Abstract:
Transformational techniques unifying synthesis of two-state DC-DC converters and analytical
synthesis techniques allowing generation of all possible converters meeting a certain criteria already exist.
The analysis of a family of converters derived from a single converter cell has also been uni ed. Current
waveforms generated by the family of converters were shown to be related. However, a concept or basic
building blocks that facilitate uni ed synthesis, analysis, prediction of current waveforms and assignment
of switch states over a very wide range of DC-DC converters is still lacking. This study will propose
three 3-terminal basic building blocks and one 3-terminal lter block. It will be shown that between them,
they are suf cient for realizing all non-isolated DC-DC converters excluding those with coupled inductors.
The various DC-DC converters fall into those realized through cascade, stacked, stacked plus cascade,
interleaved/paralleled or differential connection of the basic building blocks. A systematic approach for
evaluating input-output current gains will be presented. Moreover, a basic building block will be shown to
have xed switching states for proper operation. This gives rise to the generation of a unique set of current
waveforms at the three terminals irrespective of where a basic building block is embedded. It has been shown
that the effort and time needed to design DC-DC converters can be reduced as switching device stresses can
be estimated without the need for tedious rst principle derivations.
