Active Gate Drivers for High-Frequency Application of SiC MOSFETs By Alejandro Paredes Camacho Thesis submitted in partial fulfilment of the requirement for the PhD degree issued by the Universitat Politècnica de Catalunya, in its Electronic Engineering Program. Supervisors: Dr. Jose Luis Romeral MartÃnez Dr. Vicent M. Sala Caselles Terrassa, Barcelona December 2019