250W Convection Cooled Power Supply features Low Profile, High Efficiency & Wide AC Input Range

TDK Corporation announces the introduction of the TDK-Lambda CUS250LD series of low profile, AC-DC power supplies. These single-output supplies provide 250W of output power with convection cooling; requiring no fans, this design eliminates the need for fan maintenance, and reduces acoustic noise and vibrations.

In addition, they feature a low profile of only 30mm and a compact footprint of 198 x 101.6mm, making them an ideal choice for applications in light industrial, LED signage, communications, broadcast, point-of-sale, IT, and test & measurement equipment. The supplies operate from a universal input of 85-264Vac, 47-63Hz, with PFC, enabling them to be used anywhere in the world. Moreover, they can operate 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 which have a ±10% 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%. 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.