Tracopower tmr 2 series 2w dc dc converters tracopower tmr 4821 these regulated 2w dc dc converters from the tracopower tmr 2 series are supplied in a miniature sil casing and have a wide 21 input range they are suitable for a wide range of applications in communication control units and industrial equipment tracopower tmr 4821 2w dc dc converter 36 75v dc in 5v dc 200ma out