A continuous conduction mode low-ripple high-efficiency charge-pump boost converter

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• 作者：Yuh-Shyan Hwang (1)
  An Liu (1)
  Chia-Hsuan Chen (1)
  Yi-Tsen Ku (1)
  Jiann-Jong Chen (1)
  Cheng-Chieh Yu (1)
  
• 关键词：Charge pump regulator ; Boost ; Continuous conduction mode (CCM) ; DC–DC converter
• 刊名：Analog Integrated Circuits and Signal Processing
• 出版年：2014
• 出版时间：May 2014
• 年：2014
• 卷：79
• 期：2
• 页码：355-369
• 全文大小：2,619 KB
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• 作者单位：Yuh-Shyan Hwang (1)
  An Liu (1)
  Chia-Hsuan Chen (1)
  Yi-Tsen Ku (1)
  Jiann-Jong Chen (1)
  Cheng-Chieh Yu (1)
  
  1. Department of Electronic Engineering, National Taipei University of Technology, Taipei, 10608, Taiwan
  
• ISSN：1573-1979

文摘

In this paper, a new continuous conduction mode (CCM) low-ripple high-efficiency charge-pump boost converter is presented. Its components include a double voltage charge pump and a low pass LC filter. The voltage boost ratio of the positive low-ripple output voltage of the proposed converter is (1?+?D) where D is the duty cycle of the control switching signal waveform. Since the energy storage inductor is connected to the power source and the load at all times, the proposed converter always operates in CCM, the transient responses are fast, and the current stress on the output capacitor is reduced and the output voltage ripple is small. In this paper, the operation principles of the CCM low-ripple high-efficiency charge-pump boost converter are described in detail. Its circuitry is designed and implemented with a TSMC 0.35?μm CMOS processes whose operation frequency is 1?MHz. The circuitry is simple and the power conversion efficiency is up to 90.95?%, and the transient response is only 7?μs.