Single Inductor Dual Output Buck Converter for Low Power Applications and Its Stability Analysis

Sowmya, S; Vinod, Kulkarni Chaitali; Sreekumar, Aswanth; Laxminidhi, Tonse; Singhal, Vipul; Chauhan, Rajat

doi:10.1109/vlsid.2018.88

Cited by 2 publications

(1 citation statement)

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“…Buck converters, also known as step-down converters, are widely used in applications where a regulated voltage needs to be obtained from a higher voltage source. Examples of such applications are industrial applications [1,2], like motor drives or factory automation [3,4], telecommunications [5], solar power systems [6], automotive [7], and voltage regulators [8][9][10][11][12]. This ability to reduce the voltage level is essential in many electronic devices, and in the literature, different topologies, starting with the classical step-down buck converter [13], other types of non-isolated [14,15] converters or isolated step-down converters [16][17][18] can be found.…”

Section: Introductionmentioning

confidence: 99%

Fourth-Order Quadratic Buck Converter Controller Design

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2024

Sensors

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This paper aims to outline the process of dimensioning a controller tailored for a fourth-order step-down converter. In order to conduct a thorough small-signal analysis, it is imperative to find the state–space model in matrices form. Given its fourth-order nature, the control-to-output transfer function also aligns with this order, although its degree is ultimately reduced to a second-order using the tfest function. It is remarkable that the design of the type III error amplifier assumes a central position in the overall controller design process. The theoretical analysis was then subjected to rigorous validation via simulation, with particular attention paid to the step response in both input voltage and output resistance. This study developed from the desire to validate the efficacy of reducing the control-to-output transfer function degree using the tfest function, aiming to highlight a fourth-order converter to which controller design theory can be applied, related to that for a second-order converter.

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