I. Introduction
There is an ongoing drive toward miniaturization of power supplies to provide a more granular power management system for the most basic of portable electronics up to high-performance computing loads. However, advancement is somewhat hindered by the performance of microinductors [1], [2]. The main limitations are inductance levels achievable and microinductor efficiency. This paper presents a method to improve the overall performance of DC–DC converters using microinductors, while also providing a means to improve light-load efficiency. The fundamental idea is to replace a single inductor with a number of parallel inductors that would have the same equivalent inductance, current handling capacity, and footprint area as the single inductor.