Ćuk converter
![Fig 1: Schematic of a non-isolated Ćuk converter.](/Images/godic/202501/07/Cuk_conventions.svg2628.png")
![Fig 2: The two operating states of a non-isolated Ćuk converter.](/Images/godic/202501/07/Cuk_operating.svg2628.png")
![Fig 3: The two operating states of a non-isolated Ćuk converter. In this figure, the diode and the switch are either replaced by a short circuit when they are on or by an open circuit when they are off. It can be seen that when in the off-state, the capacitor C is being charged by the input source through the inductor L1. When in the on-state, the capacitor C transfers the energy to the output capacitor through the inductance L2.](/Images/godic/202501/07/Cuk_operating2.svg2628.png")
![Coupled inductor isolated Ćuk converter](/Images/godic/202501/07/Zero-IO-ripple-isolated-cuk-converter2628.png")
The Ćuk converter (pronounced Chook; sometimes incorrectly spelled Cuk, Čuk or Cúk) 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.