400W AC-DC Power Supply Capable of 700W Peak Power

XP Power plc today announced the SDL400 series of 400W single- and dual-output ac-dc power supplies. These compact units, suitable for 1U applications, are available in four mechanical formats: U channel, U channel with cover, top fan cover, and end fan cover. All of the formats apart from the top fan mounted version are less than 1.6 inches (39.9 mm) high. A variable speed fan is used to reduce audible noise at lower load conditions and extend fan life in the fan-cooled models. For applications without a fan or forced air flow, the units can operate with convection cooling up to 220W for the single output models.

With a peak power output of up to 700W for up 0.5 seconds, the SDL400 is ideal for applications that might have a higher power demand for short duration loads such as starting up a motor. This capability saves designers from having to specify a larger, more expensive power supply to satisfy this requirement.

Single-output models are available with the popular nominal outputs between +12- and +48-Vdc, as well as both a +54- and +60-Vdc output variant. Dual-output models have a +5Vdc output in combination with a +12-, +24- or +48-Vdc or a +12 / +24-Vdc model. The output voltage V1 can be manually trimmed ±5% with the dual’s V2 output tracking by the same percentage of adjustment.

The SDL400 series has an operating temperature range from 0 to +50 degrees C, and with derating up to +70 degrees C. Overvoltage, overload and short circuit protection are standard features. Additionally, all models have remote on/off, power good and fan fail signals. The units meet EN55022 class B conducted and radiated emissions. Safety agency approvals are per UL 60950-1, CSA 22.2 No. 60950-1 and EN 60950-1 standards. A low leakage current option (500 µA) is available. The SDL400 is pricing at $198.90 each in lots of 500 pcs of the single-output U channel model.