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TDK debuts 250W convection cooled power supply

17 Jun 2013  | Steve Taranovich

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TDK Corporation recently revealed the CUS250LD serieslow profile AC-DC power supplies. The single-output supplies provide 250W of output power with convection cooling, by passing the need for fans. The design rids the need for fan maintenance while also reduces acoustic noise and vibrations.

power supplies

TDK Corporation's CUS250LD serieslow profile AC-DC power supplies.

The supplies have a low profile of 29.97mm and a footprint of 101.6x198.12mm, in applications such as light industrial, LED signage, communications, broadcast, gaming, point-of-sale, IT, and test & measurement equipment.

Performance graphs

Figure: Performance graphs of the CUS250LD serieslow profile AC-DC power supplies.

The supplies operate from a universal worldwide input of 85-264Vac, 47-63Hz, with PFC. They are also capable of operating from a 120-370Vdc input. These units have an input- to-output withstand voltage of 3kVac. The series is available with an output voltage of 3.3V, 4.2V, 5V, 12V, or 24Vdc, all of which have a ±10 per cent user-adjustment range.

The convection-cooled operating temperature range is from -25°C to 70°C with derating above 40°C. The power-saving efficiency is up to 90 per cent. Other standard features include over-voltage and over-current protections plus a green LED indicator that is lit when the supply is on.

The series features global ITE and general purpose safety agency certifications per UL/CSA/EN60950-1, EN50178, and are CE Marked. They meet the conducted and radiated EMI requirements of EN55022-B & FCC Class B.




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