BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 illustrates in block diagram form a conventional half bridge switch mode power conversion topology;
FIG. 2 illustrates in block diagram form a conventional full bridge switch mode power conversion topology;
FIGS. 3A and 3B illustrate approximate locations of parasitic inductances in the conventional half bridge switch mode power conversion circuit of FIG. 1 and their effect in graphical form, respectively,
FIGS. 4A and 4B illustrate output load characteristics in relationship to turn-on and turn-off periods of power switches S1 and S2 in the conventional half bridge switch mode power conversion circuit of FIG. 1 and a graphical representation of their operation, respectively,
FIGS. 5A and 5B illustrate a typical RCD snubber and a prior art power switching circuit that uses a conventional RCD snubber, respectively,
FIGS. 6A-6D illustrate preferred circuit arrangements of the switch mode power converter having multiple inductor windings equipped with snubber circuits;
FIGS. 7A-7C illustrate a variation of the preferred circuit arrangements of the switch mode power converter having multiple inductor windings equipped with snubber circuits of FIGS. 6A-6D;
FIG. 8 illustrates a variation of the preferred circuit arrangements of the switch mode power converter having multiple inductor windings equipped with snubber circuits of FIG. 7A;
FIG. 9 illustrates a variation of the preferred circuit arrangements of the switch mode power converter having multiple inductor windings equipped with snubber circuits of FIG. 7A;
FIG. 10 illustrates a variation of the preferred circuit arrangements of the switch mode power converter having multiple inductor windings equipped with snubber circuits of FIGS. 6A-6D;
FIG. 11 illustrates a circuit arrangement of the switch mode power converter having multiple inductor windings equipped with snubber circuits that is suitable for switch mode topologies that use high side referenced power switches;
FIG. 12 illustrates a variation of the circuit arrangements of the switch mode power converter having multiple inductor windings equipped with snubber circuits shown in FIGS. 7A-7D;
FIG. 13 illustrates a variation of the circuit arrangements of the switch mode power converter having multiple inductor windings equipped with snubber circuits of FIGS. 7A-7D;
FIGS. 14 and 15 illustrate a variation of the circuit arrangements of the switch mode power converter having multiple inductor windings equipped with snubber circuits of FIGS. 10-13 with the inclusion of an RCD snubber,
FIG. 16 illustrates a boost converter using the circuit arrangements of the switch mode power converter having multiple inductor windings equipped with snubber circuits;
FIG. 17 is a variation of the circuit arrangement of the switch mode power converter having multiple inductor windings equipped with snubber circuits shown in FIG. 7A; and
FIG. 18 is a variation of the circuit arrangement of the switch mode power converter having multiple inductor windings equipped with snubber circuits shown in FIG. 17.
Patent Application
20070216385
