This paper introduces an isolated and regulated ultra-flat DC-DC power converter designed to address the energy supply challenges posed by the increasing demand for High Performance Computing (HPC) and AI computation. The converter is engineered to accommodate an extremely wide input voltage range of 15V to 150V and deliver significant gain at low output voltages. To achieve this, the converter utilizes a Direct Power Converter topology with an added active clamp to the primary side switch. The key advantage of this design lies in the reduction of then number of switches int the current paths, which enhances its efficiency. The converter features three ports that can function as either input or output, with one port optionally serving as intermediate storage. The Segmented Winding Transformer is employed for internal current path reduction, and the low-profile (3.5mm height) packaging further enhances its compactness. The study validates the converter's performance in both open-loop and closed- loop configurations.
