A New Quadratic Isolated Step-Up DC-DC Converter

This paper introduces a novel boosting DC-DC converter design integrating a quadratic boost converter, an active clamp snubber, and a charge pump capacitor cell. The converter architecture incorporates a switched capacitor cell and a transformer with a low turn-ratio to achieve high voltage output levels in an isolated configuration. By employing a quadratic boost converter on the primary side, the input voltage is augmented, leading to enhanced overall performance and efficient power transmission from input to output. Operating with an input voltage of 40 V, the designed topology prototype yields an output voltage of 200 V and an output power of 100 W. A number of advantages can be attributed to this topology, including Zero Voltage Switching (ZVS) for the switches, significant voltage amplification without high duty cycles or turns ratio, and reduced voltage stress. The converter under consideration was fabricated in the laboratory for the purpose of experimental validation, and the theoretical analysis is consistent with the experimental results.