The QBK033 series bus converter is a 400W quarter-brick power module designed for high-power, high-density applications. The module is a semi-regulated unit that produces an efficiency of 94% and a power density of 288W/in2 (18W/cm3) for a 400W, quarter-brick power module. It has an input voltage range of 36-60Vdc and is able to deliver up to 33A of output current. Its nominal output voltage is 12Vdc with overall line, load and temperature regulation of only ±5%. The converter can reach a high capacitive load of up to 10,000µF while exhibiting very low output ripple and noise and responding rapidly to sudden load changes. For example, a 25% load change will only cause a voltage deviation of - 2%. The converter employs a full-bridge conversion topology with synchronous rectification on the synchronous secondary rectification and incorporates edge-plating and innovative packaging technology to achieve superior thermal performance. With an industry standard quarter-brick pin measuring 57.9x36.8x10.6mm (2.28x1.45x 0.42in.), the dc/dc bus converter operates over a wide temperature range of -40°C to +85°C. It is also fully compliant with the Restriction of Hazardous Substances (RoHS) Directive (200/95/EC).
