This chapter concentrates on the design process and practical applications for developing new hybrid DC–DC converters. It begins by outlining the systematic design flows used to create hybrid converters. This chapter then introduces specific new examples built upon a 3:1 pre-stage series–parallel configuration. These examples are categorized by the number of buck cells (1, 2, or 3) and include a detailed step-by-step guide to their design. Through these cases, this chapter illustrates how the concepts covered in earlier chapters are translated into real-world converter development.