• DocumentCode
    1698862
  • Title

    Design considerations of time constant mismatch problem for inductor DCR current sensing method

  • Author

    Hua, Lei ; Luo, Shiguo

  • Author_Institution
    Semtech Corp., Camarillo, CA
  • fYear
    2006
  • Abstract
    This paper identifies advantages and disadvantages of several commonly used current sensing methods such as dedicated sense resistor sensing, MOSFET RDS(ON) current sensing, and inductor DC resistance (DCR) current sensing. Among these current sense methods, inductor DCR current sense will become dominant one in the future. The mismatching issue between the time constant made by the current sensing RC network and the one formed with output inductor and its DC resistance is addressed. A small signal model of a buck converter using inductor DCR current sensing with mismatched time constants is presented, and the modeling has been verified experimentally
  • Keywords
    MOSFET; electric sensing devices; inductors; power convertors; MOSFET; RC network; buck converter; current sensing; inductor DCR; resistor sensing; signal model; time constant mismatch; Buck converters; Capacitors; Inductors; MOSFET circuits; Paramagnetic resonance; Power MOSFET; Power supplies; Resistors; Temperature sensors; Voltage;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Applied Power Electronics Conference and Exposition, 2006. APEC '06. Twenty-First Annual IEEE
  • Conference_Location
    Dallas, TX
  • Print_ISBN
    0-7803-9547-6
  • Type

    conf

  • DOI
    10.1109/APEC.2006.1620717
  • Filename
    1620717
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1698862