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Systematic circuit design and analysis of a non-ideal DC-DC pulse width modulation boost converter

This study presents systematic design and detailed circuit analysis of a non-ideal DC-DC pulse width modulation boost converter. An accurate mathematical formula is thrived to evaluate the duty cycle, which enables the converter to neutralise the voltage drop across the parasitic elements. Furthermore, the modified relationships for the design of inductor have been obtained, which satisfy the requirements of stipulated inductor current ripples in the presence of parasitics. Moreover, the mathematical relation is developed to design the output capacitor, which is more accurate than the conventionally derived expression. In addition to this, the output capacitor's equivalent series resistance effect on the output voltage ripples is also investigated. Finally, the experimental and simulation results are used to validate the theoretical analysis.