Ultra-wide DC-DC simplifies design for EN50155 rail applications

P-Duke now offers another ultra-wide input voltage range DC-DC converter, the RED40U, to its selection of DC-DC converters with a 12:1 input voltage range. This DC-DC converter series delivers high performance and reliability for any railway/rolling stock and industrial application. The compact 2"x1" industrial standard package provides up to 40W output power and supplies 8:1 and 12:1 ultra-wide input voltage range of 9-75VDC and 14-160VDC, simplifying the systems power stage design. Using just one DC-DC converter model for different supply voltages (24, 28, 36, 48, 72, 96, and 110VDC) in different regions bypasses multiple input voltage models in the warehouse.

The patented enhanced Hold-Up Function is intended to simplify the design of supply interruptions and changeovers as per EN 50155. The BUS pin of the RED40U delivers a stable and fixed charging voltage which enables the usage of only one Hold-Up capacitor for any input voltages and decreases the in-rush current during the start-up phase.

This series includes single and dual output models with 5, 5.1, 12, 15, 24, ±12, and ±15VDC. It has varied self-protection functions, i.e., 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 attain the operating temperature class OT4 and the extended operating temperatures ST1, per EN 50155 standards. The new series is certified according to IEC/EN/UL 62368-1, EN 50155, and EN 45545-2 standards (pending). Also, shock and vibration levels are compliant with EN 61373 and MIL-STD-810F. With an operating altitude of up to 5000m, a wide operating ambient temperature of -40C to +105C, and a 12:1 input voltage range, these converters are particularly suited for any ruggedised, high-reliable application such as rolling stocks, transportation, and construction machinery in harsh industrial environments.