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TDK-Lambda convection cooled 250W power supply eliminates audible noise

25th July 2013

TDK-Lambda

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Datasheet

TDK-Lambda have today introduced a new series of low profile, AC-DC power supplies. The CUS250LD Series single-output supplies provide 250W of output power with convection cooling. Since it requires no fans, this design eliminates the need for fan maintenance, and reduces acoustic noise and vibrations. The new power supplies feature a low profile of only 30mm and a compact footprint of 198 x 101.6mm.

The CUS250LD power supplies operate from a universal input of 85-264Vac, 47-63Hz, with PFC, enabling them to be used anywhere in the world. Typical applications include those in light industrial, LED signage, communications, broadcast, point-of-sale, IT, and test & measurement equipment. Operating from a 120-370Vdc input, these units have an input-to-output withstand voltage of 3kVac. The CUS250LD series is available with nominal output voltages of 3.3V, 4.2V, 5V, 12V, or 24Vdc. All of these voltage options have a ±10% user adjustment range.

Featuring power-saving efficiency up to 90%, the convection cooled operating temperature range is from -25°C to +70°C with derating above +40°C. Other standard features include overvoltage and overcurrent protection plus a green LED indicator that is lit when the supply is on.

The CUS250LD series features global ITE and general purpose safety agency certifications according to UL/CSA/EN60950-1. CE marked in accordance with the LV Directive and RoHS Directive, the power supplies conform to EN55022-B and FCC Class B for conducted and radiated EMI and include a three-year warranty.