Wide Input DC/DC Converters designed with rail’s harsh environment in mind

by | Oct 11, 2021 | P-Duke, Press release, Rail

The RHKW/RHDW series from P-Duke are high performance EN51055 approved DC/DC converters with 3000VAC reinforced isolation with 4.5 mm clearance/ creeping distances for safety critical applications. This next generation of board mountable DC/DC converters has been designed especially for the demanding, ruggedized railway and other such industrial applications where harsh conditions are typical.

The series consists of 3-40W DC/DC converters with single and dual output models in a DIP24 (3-10W) or 2”x1” (40W) package. They have an input range of 36-160VDC and are equipped with circuits for over/under-voltage protection, over-current and short-circuit and over-temperature protection.

These high-density power converters are realized by using a patented transformer design, which lets the converters perform with an efficiency of up to 90%.

The high dielectric strength plastic housing with high-thermal conductivity, comparable with metal casing, performs the isolation between input-case-output and allows an operating temperature range of -40°C to +105°C.

P-Duke’s team of highly experienced R&D designers have equipped these converters additionally with internal EMI circuits: IEC/EN 55032 Class A and IEC/EN 50121-3-2, which simplifies the design and saves pcb space. This series is certified according to IEC/EN/UL 62368-1, EN 50155 and EN 45545-2.

Additionally, shock and vibration are compliant with EN 61373 and MIL-STD-810F. With an operating altitude of up to 5000 meters, a wide operating ambient temperature of -40°C to +105°C, 36-160VDC input range, makes them very suitable for any safety critical application where a SELV output is mandatory. Examples are Bus Voltages of 72, 96, 110 VDC which need a safety barrier on the secondary side in rolling stocks, in transportation or in harsh industrial environments.


  • 3-40 Watt output power
  • 4:1 wide input range from 36 to 160VDC
  • Built-in EN 55032 EMI Class A filter
  • 3000 VAC input to output reinforced insulation
  • Operating altitude up to 5000m
  • 3-Year warranty
  • IEC/ UL/ EN 62368-1, EN 50155 and EN 45545-2 safety approval

Our product specialists are on hand to assist with product selection and guide you through the design cycle. We offer technical and commercial support.

Please contact us for more information.


RHK03W Datasheet – 3W
RHK06W Datasheet – 6W
RHK10W Datasheet – 10W
RHD40W Datasheet – 40W


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