1-MHz High-Step-Up Converter with Switched Inductors Based on Optimized Integrated Magnetics

Shanshan Gao; Xikun Sang; Yijie Wang; Houkun Song; Dianguo Xu; J. Marcos Alonso

doi:10.17775/CSEEJPES.2022.04480

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1-MHz High-Step-Up Converter with Switched Inductors Based on Optimized Integrated Magnetics

Regular Papers | 更新时间：2026-06-12

- 1-MHz High-Step-Up Converter with Switched Inductors Based on Optimized Integrated Magnetics
- CSEE Journal of Power and Energy Systems Vol. 12, Issue 3, Pages: 1587-1597(2026)
- 作者机构：
  
  1. School of Electrical Engineering and Automation, Harbin Institute of Technology,Harbin,China
  2. Department of Electrical Engineering, University of Oviedo,Spain
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2022.04480
  CLC：
- Published：2026
- 稿件说明：
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Shanshan Gao, Xikun Sang, Yijie Wang, et al. 1-MHz High-Step-Up Converter with Switched Inductors Based on Optimized Integrated Magnetics[J]. CSEE Journal of Power and Energy Systems, 2026, 12(3): 1587-1597.
DOI：

Shanshan Gao, Xikun Sang, Yijie Wang, et al. 1-MHz High-Step-Up Converter with Switched Inductors Based on Optimized Integrated Magnetics[J]. CSEE Journal of Power and Energy Systems, 2026, 12(3): 1587-1597. DOI： 10.17775/CSEEJPES.2022.04480.

摘要

Abstract

A 1-MHz single-switch high-step-up converter with switched inductors is proposed

suitable for high-voltage applications. On the basis of a conventional single-ended primary inductor converter (SEPIC)

a switched inductor cell with a pump capacitor and a voltage multiplier unit is added to achieve high voltage gain. The proposed converter works in discontinuous conduction mode (DCM) to realize soft switching. In addition

the switch adopts wide-bandgap semiconductor gallium nitride (GaN) to obtain better high-frequency performance. To further increase efficiency

magnetic integration technology is used to achieve structural integration of the three inductors. An optimized scheme based on a commercial core is determined according to simulation and calculation results. Operational principles and parameter design process are introduced in detail in this paper. A 1-MHz

200-W prototype operating in DCM with a voltage gain exceeding 13 times has been designed to verify the theoretical analysis. Measured efficiency reaches up to 94.3% at full load.

关键词

Keywords

references

1. IEA. ( 2020 ). World energy outlook 2020 . IEA, Paris. [Online ] . Available: https://www.iea.org/reports/world-energy-outlook-2020.

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