Published Paper Details:

A High Gain Single Switched Quadratic Boost converter architecture is presented for low-voltage renewable and portable energy systems requiring efficient voltage amplification, reduced semiconductor stress, and compact passive components. The proposed topology combines an active switchedinductor network with a multi-stage charge-pump mechanism to achieve substantial voltage boosting without the need for extreme duty ratios. The coordinated energy transfer between inductors and capacitors enables improved conversion efficiency, reduced conduction losses, and enhanced voltage gain. Volt- second balance formulation and capacitor charge analysis provide closed-form expressions for voltage gain, device stresses, and component sizing. The performance of the converter is validated through MATLAB/Simulink simulations, confirming the analytical predictions. Owing to its high step-up capability and improved efficiency, the proposed design is well-suited for renewable interfaces, electric mobility subsystems, and distributed DC microgrid applications. Results are obtained by simulating the converter in MATLAB/Simulink R2024a. The simulation results show that the proposed high-gain converter delivers high voltage gain with reduced voltage stress across the switching devices and achieves a maximum operating efficiency of 76%. A hardware with an input voltage of 5V is implemented using the TMS320F28335 microcontroller where output voltage of 22.8V is achieved, corresponding to a voltage gain of 4.54. Additionally, a secondary output voltage of 15.8V is obtained under the same input conditions, corresponding to a voltage gain of 3.17, thereby experimentally validating the multi-output capability of the proposed converter.