Variable Turn-OFF Gate Voltage Drive for Voltage Balancing of High-Speed SiC MOSFETs in Series-Connection

Active gate drive with high accurate and self-adaptive closed-loop control is a promising approach to solving the imbalanced voltage problem of series-connected silicon carbide (SiC) mosfets. However, due to the inherent time propagation mismatching between Si- and SiC-based devices, behavior adjustment through Si-based ICs during the switching transient takes at least tens of nanos...