TDK Corporation introduced the 200W TDK-Lambdabrand PYH200 series of DC-DC converters. Featuring a 12:1 ultra-wide input range of 14 to 160Vdc, these board mount products are packaged in the industry-standard half-brick format measuring. 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
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 synchronization 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.