Electro-thermal co-design techniques have been demonstrated over the past decade to produce superior power electronic converter designs [1–4]. Many of these designs have been optimized for deployment in transportation applications where power density, gravimetric density, and efficiency are desirable performance parameters as long as the thermal management part of the system is not adversely affected. A research group that emerged from the NSF POETS Engineering Research Center was recently focused on such a challenge. The original effort was to develop a highly power dense motor drive that exceeded the current state of the art at the time for heavy equipment applications. Table 13.1 summarizes the state of the art at the beginning of the project and the targets that the team pursued. These specifications establish the frame of reference for the project’s activities. Team members were the University of Arkansas (lead), University of Illinois Urbana-Champaign, Wolfspeed, and Caterpillar.