DC-DC converters designed for railway industry

TDK-Lambda Americas has expanded its line of railway dc-dc converters with the introduction of the new 24-V input, 100-watt, CN100A24 Series. These quarter-brick modules operate from a wide range of dc inputs, spanning 14.4 to 36.0 Vdc, which is widely used in the railway industry and for 24-V vehicles. Available with output voltages of 5 V, 12 V, 15 V or 24 Vdc (adjustable ±10%), these fully regulated and isolated power modules deliver high performance.

The new dc-dc modules are suitable for both rolling stock and trackside equipment, enabling users to design cost-effective EN50155-compliant systems without the risks associated with custom product designs and in a much shorter timescale. TDK-Lambda also offers higher input range versions of these modules (CNA-110, with a input range of 60 to 160 Vdc and output ratings from 30 to 200 W. Custom design and manufacturing services are also available.

Designed for the harshest environments, the CN100A24 Series meets the stringent shock and vibration requirements of IEC61373 Category 1, Grade B. These baseplate-cooled power converters have standard pin-outs and provide full output power from -40° to 100° C at the baseplate without deratings. The 100-watt model CN100A24-12, for example, delivers 8.4 Amps at 12 Vdc with a conversion efficiency of 88% at full load. These quarter-brick modules measure 1.45 x 2.28 in. and are only 0.50 in. high.  

As standard, the CN100A24 units are equipped with remote sense, remote on/off, overvoltage and overcurrent protection circuitry, and include TDK-Lambda’s 5-year warranty. All CN100A24 models have an input-to-output isolation of 3 kVac, are safety-approved to UL/CSA/EN60950-1, and carry the CE mark in accordance with the LV Directive.

For more information, contact TDK-Lambda Americas Inc., 3055 Del Sol Blvd., San Diego, CA 92154. Phone: (800) 526-2324.