The Ćuk converter is a type of electrical inverter for converting power at one DC voltage to power at a different voltage. It uses a capacitor as its main energy-storage component, unlike most other types of converter which use an inductor. It is named after Slobodan M. Ćuk of the California Institute of Technology, who first presented the design in the paper referred to below.
Pronunciation note: Ćuk is pronounced Chook, to rhyme with book.
References
R. D. Middlebrook and S. M. Ćuk, A General Unified Approach to Modelling Switching Converter Power Stages, Proc. IEEE Power Electronics Specialists Conference, 1976 Record
The voltage ratios achievable by the DC-DC converters is summarised in Fig.
The advantage of the CUKconverter is that the input and output inductors create a smooth current at both sides of the converter while the buck, boost and buck-boost have at least one side with pulsed current.
The concept behind the foward converter is that of the ideal transformer converting the input AC voltage to an isolated secondary output voltage.
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