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Isolated DC-DC Converters Target Railway EN50155 Systems

Vicor’s new DCM2322 ChiP family is a lower-power and smaller package variant of its DCM3623 family and provides power system engineers a smaller footprint option with input voltage ranges that meet multiple EN50155 standards. Modern rail infrastructure requires a wide range of DC-DC converters to power a variety of new safety systems and passenger services, says Vicor, as well as creating a need for performance improvements in existing systems for both freight and commuter markets. Power density, efficiency and ease of use are critical considerations when designing isolated, regulated DC-DC converter systems for modern rail applications.

Packaged in a 22 x 23 x 7 mm ChiP, the new series offers engineers wide input voltage ranges of 43 – 154V and two more narrow input voltage ranges of 14 – 72V and 9 – 50V, with power levels ranging from 35 to 120W and efficiencies up to 90.5%.

The extensive family of isolated DCMs utilize the Vicor high-frequency zero-voltage switching topology to achieve industry-leading thermal and electrical performance, with power densities five times greater than competing DC-DC converters, says Vicor.

In additional to modern rail applications the DCM2322 is well suited for powering a broad range of robotics, UAV, communications and defense/aerospace applications.

DCM2322 ChiP family of parts:

  • Package size
    • 0.97 x 0.90 x 0.30in (22 x 23 x 7mm)
  • 43 – 154V input
    • 3.3V output at 40W
    • 5V output at 60W
    • 12V, 15V, 24V, 28V, 48V output at 120W
  • 14 – 72V input 
    • 3.3V output at 35W
    • 5V output at 50W
    • 12V, 15V, 24V, 28V, 48V output at 100W
  • 9 – 50V input
    • 12V, 15V, 24V, 28V and 48V output at 60W

Vicor |


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