Design and Analysis of Dual Switch-Based Two Quadrant Bi-Polar DC-DC Converter

This paper introduces a sixth-order bi-polar DC-DC converter (SOBPDC) that is capable of smoothly varying the voltage gain with duty ratio and providing an output voltage of either polarity. The proposed converter is an enhancement of a conventionally modified bi-polar converter that includes a feature for a high voltage conversion ratio while minimizing the number of controlled switches required. The SOBPDC operates in either bi-polar mode based on the power demanded by the load and energy requirements. When the duty ratio is less than 0.38, the SOBPDC provides positive output voltage with the bucking operation. Conversely, the SOBPDC utilizes buck-boosting operation at high-duty ratios to generate a negative output voltage. A mathematical model of the proposed converter and a comparative analysis has been conducted. The simulation study of A 48 V to ±36 V, 50 kHz is carried out and presented to validate the proposed converter's effectiveness.