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碳化硅MOSFET第三象限特性研究

Investigation Into the Third Quadrant Characteristics of Silicon Carbide MOSFET

语言:

中文摘要

由于碳化硅(SiC)MOSFET性能优越,其应用日益广泛。为提升功率密度,研究倾向于利用MOSFET的第三象限特性替代外并肖特基二极管进行死区续流。本文深入探讨了SiC MOSFET第三象限的导通特性、体二极管行为及其对系统效率和可靠性的影响。

English Abstract

Owing to the superior performances, silicon carbide (SiC) metal oxide semiconductor field effect transistors (mosfets) attract a lot of attention. To increase the power density, it is desired to use the third quadrant (3rd-quad) characteristics of the mosfet rather than the externally paralleled Schottky diode for freewheeling during the deadtime. It has been known that the 3rd-quad is far more th...
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SunView 深度解读

该研究对阳光电源的高功率密度产品线至关重要。随着PowerTitan系列储能系统及组串式逆变器向更高功率密度演进,利用SiC MOSFET的第三象限特性替代外置二极管,可有效减小模块体积并降低损耗。建议研发团队在设计高频DC-DC及逆变电路时,重点评估该特性在不同死区时间下的导通损耗与可靠性,优化驱动电路以抑制第三象限工作时的电压尖峰,从而进一步提升iSolarCloud平台下各产品的能效表现与市场竞争力。