C&D Technologies Offers NDY2403/NDY4803 Converters

C&D Technologies Inc. (Tucson, AZ) introduced two new miniature, wide-input, isolated, 3W, dc/dc converters with a wide 2:1 input range and a board-mounting profile of just 7mm, which are suitable for rack-mounted telecommunications applications and other designs where space above the PCB may be limited.

Featuring an industry-standard footprint, the new NDY2403 and NDY4803 converters provide a single, regulated 3.3V output and have an input-to-output isolation rating of 1kVdc. The NDY2403 can handle input voltages from 18V to 36V, while the NDY4803 is suitable for input voltages from 36V to 72V. Each converter will deliver a full 3W output at temperatures from -40 to +85 degrees C without the need for a heatsink.

Both of the new dc/dc converters incorporate a flyback oscillator design with isolated feedback to ensure regulation over the full operating range of 25 to 100 percent of full load. Typical load-and-line regulation for each device is rated at 0.6 and 0.05 percent, respectively, while maximum ripple and noise ratings are just 180mV (peak-to-peak). The new dc/dc converters incorporate continuous short-circuit protection and are based on an SMD construction that contributes to MTTF ratings in excess of 1,600,000 hours. Both devices are supplied in a fully encapsulated, UL 94V-0-compliant package with a footprint of 4.73cm² and a power density of 0.90W/cm³.

The new dc/dc converters are priced at less than $9 for OEM quantities.