a multi - phase transformer type dc - dc converter . in one embodiment , the multi - phase transformer type dc - dc converter includes a plurality of dc - dc converters comprising a plurality of transformers , respectively , wherein the plurality of dc - dc converters are coupled in parallel between an input and an output . a circuit is coupled to the plurality of dc - dc converters and configured to generate a plurality of clock signals for use by the plurality of dc - dc converters , respectively , wherein the plurality of clock signals are phase shifted with respect to each other .