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Dc-dc Buck converter has a major application for powering integrated circuit under stringent regulation, nowadays. In this paper, a practical digital control algorithm is presented to achieve the optimal response for dc-dc Buck converters without relying on the knowledge of the passive component value (inductance and capacitance). This algorithm introduces the curve fitting analysis for deriving the...
In order to adhere to voltage regulation criteria, capacitor selection of a Buck converter must be based on the worst possible scenario. It is well known that, for a low duty cycle Buck converter, the output voltage deviation of a Buck converter undergoing an unloading transient will be significantly larger than that of a corresponding loading transient of equal magnitude. Therefore, in this paper,...
In this paper, Parallel Current Mode Control method for Boost DC-DC converter is proposed. The parallel current mode control strategy is composed of two parallel terms: one is voltage term, the other is current term. They are calculated based on the input voltage, reference output voltage, inductor current and reference inductor current. The Parallel Current Mode Control method essentially distinguishes...
In this paper, a large signal model for isolated DC-DC converters is proposed. The model is applicable to both current and voltage mode control. The model has the principle advantage that it is simple to derive-it takes the same form as the switching converter that it is derived from. In the model, the MOSFET switches are replaced by dependent current and voltage sources equal to the average current...
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