Design and simulation of open and closed loop control for transformerless DC-DC buck-boost converter using switched-capacitor structure

In this Paper, the method of achieving steep step up and Step down voltage is implemented with the help switched capacitor structures. When the active switch of the converter is on, the capacitors in the C-switching blocks are discharged in parallel. When the active switch is off, the capacitors in the C-switching blocks are charged in series. The proposed converters contain the same rating of elements as the quadratic converters. The superiority of the new converters is mainly based on less energy in the magnetic field, leading to saving in the size and cost of the inductors, and less current Stresses in the switching elements, leading to smaller conduction losses.