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Digital linear slope control method for improving the load transient response of a buck converter

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Abstract

Digital linear slope control (LSC) method is proposed to reduce the output voltage deviation during the load transient of a buck converter. The proposed LSC method modulates the slope of the control signal to suppress the output voltage deviation. The LSC method utilizes the information of the output voltage only and is realized simply by adding a few lines to the digital code of the conventional VMC. The mathematical analysis is conducted to prove the feasibility of the LSC method and the algorithms for the LSC method are presented. A 15 V–5 V 100-kHz prototype buck converter was built and tested to verify the performance of the LSC method.

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Data that support the findings of the study are available from the first and corresponding authors, upon reasonable request.

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Acknowledgements

This research was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT under Grants 2021M1A2A2060313 and 2022R1C1C1010027, and Chung-Ang University Graduate Research Scholarship in 2021.

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Authors and Affiliations

  1. Department of Smart Cities, Chung-Ang University, Seoul, Republic of Korea

    Seokwon Kim, Jongun Baek, Junho Shin, Hanhim Sung & Sujeong Lee

  2. School of Energy System Engineering, Chung-Ang University, Seoul, Republic of Korea

    Seunguk Yong & Jong-Won Shin

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  1. Seokwon Kim
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  2. Jongun Baek
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  3. Junho Shin
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  4. Hanhim Sung
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  5. Sujeong Lee
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  6. Seunguk Yong
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  7. Jong-Won Shin
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Correspondence to Jong-Won Shin.

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Kim, S., Baek, J., Shin, J. et al. Digital linear slope control method for improving the load transient response of a buck converter. J. Power Electron. 23, 400–409 (2023). https://doi.org/10.1007/s43236-023-00593-4

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  • DOI: https://doi.org/10.1007/s43236-023-00593-4

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