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Modelling of Variable Frequency Synchronous Buck Converter

TLDR
Novel small-signal averaged models for dc–dc converter operating at variable switching frequency are derived by separately considering the on-time and the off-time of the switching period.
Abstract
In this paper, novel small-signal averaged models for dc–dc converter operating at variable switching frequency are derived. This is achieved by separately considering the on-time and the off-time of the switching period. The derivation is shown in detail for a synchronous buck converter. The Enhanced Small Signal (ESSA) Model is derived for the synchronous buck converter. The equivalent series inductance (ESL) is also considered in this modelling. The buck converter model is also simulated in MATLAB and the result is also presented.

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Citations
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Thermal Behavior of an Integrated Square Spiral Micro Coil

TL;DR: In this paper, the thermal behavior of a square micro coil that will be integrated in a DC-DC micro converter is studied and a mathematical expression giving the evolution of temperatures in an integrated micro coil using the separation of variables method is determined in 2D and 3D space dimension using the finite element method.
Proceedings ArticleDOI

Steady state symbolic analysis of buck converter using fourier series

TL;DR: A steady state analysis of buck converter is proposed which allows the exact calculation of steady state response and gives consistent result with steady state of simulation including the non-linear ripple.

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References
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Book

Fundamentals of Power Electronics

TL;DR: Converters in Equilibrium, Steady-State Equivalent Circuit Modeling, Losses, and Efficiency, and Power and Harmonics in Nonsinusoidal Systems.
Journal ArticleDOI

Generalized averaging method for power conversion circuits

TL;DR: In this paper, a more general averaging procedure that encompasses state-space averaging and that is potentially applicable to a much broader class of circuits and systems is presented, including resonant type converters.
Journal ArticleDOI

Quantization resolution and limit cycling in digitally controlled PWM converters

TL;DR: In this paper, the presence of steady-state limit cycles in digitally controlled PWM converters is discussed, and conditions on the control law and quantization resolution for their elimination are suggested.
Journal ArticleDOI

Averaged modeling of PWM converters operating in discontinuous conduction mode

TL;DR: In this article, a duty ratio constraint that defines the diode conduction interval is identified to be the key to accurate prediction of high-frequency behavior of hard-switching pulse-width modulated (PWM) converters.
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