page_title: Ćuk converter
section_title: Isolated Ćuk converter
hierarchical_section_title: Ćuk converter / Isolated Ćuk converter
caption_attribution_description: English: Theoretical zero-ripple output isolated Ćuk converter schematic. The circuit has control stability problems.Dansk: Teoretisk nul-ripple output isoleret Ćuk-konverter diagram. Kredsløbet har styringsmæssige stabilitetsproblemer. Lavet via: http://www.digikey.com/schemeit
context_page_description: The Ćuk converter is a type of DC/DC converter that has an output voltage magnitude that is either greater than or less than the input voltage magnitude. It is essentially a boost converter followed by a buck converter with a capacitor to couple the energy.
  Similar to the buck–boost converter with inverting topology, the output voltage of non-isolated Ćuk is typically also inverting, and can be lower or higher than the input. It uses a capacitor as its main energy-storage component, unlike most other types of converters which use an inductor. It is named after Slobodan Ćuk of the California Institute of Technology, who first presented the design.
context_section_description: The Ćuk converter can be made in an isolated kind. An AC transformer and an additional capacitor must be added.
  Because the isolated Ćuk converter is isolated, the output-voltage polarity can be chosen freely.
  As the non-isolated Ćuk converter, the isolated Ćuk converter can have an output voltage magnitude that is either greater than or less than the input voltage magnitude, even with a 1:1 AC transformer. However, the turns ratio can be controlled to reduce device stress on the input side. Additionally, the parasitic elements of the transformer, namely leakage inductance and magnetizing inductance can be used tuned to modify the circuit in to a resonant converter circuit which has much improved efficiency.
caption: Coupled inductor isolated Ćuk converter
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