The thesis analyses the schematic and PCB design process of the active rectifier for an ultrafast battery charger for electric vehicles. Ultrafast chargers are and will increasingly be a key technology, being at the heart of the transportation electrification. Therefore, the goal of this work is the design, assembly and testing of an Active Front End prototype for an off-board battery fast charger. The work has been carried out in collaboration with the interdepartmental Power Electronics Innovation Center (PEIC) at the Politecnico di Torino and it deals with the detailed hardware design of a 50 kW AFE, from its schematics to the final printed circuit boards (PCBs) and the testing of the converter.