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p-GaN栅极功率HEMT开关运行下动态关断漏电流的物理经验模型

A Physics-Based Empirical Model of Dynamic IOFF Under Switching Operation in p-GaN Gate Power HEMTs

语言:

中文摘要

本文基于物理机制,建立了p-GaN栅极高电子迁移率晶体管(HEMT)在开关运行下动态关断漏电流(IOFF)的经验模型。模型综合考虑了开关频率、占空比、关断延迟时间、栅极驱动电压及温度等关键运行条件对漏电流的影响。

English Abstract

In this article, an empirical model of dynamic off-state leakage current (IOFF) under switching operation in p-GaN gate high-electron-mobility transistors is established based on its underlying physical mechanism. The impacts of relevant switching conditions, including switching frequency, duty cycle, off-state delay time, gate drive voltage, and temperature are all considered in the modeling of d...
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SunView 深度解读

随着阳光电源在户用光伏逆变器及小型化充电桩产品中对高功率密度要求的提升,GaN器件的应用前景广阔。该模型揭示了p-GaN HEMT在动态开关过程中的漏电流演变规律,对于优化逆变器及充电桩的驱动电路设计、提升系统效率及热管理水平具有重要指导意义。建议研发团队在下一代高频化、小型化功率模块设计中,引入该模型进行可靠性评估,以规避动态漏电流引起的损耗增加及潜在失效风险,从而进一步提升产品在极端工况下的稳定性。