This book is about the systematic application of the switching function technique for
theanalysisofpowerelectroniccircuits. Theswitchingfunctionmethodofanalysisis
basedonthederivationofthevoltage–currentexpressionsofaswitchedcircuitcover-
ing all modes into a single expression, a ‘unified expression’. A ‘unified expression’
istheresultofapplyingthesuperpositiontheoreminordertocombinetheexpressions
of all modes of the circuit into one expression with time varying parameters.
