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传输线脉冲(TLP)是一种在ESD事件的电流和时域中测试器件性能的方法。
器件ESD抗扰度测试的常规模型包括人体模型(HBM)、机器模型(MM)和充电模型(CDM),而IEC 61000-4-2和其它标准规定了系统级ESD抗扰度测试。由于规定的信号上升时间不同,不同的测试方法可能得出不同的结果。
TLP测试通过将悬空电缆充电至预定电压并将其放电至被测器件(DUT)来生成方波。通过改变电缆长度和滤波器特性,很容易改变脉冲宽度和上升时间。
TLP测试使用宽度为纳秒量级的短脉冲,因此可在不引起热破坏的情况下获得高压、大电流区域(即ESD电压/电流区域)的I-V特性。
TLP测试可作为ESD设计的一种辅助手段,因为其不仅可以比较不同TVS二极管的ESD保护性能,还可比较TVS二极管的EDS耐受性与需受保护的IC的I-V曲线。