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Optimization of Charge Pump Based on Piecewise Modeling of Output-Voltage Ripple

Author

Listed:
  • Yajun Lin

    (Department of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong)

  • Jianxin Yang

    (School of Microelectronics, South China University of Technology, Guang Zhou 510000, China)

  • Tin-Wai Mui

    (Department of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong)

  • Yong Zhou

    (Department of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong)

  • Ka-Nang Leung

    (Department of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong)

Abstract

This work proposes a piecewise modeling of output-voltage ripple for linear charge pumps. The proposed modeling can obtain a more accurate design expression of power-conversion efficiency. The relationship between flying and output capacitance, as well as switching frequency and optimize power-conversion efficiency can be calculated. The proposed modeling is applied to three charge-pump circuits: 1-stage linear charge pump, dual-branch 1-stage linear charge pump and 4× cross-coupled charge pump. Circuit-level simulation is used to verify the accuracy of proposed modeling.

Suggested Citation

  • Yajun Lin & Jianxin Yang & Tin-Wai Mui & Yong Zhou & Ka-Nang Leung, 2021. "Optimization of Charge Pump Based on Piecewise Modeling of Output-Voltage Ripple," Energies, MDPI, vol. 14(16), pages 1-14, August.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:16:p:4809-:d:610017
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