Two-stage switched-capacitor dc-dc buck converter

In this work, we propose to analyze and implement a two-stage switched-capacitor dc-dc converter design. The proposed converter topology comprises a half-step-down converter, modeled by average state-space approach and associated with the traditional Buck converter to obtain a large-voltage-gain, eliminating the high-frequency transformer, hence reducing its dimensions, making it compact and lightweight. The proposed topology is evaluated through SPICE simulation program and it will be compared with a single-stage Buck converter designed according the K-factor approach. The results of both converters will be compared in order to evaluate the proposed converter performance and its contribution in improving efficiency.