Analysis of transient behavior of SiC power MOSFETs based on surface potential model and its application to boost converter

T. Okuda, Yohei Nakamura, T. Hikihara, Michihiro Shintani, Takashi Sato
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引用次数: 2

Abstract

A DC-DC boost converter is fabricated using a SiC MOSFET and the characteristics are analyzed with SPICE simulation. We use a device model based on surface potential for SiC MOSFET, which was proposed this year by our group. It is found that the SPICE simulation well explains the experimental waveforms of the fabricated boost converter even at very high frequencies of 1–5 MHz. This result suggests that the proposed device model based on surface potential is applicable to design high-frequency power converters.
基于表面电位模型的SiC功率mosfet暂态行为分析及其在升压变换器中的应用
利用SiC MOSFET制作了一种DC-DC升压变换器,并对其特性进行了SPICE仿真分析。我们使用基于表面电位的SiC MOSFET器件模型,该模型是我们小组今年提出的。发现SPICE模拟很好地解释了制备的升压变换器在1 ~ 5 MHz的高频下的实验波形。结果表明,基于表面电位的器件模型适用于高频功率变换器的设计。
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