The PFM4414VB6M48D0CA0 from Vicor is an AC-DC Converter that steps down an AC input voltage of 85 - 264 V to a DC output voltage of 48 V. This converter delivers an output power of up to 400 W and has an efficiency of 92%. It offers a robust mechanical design with built-in EMI filtering. This ultra-low-profile converter incorporates AC-DC conversion, integrated filtering, and transient surge protection. It has a versatile two-sided thermal strategy which greatly improves thermal design and management. The converter operates with a self-protecting control architecture and supports two temperature grades, including operation down to -40°C, ensuring suitability for diverse environmental conditions. It is available in a chassis-mount package that measures 110.55 x 35.79 x 9.781 mm and is ideal for small cell base stations, telecom switching equipment, LED lighting, and industrial power systems applications.