A Study on Latch up Characteristics with Structural Design of IGBT

IGBT의 구조에 따른 래치 업 특성의 변화 양상에 관한 고찰

To improve latch up characteristics of IGBT, this paper proposed new structure with reverse channel. IGBT proposed by this paper were designed on SOI substrate, $p^+$-substrate, and $n^+$-substrate, respectively. As a result of the simulation, we had achieved high latch up voltage and high conduction current density at IGBT with proposed structure. Latch up voltage of Conventional IGBT was 2.5V but IGBT with proposed structure was latched up at $5{\sim}94V$, respectively. And was showed high conduction current desity($10^4{\sim}10^7A/cm^2$)