Straightforward Measurement Method of Common Source Inductance for Fast Switching Semiconductor Devices Mounted on Board
Straightforward Measurement Method of Common Source Inductance for Fast Switching Semiconductor Devices Mounted on Board
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DOI：
10.1109/tie.2017.2694411
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发表时间：
2017-04
影响因子：
7.7
通讯作者：
K. Umetani;K. Aikawa;E. Hiraki
中科院分区：
文献类型：
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作者：
K. Umetani;K. Aikawa;E. Hiraki
宽带隙半导体开关器件的最新进展使得功率转换器由于其超快开关能力而能够极高频操作。快速开关可能在共源电感处引起大的开关噪声，这可能增加开关损耗并导致误触发。因此，在快速开关功率变换器的实际设计中，常常强烈地要求测量共源电感。然而，共源电感的测量是困难的，因为1）隐藏在模制封装下方的布线路径显著地促成了该电感，2）选通电路与电源电路之间的互感也促成了该电感，和3）这个电感不能被定义为环路布线路径的杂散电感。本文通过提出一种新的共源电感的测量方法。该方法适用于已安装的电源电路。此外，所提出的方法提供了一个简单的测量程序与常见的仪器，如信号发生器，示波器，电压和电流探头。沿着测量原理，本文还提出了一个实验来评估所提出的方法。
Recent progress of widebandgap semiconductor switching devices enabled extremely high-frequency operation of power converters owing to their ultrafast switching capability. Fast switching may cause large switching noise at the common source inductance, which may increase the switching loss and lead to false triggering. Therefore, measurement of the common source inductance is often intensely required in practical design of fast switching power converters. However, measurement of the common source inductance is difficult, because 1) the wiring path hidden beneath the molded package significantly contributes to this inductance, 2) the mutual inductance between the gating circuit and the power circuit also contributes to this inductance, and 3) this inductance cannot be defined as the stray inductance of a loop wiring path. These difficulties are addressed in this paper by proposing a novel measurement method of the common source inductance. The proposed method is applicable to already-mounted power circuits. In addition, the proposed method offers a straightforward measurement procedure with common instruments, such as a signal generator, an oscilloscope, and voltage and current probes. Along with the measurement principle, this paper also presents an experiment to evaluate the proposed method.