Mechanism Analysis and Closed Loop Simulation of Two-phase Interleaved BUCK Converter

[摘要] Interleaved Buck converters can increase power level and improve converter efficiency under the same stress conditions. Based on the two-phase interleaved buck converter model, several working conditions are analyzed in detail. The current ripple is deduced by the current-voltage relationship. Then the loss model is established to calculate and compared the efficiency of the the single phase and two intersecting converter. Finally, the closed-loop simulation analysis is carried out by MATLAB. The experimental results show that the converter combined with the double closed loop algorithm reduces the ripple current and improves the robustness of the system.

[发布机构] College of Electrical and Information Engineering, Hubei University of Automotive Technology, Shiyan; 442002, China^1

[效力级别] 无线电电子学

[关键词] Closed-loop simulations;Converter efficiency;Current ripples;Current-voltage relationship;Double closed loop;Interleaved buck converters;Mechanism analysis;Stress condition