TracoPower TMR 3 Series 3W DC-DC Converters – TracoPower TMR 3-1222, The TracoPower TMR 3 series offers insulated, regulated 3W DC-DC converters with a wide 2:1 input range supplied in an ultra-compact SIL-8 housing. These converters are suitable for a number of applications in telecommunications, industrial and communication systems, where space is a critical factor. TracoPower TMR 3-1222 3W DC-DC Converter 9 – 18V DC In ±12V DC ±125mA Out