Analysis and Design of Dynamic Buck Converter with Change in Value of Load Impedance

Abstract

DC-DC Converter is a tool that is able to use for changing value of DC voltage to another value. DC-DC Converter commonly used in electronic system, for instance Personal Computer, telecommunication system, driver motor DC, and also used as charge controller for battery. This equipment is able to replace voltage regulator which has so much power dissipation. DC-DC converter has some of types; those are Buck Converter, Boost Converter, and Buck-Boost Converter. Each type of DC-DC Converter has their respective functions.Buck Converter is useful as step down of the voltage value, so the output voltage will be decreased. DC-DC Converter of this type commonly used when the supply voltage from the source is too much for an electronic system as when the charging battery by solar panel, by using Buck Converter when supply voltage from solar panel exceed battery voltage charging then the voltage can be dropped to the value of battery charging. Therefore, battery lifetime can be safe, and also other electronic devices which use Buck Converter.Buck converter has some primary components in its implementation, that is, MOSFET as fast as electronic switching, diode, inductor, and capacitor. To acquire, the optimal result should be noted the proper component selection. In this research, the writer tried to select inductance value of inductor and capacitance value of capacitor by simulating on MULTISIM, in order to get output as well as theoretical calculation and analyze the transient-state and the steady-state of the Buck Converter output. On the other hand, this research was conducted several variations of load for selected inductor and capacitor.