Miniature DC-DC converter is optimised for rail applications

RECOM has achieved a new level of high-efficiency DC-DC performance in a compact 1.6” x 1” x 0.4” package (40.6mm x 25.4mm x 10.2mm). The RPA20-FR series delivers 20W over its full 36VDC-160VDC input range (200VDC peak for one second) from -40C to 70C and 105C with derating. Fully regulated, low-noise, and protected single outputs available are 5V, 5.1V, 12V, 15V, and 24VDC, trimmable by +20%/-10% minimum, while +/-5V, +/-12V, and +/-15VDC options are also provided. Remote ON/OFF control with positive or negative logic and under-voltage lock-out is included, and no minimum load is required.

The parts are designed especially for rolling stock applications with nominal input voltages of 48V, 72V, or 110VDC and are EN45545-2 and EN50155 compliant and for UL/IEC/EN62368-1 for audio/video and IT applications. Full 3kVAC/1min reinforced isolation is provided, and the parts comply with EMC ‘Class A’ levels as well as rail EMC standard EN 50121-3-2. A separate protection module, RSP150-168, is available to protect against surges according to RIA12 and NF F01-51 standards.

The RPA20-FR series meets environmental standards required for rail applications, particularly EN45545-2 for fire protection, EN60068-2-1 for dry and damp heat, and EN61373 for shock and vibration. MTBF is over 1.5Mhrs at 25C, according to MIL-HDBK-217F, GB.

“The rail environment can be harsh, but these power-dense and reliable DC-DCs are a perfect cost-effective solution,” comments Stanislav Suchovsky, MSc, technology engineer of RECOM. “Their performance also makes them a good fit for other critical applications such as in industrial, energy, IT, and test and measurement”.

Parts include a three-year warranty.