Single-Stage Coupled-Inductor Sepic-Type HB-LED Driver with Soft Switching for Universal Line Input

Figure 6

Equivalent circuits corresponding to the eight operation modes: (a) mode 1, (b) mode 2, (c) mode 3, (d) mode 4, (e) mode 5, (f) mode 6, (g) mode 7, and (h) mode 8.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)