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TDK-Lambda News
43 to 160Vdc input rail and industrial DC-DC converter series expanded with 50W, 100W, and 150W quarter brick models
Posted : 26 Nov 2024
TDK Corporation (TSE:6762) announces the expansion of the TDK-Lambda brand CN-B110 series with 50W, 100W, and 150W rated quarter-brick DC-DC converters. Capable of operating from a wide input voltage of 43 to 160Vdc, the converters are compatible with 72Vdc or 110Vdc nominal railway systems for applications such as rail rolling stock and trackside equipment.
These additional converters are available with 5V, 12V, 15V, 24V, and 48V outputs and expand the CN-B110 series from 50W to 300W. Using the trim function, they can be adjusted using a resistor or an external voltage to compensate for voltage drops or to accommodate non-standard system voltages.
To meet demanding high voltage requirements for transients and 5000m altitude, the CN-B110 series has sufficient spacing between the primary input and baseplate for a 2500Vac isolation voltage. The input-to-output isolation is 3000Vac and 500Vac between the output and baseplate. With efficiencies of up to 92%, power losses are minimised, allowing the products to operate at baseplate temperatures of -40oC and up to +100oC, with very minimal to no derating at high temperatures. Cooling is achieved using the optional heatsinks or a cold plate via the module’s aluminium baseplate.
The 50W to 150W CN-B110 models have remote on/off as standard, with an optional 7 to 11V 10mA auxiliary output (replacing the negative remote sense function). Other options include board coating, unthreaded mounting holes, a short 3mm pin length, and no encapsulation (50 and 100W models only). The quarter-brick converter's overall dimensions are 12.7mm high, 37.2mm wide, and 58.3mm in length.
All models carry the CE and UKCA marks for the Low Voltage and RoHS Directives and are certified to the IEC/UL/CSA/EN 62368-1 safety standards. In addition, the series meets the rolling stock IEC 61373 Category 1, Class B shock/vibration standards, and is designed to meet EN 45545-2 (Fire protection on railway vehicles) and EN 50155(1) (Electronic equipment in railroad vehicles) in certified systems.
