Power Electronics / Power Management


320 W AC-DC power supplies in multiple mechanical formats

28 November 2007 Power Electronics / Power Management

XP Power's SDC320 AC-DC power supply offers a choice of four formats, two using convection cooling or system airflow and two with internal fan cooling. The compact 320 W unit, measuring just 101,6 x 152,4 x 38,1 mm for the U-channel model, has a power density of 0,54 Watts per cubic centimetre. This low-profile model, suitable for 1U applications, is also available with a vented cover if required. For applications where there is insufficient airflow, two fan-cooled models are available. These have the fan mounted on the end or the top of the unit's enclosure, and offer a choice of space-saving vertical or horizontal mounting.

With its small size and variety of mechanical formats, the SDC320 is ideal for industrial, data-communications, IT and wireless applications. For applications requiring short durations of higher power, such as starting a motor, the unit makes a cost effective choice with its 700 W peak power rating. This feature saves engineers having to specify a larger and more expensive power supply.

The SDC320 series includes 11 single- and four dual-output models. Single-output units cover all popular voltages from +5 to +60 V d.c., while dual-output versions provide +5, +12, +24 and +48 V d.c. combinations, with one output being trimmable by ±5%. All models operate from 0 to +70°C, with derating above +50°C. Power output of up to 170 Watts is possible with convection cooling only.

The power supplies meet FCC Part 15 and EN55022 Level B for both radiated and conducted emissions. No additional filtering components are required, saving both space and cost. The units comply with UL60950-1 and EN60950-1 safety approvals for industrial, commercial and IT equipment. User connected equipment can be alerted to impending power or fan failure by use of the Power Good and Fan Fail signals.

For added flexibility, designers can choose between a screw terminal and Molex connector option for input/output terminations. A low leakage option is also available.



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