Wide Input DC-DC Converters Provide High Functionality

Sep 21, 2005 11:37 AM

C&D Technologies has introduced a new range of high functionality dc-dc converters with single isolated 3-W outputs. The new NDTS devices accommodate a 2-to-1 wide input voltage range and short-circuit protection within a small low-profile package, making them suitable for high-density applications. Load regulation ensures that outputs remain stable with changes in load and input voltage, while the ability to deliver 3-W output power at temperatures up to 85°C eliminates the heatsink requirements in most applications.

Converters in the NDTS series have a voltage set point accuracy of ±1% with external capacitors. Nominal input voltage options are 24 V and 48 V, with respective input ranges of 18 V to 36 V and 36 V to 72 V. The 24-V devices are suited to industrial and control applications, and the 48-V parts are ideal for telecommunication designs. Output voltage options are 3.3 V, 5 V, 12 V and 15 V for each nominal input voltage. In all cases, isolation between the input and output is rated at 1 kVdc. Typical line and load regulation are rated at 0.15% and 0.1%, respectively. A flyback oscillator with isolated feedback gives regulation over the operating load range with connection pins formed from a tin-plated alloy 42 leadframe. Integrated short-circuit protection minimizes the need for external protection electronics.

NDTS converters feature an internal SMD construction, and are supplied fully encapsulated in industry-standard 24-pin packages with a footprint and height of just 4.73 cm² and 7 mm, respectively. Encapsulate and case material are UL 94V-0-rated. Pricing for the series is below $11 per unit in OEM quantities.

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