Abstract
The object of study is synchronous buck-voltage converter with digital control system. One of the most problematic things is energy changing and transmission in converters to reach certain numerical range with minimal losses in the components of the electrical circuit. An enormous calculated parameters of electrical scheme. There was advised and described both structure and electrical scheme of synchronous converter, which, thanks to digital system, provides dates with more accuracy connected with an impact on working scheme. There was shown detailed analysis example with a numerical value for the certain elements of electrical scheme. It’s a fundament in order to choose certain parts of electrical scheme according to the certain categories.During research there was used selection of hardware and software tools: elements for buck-converter – key, diode and capacitor; certain voltage and frequency range for microcontroller; control of the power keys of the circuit with the corresponding operating parameters for driver. There was analyzed and calculated all over the possible losses during the process bucking of the voltage to the certain level, an enormous losses in the components of the converter electrical scheme – induction coil, keys and capacitors. It’s an important part of synchronous buck-converter. There was calculated power losses and efficiency through the received graphics of keys commutation in electrical scheme. There were received graphic dependence of converter efficiency on output power; time characteristics of the control signal pulse-width modulation (PWM) and output voltage; dependence on the commutation losses. This is because advised synchronous converter has a set of features. Particularly analog to digital converter in the capacity of feedback, digital regulation system with a discrete step and rectification by replacing diodes with actively controlled switches. There are keys of low-side and high-side levels according to the passing voltage and current values. Therewith provides possibility for receiving more accuracy value. In comparison with analogic buck-converters, this converter has voltage parameter with fractional error.
Highlights
Nowadays energy efficient projects are becoming more popular
The aim of the article is the researching of the scheme and developing the foundations for construction in order to reach high efficiency level of buck converter
The principles of technical implementation of a semiconductor buck voltage converter with a synchronous type of rectification, which can be used in wireless chargers, have been developed
Summary
Nowadays energy efficient projects are becoming more popular. An enormous converter, which can be used in photovoltaic power generation systems, renewable energy systems and a number of other systems. Modern aircraft use a lot of radio equipment for communication systems, navigation, landing, meteorological, avoiding the collision of aircrafts. The weight and volume of this equipment must be reduced. The traditional construction scheme uses one powerful transmitter and a number of switched antennas or antenna array. There is a constant integration of equipment in the direction of combining several systems within a single functional unit [1]. The weight and dimensions are reduced, but additional requirements are imposed on the element base
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