Comment on “Series Loss-Free Resistor: Analysis, Realization, and Applications”

In the paper by Barbi (2021), the concept of series loss-free resistor (SLFR) was presented. The SLFR was realized by novel circuitry derived by topological variation of classical noninverting buck–boost converter operated in discontinuous-conduction mode. The purpose of this note is complementing the work of Barbi (2021) by demonstrating that SLFR may also be realized by classical converters employing dedicated current loops. Validation is carried out by realizing the capacitors balancer example by Barbi (2021) by means of a classical noninverting buck–boost converter, demonstrating the results similarity.