200W half-brick DC-DC converter has 12:1 input

200W half-brick DC-DC converter has 12:1 input

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By Nick Flaherty

TDK has launched a 200W DC-DC converter series with a 12:1 ultra-wide input range of 14 to 160Vdc for rail and industrial designs.

The TDK-Lambda PYH200 board mount DC-DC converter series is packaged in the industry-standard half-brick format measuring 61.0 x 57.9 x 12.7mm (L x W x H). The housing is silicon potted to provide a high level of resistance to shock and vibration. This is beneficial for applications compliant to EN 50155, the standard for electronic equipment used on railway rolling stock.

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The PYH200 is available with 12V, 15V, 24V and 48V nominal outputs, adjustable over a -20% to +15% range for non-standard voltages. All models have overcurrent, output-overvoltage and overtemperature protection. Standard functions include remote sense, remote on/off, frequency synchronisation to an external clock, and the ability to extend the hold-up time by connecting an electrolytic capacitor to the BUS terminal.

The power modules have efficiencies of up to 90% and can operate with a base plate temperature of -40 to +100°C. Optional heatsinks facilitate convection cooling, forced air cooling or the modules can be conduction-cooled.

Input to output and input to baseplate isolation is 3,000Vac with an output to baseplate isolation of 500Vac. Certification is to the IEC/UL/CSA/EN 62368-1 safety standards with the CE and UKCA marks for the Low Voltage and RoHS Directives. The PYH200 in combination with a typical test setup has been tested to meet the EN 50155, EN 45545-2, EN 61373 and EN 50121-3-2 railway standards.

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