A Novel Optimization Strategy for Point of Load Converters

摘要

Today, many electrical applications use the DC-DC buck converter topology as point of load (POL) converter with synchronous rectifiers to provide the desired output voltage for different loads and components. While its efficiency is usually optimized for high output powers, in case of low and mid power it is often reduced. Nevertheless, since many applications force these converters to operate at part load condition most of the time, the system's overall power consumption can be reduced noticeably by optimizing the efficiency at its main operating point. This paper deals with the specific efficiency improvement of an existing industrial POL converter (P_(o,max)= 60 W) towards its main operating point at part load with P_o= 15W.