Generalized topologies of single-stage input-current-shaping circuits

In this paper, two generalized topologies of single-stage input current shaping (S²ICS) circuits are derived: S²ICS circuits with two-terminal ICS cells and S²ICS circuits with three-terminal ICS cells. It is shown that most of the published S²ICS circuits belong to either of the two generalized topologies. It is also shown that the two generalized S²ICS topologies are functionally equivalent. Based on the generalized approach, a few new S²ICS circuits are developed. Experimental results obtained on a selected pair of S²ICS circuits with 2-terminal and 3-terminal ICS cells are also provided