This paper investigates the impact of current sensors on the measurement of transient currents in fast-switching power semiconductors in a double pulse test (DPT) environment. We review previous research that assesses the influence of current sensors on a DPT circuit through mathematical modeling. The developed selection aids can be used to identify suitable current sensors for transient current measurements of fast-switching power semiconductors and to estimate the error introduced by their insertion into the DPT circuit. Afterwards, this analysis is extended by including further elements from real DPT applications to increase the consistency of the error estimation with practical situations and setups. Both methods are compared and their individual advantages and drawbacks are discussed. Finally, a recommendation on when to use which method is derived.

中文翻译：

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电流传感器测量功率半导体开关电流的适用性


本文研究了电流传感器对双脉冲测试 (DPT) 环境中快速开关功率半导体瞬态电流测量的影响。我们回顾了之前通过数学建模评估电流传感器对 DPT 电路影响的研究。开发的选择辅助工具可用于识别适合快速开关功率半导体瞬态电流测量的电流传感器，并估计由于将其插入 DPT 电路而引入的误差。然后，通过包含来自实际 DPT 应用的更多元素来扩展此分析，以提高误差估计与实际情况和设置的一致性。对这两种方法进行了比较，并讨论了它们各自的优缺点。最后，导出了关于何时使用哪种方法的建议。