A practical test method for DC-DC converter qualification

DC-DC power converters, also referred to as Point-of-Use Power Supplies (PUPS), which mount directly to a printed circuit board are a commonly available commercial device. These devices come in a multitude of shapes and sizes from a wide range of manufacturers. As the key interface between the incoming battery feed voltage and the complex electronics which make up today´s telecommunication products, reliable power converters are critical to uninterrupted system operation. In light of the fact that factors relating to the design and manufacture of these devices are out of Nortel´s direct control, a systematic approach was developed to aid in assessing the quality and robustness of product being purchased by Nortel. This paper will describe the process used by Nortel to evaluate DC-DC power converters