Permanent Magnet Brushless DC Motor (PMBLDC) is one of the best electrical drives that has increasing popularity, due to their high efficiency, reliability, good dynamic response and very low maintenance. This makes the interest of modeling an ideal PMBLDC motor and it’s associated Drive System in simple and lucid manner. In this paper the drive system is proposed with a buck converter topology...

A CMOS Current-mode DC-DC converter using a quadratic slope compensation scheme is presented. The use of a quadratic slope instead of a conventional linear slope makes a damping factor and a frequency bandwidth of a current feedback loop independent of the converter’s output voltage. Further designing the coefficient of the quadratic slope to be fully dependent of the input voltage, the damping...

In this paper, a comparative analysis on the bifurcative and chaotic behaviour of a current controlled buckboost converter with soft switching and hard switching is performed. The electromagnetic interference generated during hard switching and soft switching of the converter is analyzed. Simulation and measured results show that the total energy is more evenly spread over the frequency band du...

This paper introduces a digitally performed current mode and voltage control for the dc-dc step down converter based on voltage to frequency converter where the average values of inductor current and output voltage are obtained. These current and voltage measurement are realized by the voltage control oscillator (VCO) and counters (digital integrator). Such an approach enables full digitalizati...

This chapter deals with the design methodologies to obtain DC-DC converters with multiple outputs and only one inductor. The four possible schemes, buck, boost, and inverting or noninverting buck-boost, are considered. The key specific problems related to the issue are the inductor current switching scheme, the multiple-loops control, the suitable driving of power switches and, accordingly, the...

Passivity{based feedback controllers are derived for the indirect stabilization of the average output voltage in Pulse{Width{Modulation (PWM) controlled dc{to{dc power converters of the \boost", \buck{boost" and \buck" types. The controller design is carried out on the basis of well known average PWM models of such circuits. These models are shown to be Euler{Lagrange systems corresponding to a...

The objective of this paper is to implement a two-phase, interleaved, bidirectional DC/DC converter topology with an improved voltage conversion ratio for electric vehicle (EV) and DC-microgrid systems. In this study, a two-phase interleaved charge-pump topology is introduced to achieve a high voltage conversion ratio with very simple control circuits. In discharge mode, the circuit topology ac...

A Fuzzy controlled DC-DC buck converters which maintains the load for various load and line conditions is presented in this paper. Processors exhibit variation in load current dynamically from few mA to Amps during operation. In this paper efficiency optimization is carried out for light and heavy load scenarios for variations in supply by varying the duty cycle of switching device. The primary...

We present in this paper a study on the thermal behavior of a square micro coil that will be integrated in a DC-DC micro converter. The first, we calculate the value of inductance. The second, we descript our micro coil; dimensioning, electrical model, and formula of loss. A buck micro converter schematic simulation coupled with ideal and integrated micro coil was presented. This conceptual mod...

The design and characterization process of a package-embedded spiral inductor is investigated in this paper via comprehensive electromagnetic simulations. A realistic, multi-layer flip-chip package is considered and modeled in a commercial, full wave electromagnetic simulator. At constant package area, parasitic resistance of a given inductance is minimized. The applicability of the proposed pa...