← 返回

具有共源电感和开尔文源极连接的SiC MOSFET开关特性分析与应用评估

Switching Characteristic Analysis and Application Assessment of SiC MOSFET With Common Source Inductance and Kelvin Source Connection

语言:

中文摘要

本文对比分析了TO-247-3(共源电感)和TO-247-4(开尔文连接)封装SiC MOSFET的开关特性。研究指出,由于封装差异,采用传统测试电路会导致评估偏差和设计误导。文章深入探讨了两种封装下的栅极特性差异,为电力电子变换器的精确设计提供了理论依据。

English Abstract

SiC mosfets with packages of common source inductance (TO-247-3) and kelvin source connection (TO-247-4) are both widely used devices in the existing power conversion. Transient analysis of switching characteristics reveals some evaluation mistakes and misguidance design by using the conventional test circuit due to the difference packages. However, the more precise gate characteristic of TO-247-3...
S

SunView 深度解读

该研究对阳光电源的核心产品线(如组串式光伏逆变器、PowerTitan储能变流器及电动汽车充电桩)具有极高的参考价值。随着公司产品向高功率密度和高效率演进,SiC器件已成为主流选择。TO-247-4封装通过开尔文连接有效降低了共源电感对开关速度的限制,能显著提升逆变器效率并降低开关损耗。建议研发团队在设计高频功率模块时,严格区分封装特性进行驱动电路优化,以避免传统测试方法带来的设计偏差,从而提升产品在极端工况下的可靠性与电磁兼容性。