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Monolithic GaN-Based Driver and GaN Switch With Diode-Emulated GaN Technique for
基于GaN的单片驱动器和开关采用二极管仿真技术,实现高频高效转换
50 MHz工作频率,120 V/ns转换速率,95.4%峰值效率
GaN单片驱动器二极管仿真技术高频转换高效率
▸使用二极管仿真技术减少反向导通
▸采用快速放电环路的主动自举控制器
▸具有双dv/dt控制的栅极驱动器减少开关过程中的栅极振荡
Abstract
In this article, the proposed monolithic gallium
nitride (GaN)-based driver uses the diode-emulated technique
to reduce reverse conduction through a meta-stable fast (MSF)
comparator with sub-0.2-ns deadtime. In addition, an active
bootstrap controller with a fast discharge loop is used to
reduce parasitic effects to improve the driving capability, thereby
increasing the switching frequency. Furthermore, the proposed
gate driver with dual dv/dt control can reduce the gate-ringing
during turn-on/