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Luso stocking RCD20U DC/DC converter series

Luso Electronics is now stocking the RCD20U, a DC/DC converter series that provides high performance and high reliability for railway and industrial applications.

The series comes in a compact 1"x1" industrial standard package and delivers up to 20W output power. These converters feature an 8:1 or 12:1 ultra-wide input voltage range of 9-75VDC and 14-160VDC which is intended to simplify the design of the power stage of a system. Using just one DC/DC model converter for different supply voltages (24, 28, 36, 48, 72, 96, 110VDC) in different regions avoids multiple input voltage models in the warehouse.

The patented enhanced Hold-Up Function is designed to simplify the design of supply interruption and changeover as per EN 50155. Generally, to keep the device functioning during the supply voltage interruption or changeover, capacitors are required to be installed at the input terminals. The capacitance and rated voltage of the capacitors vary according to the supply voltage in use. The BUS pin of RCD20U provides a stable and fixed charging voltage which allows the usage of just one Hold-Up capacitor for any input voltages and in addition, reduces the in-rush current at the start-up phase.

This series includes single output and dual output models with 5, 5.1, 12, 24, ±12, ±15VDC. It has various self-protection functions such as: over-current protection, output short-circuit protection, output over-voltage protection, adjustable input under-voltage lockout and over-temperature protection. By installing a heatsink on the module these converters achieve the operating temperature class OT4 and the extended operating temperatures ST1, as per EN 50155 standards.


  • 20W Output Power in a 1″x1″ Industrial Standard Package
  • 8:1 & 12:1 Input Voltage Range from 9-75V and 14-160V
  • Patented Enhanced Hold-up Function for Supply Interruption and Changeover
  • Adjustable UVLO
  • Operating Temperature: -40°C to +105°C
  • 3000VDC Input-Output Isolation
  • Operating Altitude: up to 5000m
  • Approved to EN 50155 | EN 45545-2 | IEC/EN/UL 62368-1 Standards
  • 3-Year Product Warranty

This series is certified according to IEC/EN/UL 62368-1, EN 50155 and EN 45545-2 standards (pending). Additionally, shock and vibration levels 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 and a 12:1 input voltage range, these converters are suitable for any ruggedized, high-reliability applications such as rolling stocks and transportation in harsh industrial environments.

Samples are available now.