The given invention provides a hybrid three-level dc-dc converter comprising a first switching arm, a second switching arm, four discrete diodes, two capacitors, an inductor having one point of said inductor connected to a common center point of said first switching arm, a dc voltage connected in series with said inductor and to a common center point of the second switching arm, four IGBT transistors wherein each said IGBT transistors are with built-in anti-parallel diodes.