Buck converter simulation and measurement

Abstract

For thermal evaporation of metal in vacuum, was needed adjustable power source capable of delivering a sufficiently high current (usually 25-50 A) and a low voltage of 1-5 Volts. This source is needed to heat the boiling type evaporator of molybdenum or titanium, resistance of which can be from 0.05 - 0.5 Ohm.
To conduct research in the field of creating functional coatings, mentioned in [3,4], was required a mathematics model of buck converter. Without correct model is practically impossible to build adjustable power source for thermal evaporation of metal in vacuum.