This paper presents a novel method for optimal selection of passive components of current controlled SEPIC dc-dc switching regulators, aimed at preventing converterpsilas current loop instability. The source of current loop instability is a couple of complex right half plane zeros of open loop duty-to-output transfer function. The stability is achieved by identifying real inductors and capacitors whose parameters ensure the presence of one right half plane zero only in the duty-to-output transfer function. A design example is discussed, which illustrates how to ensure stable SEPIC operation by means of the proposed design method.

A novel design method to prevent SEPIC’s instability

DE NARDO, ANTONIETTA;FEMIA, Nicola;
2008

Abstract

This paper presents a novel method for optimal selection of passive components of current controlled SEPIC dc-dc switching regulators, aimed at preventing converterpsilas current loop instability. The source of current loop instability is a couple of complex right half plane zeros of open loop duty-to-output transfer function. The stability is achieved by identifying real inductors and capacitors whose parameters ensure the presence of one right half plane zero only in the duty-to-output transfer function. A design example is discussed, which illustrates how to ensure stable SEPIC operation by means of the proposed design method.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11386/2280457
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