介绍了一种具有内置VCE(sat)检测和米勒钳位功能以保护IGBT免受过电流损坏的智能栅极驱动光耦（TLP5222，TLP5212，TLP5214A和TLP5214）。VCE(sat)检测电路负责监测IGBT的VCE(sat)电压，如果发现存在过电流的情况即执行光耦输出的软关断。同时向控制器发送故障信号。米勒钳位功能将抑制栅极电位升高和IGBT故障，即绕过IGBT经光耦内部关断接地时产生的米勒电流。TLP5222，TLP5212，TLP5214A和TLP5214还集成了许多其它功能，包括全摆幅电压输出和UVLO功能。减少支持这些功能的外部组件的数量，有助于降低成本和减少PCB的尺寸。
集电极电压由DESAT引脚监测，当功率器件发生过电流时，VCE(sat)升高。当TLP5222，TLP5212，TLP5214A和TLP5214 DESAT引脚电压超过6.5V时，VOUT柔和地变低（软关断），同时向控制器发送故障信号。
智能栅极驱动IC光耦
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