MTM Power offers dc-dc converters for automotive applications. The series WRC is available with 30-W, 60-W, 100-W and 150-W outputs. The converters are designed for mobile use according to EN 50 155, LES-DB-BN 411 002 and IEC 571-1 (railway, automotive). The battery voltages of 24 V, 36 V, 72 V, 90 V and 110 V +40/-45 % are covered with three input voltage ranges. All four power ranges have a high efficiency and are available with single or dual output voltages. The converters have an extreme high reliability (MTBF > 1,000,000 hr, TA = +40 °C) and an isolation of at least 2.1 kVdc (primary-secondary). Other important features are resistance against vibrations and reverse polarity protection at the input.