J. Semicond. > 2010, Volume 31 > Issue 8 > 085003

SEMICONDUCTOR INTEGRATED CIRCUITS

DCM, FSM, dead time and width controllers for a high frequency high efficiency buck DC–DC converter over a wide load range

Pi Changming, Yan Wei, Zhang Ke and Li Wenhong

+ Author Affiliations
DOI: 10.1088/1674-4926/31/8/085003

PDF

Abstract: This paper presents a width controller, a dead time controller, a discontinuous current mode (DCM) controller and a frequency skipping modulation (FSM) controller for a high frequency high efficiency buck DC–DC converter. To improve the efficiency over a wide load range, especially at high switching frequency, the dead time controller and width controller are applied to enhance the high load efficiency, while the DCM controller and FSM controller are proposed to increase the light load efficiency. The proposed DC–DC converter controllers have been designed and fabricated in the Chartered 0.35 μ m CMOS process, and the measured results show that the efficiency of the buck DC–DC converter is above 80% over a wide load current range from 8 to 570 mA, and the peak efficiency is 86% at 10 MHz switching frequency.

Key words: buck DC–DC converterdead time controllerdiscontinuous current modewidth controllerfrequency skipping modulation

  • Search

    Advanced Search >>

    GET CITATION

    shu

    Export: BibTex EndNote

    Article Metrics

    Article views: 4164 Times PDF downloads: 2717 Times Cited by: 0 Times

    History

    Received: 18 August 2015 Revised: 05 April 2010 Online: Published: 01 August 2010

    Catalog

      Email This Article

      User name:
      Email:*请输入正确邮箱
      Code:*验证码错误
      Pi Changming, Yan Wei, Zhang Ke, Li Wenhong. DCM, FSM, dead time and width controllers for a high frequency high efficiency buck DC–DC converter over a wide load range[J]. Journal of Semiconductors, 2010, 31(8): 085003. doi: 10.1088/1674-4926/31/8/085003 ****Pi C M, Yan W, Zhang K, Li W H. DCM, FSM, dead time and width controllers for a high frequency high efficiency buck DC–DC converter over a wide load range[J]. J. Semicond., 2010, 31(8): 085003. doi: 10.1088/1674-4926/31/8/085003.
      Citation:
      Pi Changming, Yan Wei, Zhang Ke, Li Wenhong. DCM, FSM, dead time and width controllers for a high frequency high efficiency buck DC–DC converter over a wide load range[J]. Journal of Semiconductors, 2010, 31(8): 085003. doi: 10.1088/1674-4926/31/8/085003 ****
      Pi C M, Yan W, Zhang K, Li W H. DCM, FSM, dead time and width controllers for a high frequency high efficiency buck DC–DC converter over a wide load range[J]. J. Semicond., 2010, 31(8): 085003. doi: 10.1088/1674-4926/31/8/085003.

      DCM, FSM, dead time and width controllers for a high frequency high efficiency buck DC–DC converter over a wide load range

      DOI: 10.1088/1674-4926/31/8/085003
      • Received Date: 2015-08-18
      • Accepted Date: 2010-02-28
      • Revised Date: 2010-04-05
      • Published Date: 2010-07-31

      Catalog

        /

        DownLoad:  Full-Size Img  PowerPoint
        Return
        Return