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<p>This paper compares the SEPIC-Cuk converter and the dual-output-polarities (DOP) converter, focusing on optimized design parameters and fewer components. It introduces the DOP converter as a novel design with practical uses in industrial power supplies. The SEPIC-Cuk converter uses more components, which is a key drawback. The DOP converter, with fewer components, is analyzed in detail, including its operation, steady-state behavior, and design parameters. The optimization process improves the critical parameters for both converters by reducing the voltage ripple in the input capacitor. Experimental results show that the DOP converter effectively eliminates spikes. In contrast to the SEPIC-Cuk converter, the spikes on the SEPIC side were reduced from 75 to 15&#xa0;V and on the Cuk side from 25 to 10&#xa0;V. After optimization, the efficiency of the SEPIC-Cuk converter increased from 82.6 to 84.06%, while the efficiency of the DOP converter improved from 85.31 to 87.71%. The DOP converter achieves, step-down (± 12&#xa0;V, <i>η</i> = 67.28%), unity gain (± 24&#xa0;V, <i>η</i> = 77.04%), and step-up (± 48&#xa0;V, <i>η</i> = 87.71%) operations. The designed parameters of the experimental converter were validated by 150 W of output power.</p>

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SEPIC-Cuk converter and dual-output-polarities (DOP) converter comparisons based on optimization parameter design and component number reduction

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月15日

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  • Mohamad Kamil Romai Noor,
  • Asmarashid Ponniran,
  • Afarulrazi Abu Bakar,
  • Mohd Amirul Naim Kasiran,
  • Mohd Hafizie Yatim

摘要

This paper compares the SEPIC-Cuk converter and the dual-output-polarities (DOP) converter, focusing on optimized design parameters and fewer components. It introduces the DOP converter as a novel design with practical uses in industrial power supplies. The SEPIC-Cuk converter uses more components, which is a key drawback. The DOP converter, with fewer components, is analyzed in detail, including its operation, steady-state behavior, and design parameters. The optimization process improves the critical parameters for both converters by reducing the voltage ripple in the input capacitor. Experimental results show that the DOP converter effectively eliminates spikes. In contrast to the SEPIC-Cuk converter, the spikes on the SEPIC side were reduced from 75 to 15 V and on the Cuk side from 25 to 10 V. After optimization, the efficiency of the SEPIC-Cuk converter increased from 82.6 to 84.06%, while the efficiency of the DOP converter improved from 85.31 to 87.71%. The DOP converter achieves, step-down (± 12 V, η = 67.28%), unity gain (± 24 V, η = 77.04%), and step-up (± 48 V, η = 87.71%) operations. The designed parameters of the experimental converter were validated by 150 W of output power.