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Sensorless Boost DC-DC Converter Based on Gate Driver-side Current Detection
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Zifan LI  Student Member, CPSS1, Huabing LI2, Meng HUANG  Member, CPSS1, Ying XU3, Mingshuo ZHU  Student Member, CPSS1, Yi LIU  Member, CPSS1
Journal of Power Supply | 2025, 23(4) : 17 - 25
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Journal of Power Supply | 2025, 23(4): 17-25
• DC-DC Converters •
Sensorless Boost DC-DC Converter Based on Gate Driver-side Current Detection
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Zifan LI  Student Member, CPSS1, Huabing LI2, Meng HUANG  Member, CPSS1, Ying XU3, Mingshuo ZHU  Student Member, CPSS1, Yi LIU  Member, CPSS1
Affiliations
  • 1.Hubei Key Laboratory of Power Equipment & System Security for Integrated Energy, Wuhan University, Wuhan 430072, China
  • 2.UHVDC Center, State Grid Sichuan Electric Power Company, Chengdu 610072, China
  • 3.State Grid Economic and Technological Research Institute Co., Ltd., Beijing 102200, China
Published: 2025-07-30 doi: 10.13234/j.issn.2095-2805.2025.4.17
Outline
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The current inner loop of a peak current controlled Boost DC-DC converter needs to detect the IGBT collector current. However, the existing current detection methods need to connect the components to the main circuit of IGBT, which increases the circuit volume and cost and reduces the efficiency of the main circuit. Based on the IGBT smart driver technology with a collector current detection function, a peak current controlled Boost DC-DC converter without current sensors is proposed. First, a smart drive design is given. Based on the relationship between collector current and gate current during the Miller plateau, a three-point method is used to determine the relationship between collector current and gate current during the Miller plateau of the IGBT device, and the collector current is detected by detecting the gate current. Second, a small signal model of leading edge modulated Boost DC-DC converter considering the effects of sample and hold, quantization error and delay is established, and the stability of the converter is analyzed. Finally, a sensorless Boost DC-DC converter prototype based on current detection on the driver side was built, and the effects of current detection and stability control were verified by experimental results.

Peak current control  /  Boost DC-DC converter  /  IGBT  /  smart drive  /  Miller plateau
李梓帆中国电源学会学生会员, 李华兵, 黄萌中国电源学会会员, 徐莹, 朱明硕中国电源学会学生会员, 刘懿中国电源学会会员. 基于驱动侧电流检测的无传感器Boost DC-DC变换器. 电源学报, 2025 , 23 (4) : 17 -25 . DOI: 10.13234/j.issn.2095-2805.2025.4.17
Zifan LI, Huabing LI, Meng HUANG, Ying XU, Mingshuo ZHU, Yi LIU. Sensorless Boost DC-DC Converter Based on Gate Driver-side Current Detection[J]. Journal of Power Supply, 2025 , 23 (4) : 17 -25 . DOI: 10.13234/j.issn.2095-2805.2025.4.17
Funding
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  • Science and Technology Project of State Grid Sichuan Electric Power Company(52196222004)
Appendix
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Year 2025 volume 23 Issue 4
51
14
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Article Info
doi: 10.13234/j.issn.2095-2805.2025.4.17
  • Receive Date：2023-06-06
  • Online Date：2026-10-26
  • Published：2025-07-30
Article Data
Affiliations
History
  • Received：2023-06-06
  • Revised：2023-08-16
  • Accepted：2023-09-22
Funding
Science and Technology Project of State Grid Sichuan Electric Power Company(52196222004)
Affiliations
    1.Hubei Key Laboratory of Power Equipment & System Security for Integrated Energy, Wuhan University, Wuhan 430072, China
    2.UHVDC Center, State Grid Sichuan Electric Power Company, Chengdu 610072, China
    3.State Grid Economic and Technological Research Institute Co., Ltd., Beijing 102200, China
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