A Modified Positive Output Super-Lift Luo DC-DC Converter with Improved Voltage Boost Ability

An improved topology of the positive output super-lift Luo converter is proposed. The continuity of the input current waveform in the original topology is maintained while the voltage boost ability has been improved. Indeed, the voltage-lift technique has been applied twice, which leads to a voltage gain ratio higher than of the original super-lift topology. Some comparisons were made that indicated the topology is of great benefit, where a high voltage gain is required within the duty cycles lower than 50 percent, i.e. the proposed topology outperforms the quadratic boost converter both in voltage gain and efficiency, albeit within the specified operating range. The claims and calculations have been validated through experimental results.