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Four-output switcher is a cool option

Edited by the Electronicstalk editorial team Mar 9, 2004

The JPS250 quad is a versatile four-output power supply in a rugged U-channel chassis for space-sensitive applications or where insufficient system air is available and conduction cooling is required.

The JPS250 quad is a versatile four-output power supply in a rugged U-channel chassis designed for space-sensitive applications or where insufficient system air is available and a conduction cooled rating is required.

At 38mm high it fits into a standard 1U rack and delivers 250W at up to 50C ambient with only 510 litre/min of cooling or 200W with convection cooling.

The chassis is 203mm long and 107mm wide.

The JPS250 series uses zero voltage switching technology to achieve up to 90% efficiency and low noise and ripple of +/-1% maximum peak-to-peak.

The high efficiency means less heat generation and improved MTBF at 255kh to MIL-HDBK-217F.

There are four models in the quad range with output voltages from: 3.3, 5 and +/-12V, including high current outputs on both V1 and V2; +/-5 and +/-12V; 5, +/-12 and 24V; to 5, +/-15 and 24V.

The power supplies accept input voltages from 85 to 264V AC with active power factor correction to EN61000-3-2, -3 standards.

All have international safety approvals and meet Class B conducted EMI requirements.

Other features include: a separate fan output; remote sensing; remote on/off; +/-10% output voltage adjustment on V1; and overtemperature, overvoltage and overcurrent protection.

Line regulation is +/-0.5% and load regulation is +/-1% for V1 and V2, +/-5% for V3 and V4.

AC OK and DC OK signals are provided and active current sharing and fan covers are available as options.