Modeling and analysis of closed-loop gate drive

In this work, the closed-loop gate drive is modeled and mathematically analyzed. The simulated results show good agreement with experimental results. The reported analysis method and tool can provide guidelines for the closed-loop gate drive design in real applications. This work proposed a new mathematical method for IGBT switching transient behaviors modeling and gate drive control analysis. In the proposed method, equivalent circuits are developed according different power device operating conditions and circuit behaviors are mathematically described with state equations.