A convex function is a real-valued function defined on an interval with the property that its epigraph (the set of points on or above the graph of the function) is a convex set.
A rectifier is a electrical device that converts alternating current to direct current, a process known as rectification. Rectifiers are used as components of power supplies and as detectors of radio signals. Rectifiers may be made of solid state diodes, vacuum tube diodes, mercury arc valves, and other technologies.
Rectifier is an integrant part of a DC/DC converter but it produces nearly 40 percent of the powerlosses and also affect the dynamic response. So it is necessary to go deep into the rectifiers especially for the high power, low output voltage and high output current DC/DC converters. Synchronous rectification is quite applicable in high current applications as it can reduce conducting losses largely[3]-[5].