Comparison of Boost Converter Topologies for Charging Single Cell Li-ION

The paper presents a study for comparing boost converters for single cell Li-ION battery boosting circuit used in power-bank devices. A comparison is made with a synchronous internal switch boost converter against an external switch non-synchronous converter. Efficiency, load-and line-regulation characteristics are presented alongside the operating regimes of both converters. The study can be useful for field applications engineers to determine the choice between an internal switch or external switch topology and synchronous against non-synchronous converter. On the other hand, the research is useful from a methodological point of view in studying the basic circuits of power electronic converters with different applications in power electronics courses, as they aid and support the development of analytical thinking and the accumulation of the students' practical experience during the different courses.