• DocumentCode
    1904628
  • Title

    A noise-shaped buck DC-DC converter based on a 3rd-order continuous-time active-passive sigma-delta modulator

  • Author

    Yan, Wei ; Li, Wenhong ; Liu, Ran

  • Author_Institution
    Dept. of Microelectron., Fudan Univ., Shanghai, China
  • fYear
    2010
  • fDate
    28-30 June 2010
  • Firstpage
    1
  • Lastpage
    5
  • Abstract
    A noise-shaped synchronous buck converter using a 3rd-order continuous-time (CT) active-passive sigma-delta modulator (SDM) is presented. Detailed system modeling and loop design methodology for the SDM based DC-DC are discussed. The proposed circuit has been designed with Chartered 0.35 μm CMOS process. The system operates with a clock of 8 MHz. Compared with the traditional PWM mode converter, simulation results show that the proposed converter suppresses the switching tones by more than 25 dB over a wide frequency range with a peak efficiency of 96%.
  • Keywords
    CMOS integrated circuits; DC-DC power convertors; sigma-delta modulation; CMOS process; PWM mode converter; continuous-time active-passive sigma-delta modulator; frequency 8 MHz; noise-shaped buck DC-DC converter; Clocks; Converters; Frequency modulation; Pulse width modulation; Switches; Transfer functions; DC-DC; active-passive; buck converter; continuous-time; sigma-delta;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Control and Modeling for Power Electronics (COMPEL), 2010 IEEE 12th Workshop on
  • Conference_Location
    Boulder, CO
  • Print_ISBN
    978-1-4244-7462-2
  • Electronic_ISBN
    978-1-4244-7461-5
  • Type

    conf

  • DOI
    10.1109/COMPEL.2010.5562376
  • Filename
    5562376
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1904628