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Unified model of PWM switch including inductor in DCM

Unified model of PWM switch including inductor in DCM

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The conventional small-signal circuit model in the discontinuous conduction mode (DCM) shows large discrepancies at high frequencies. A new unified small-signal circuit model of the pulsewidth modulation (PWM) switch including inductor in the DCM is proposed to overcome the inaccuracy of the conventional small-signal circuit model.

Inspec keywords: inductors; pulse width modulation; switching circuits

Other keywords: inductor; DCM; small-signal circuit model; PWM switch; discontinuous conduction mode

Subjects: Inductors and transformers; Power convertors and power supplies to apparatus

References

    1. 1)
      • V. Vorpérian . Simplified analysis of PWM converters using model of PWM switch, PartII:Discontinuous conduction mode. IEEE Trans. Aerosp. Electron. Syst. , 3 , 497 - 505
    2. 2)
      • Sun, J., Mitchell, D., Greuel, M., Krein, P., Bass, R.: `Modeling of PWMconverters in discontinuous conduction mode - A reexamination', IEEE Power Electron Spec. Conf. Rec., 1998, p. 615–622.
    3. 3)
      • S.S. Hong , B.R. Jo , M.J. Youn . Duty cycle generator for average model of buckconverter with current-mode control - using analog behavioral modeling of PSPICE. IEEE Trans. Power Electron. , 6 , 785 - 795
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