SEMICONDUCTOR INTEGRATED CIRCUITS

A multi-mode low ripple charge pump with active regulation

Ye Qiang, Lai Xinquan, Xu Luping, Wang Hui, Zeng Huali and Chen Fuji

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Abstract: In order to improve efficiency and reduce the output ripple, a novel multi-mode charge pump is presented. The proposed charge pump includes dual-loop regulation topology-skip and linear modes. It consumes low quiescent current in skip mode for light loads, and produces low ripple in linear mode for heavy loads, which closes the gap between linear mode and skip mode with active regulation; a multi-mode charge pump employing the technique has been implemented in the UMC 0.6- m-BCD process. The results indicate that the charge pump works well and effectively; it has low ripple with special regulation, and minimizes the size of the capacitance, then decreases the area of the PCB board. The adjustable output of the positive charge pump is 10–30 V, and the maximum output ripple is 100 mV when the load current is 200 mA. The line regulation is 0.2%/V, and load regulation is 0.075%.

Key words: charge pump

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    Received: 18 August 2015 Revised: 24 August 2009 Online: Published: 01 December 2009

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      Ye Qiang, Lai Xinquan, Xu Luping, Wang Hui, Zeng Huali, Chen Fuji. A multi-mode low ripple charge pump with active regulation[J]. Journal of Semiconductors, 2009, 30(12): 125006. doi: 10.1088/1674-4926/30/12/125006 Ye Q, Lai X Q, Xu L P, Wang H, Zeng H L, Chen F J. A multi-mode low ripple charge pump with active regulation[J]. J. Semicond., 2009, 30(12): 125006. doi: 10.1088/1674-4926/30/12/125006.Export: BibTex EndNote
      Citation:
      Ye Qiang, Lai Xinquan, Xu Luping, Wang Hui, Zeng Huali, Chen Fuji. A multi-mode low ripple charge pump with active regulation[J]. Journal of Semiconductors, 2009, 30(12): 125006. doi: 10.1088/1674-4926/30/12/125006

      Ye Q, Lai X Q, Xu L P, Wang H, Zeng H L, Chen F J. A multi-mode low ripple charge pump with active regulation[J]. J. Semicond., 2009, 30(12): 125006. doi: 10.1088/1674-4926/30/12/125006.
      Export: BibTex EndNote

      A multi-mode low ripple charge pump with active regulation

      doi: 10.1088/1674-4926/30/12/125006
      • Received Date: 2015-08-18
      • Accepted Date: 2009-05-26
      • Revised Date: 2009-08-24
      • Published Date: 2009-12-04

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