Tri-State DC-DC Buck Converter with Efficient Conversion Ratio

In modern electronic applications the requirement of step down dc-dc conversion is much more. To estimate this process this dc-dc buck converter is implemented with perfect duty cycles as a proposed work. The converter comprises symmetrical half bridges and its structures. The voltage differences across two bridges has been examined in presented and balanced condition of operation is achieved. Then a modulation strategy which can satisfy the operation of the converter is proposed with the capacitor voltages self balance, and the function of the output dc voltage Vo is deduced.