Power supplies achieve 90% efficiency

TDK-Lambda Americas announces a new line of “green” 500-watt power supplies that comply with the European energy saving requirements of the ErP (Energy related Products) Directive. Suitable for use in industrial, broadcast, and communications applications, GWS500 series power supplies employ advanced design techniques that combine high efficiency, high power density, and low standby power consumption (<0.5 W, no-load) with a five-year warranty. The 500-W ac-dc, forced air-cooled power supply achieves up to 90% efficiency, cutting the heat generated in industrial, LED, display/signage, IT, traffic controls, automated service, kiosks, test and measurement, and audio/video applications.

Featuring a 4.1 x 8.6 in. footprint and 1.6 in. height, the GWS500 is very small and well suited for fitting into 1U enclosures. Rated at 500 W, the new series is offered in six models with nominal outputs of 5, 7.5, 12, 24, 36, and 48 V. To accommodate non-standard system voltages, the GWS500’s output is user-adjustable, either via the built-in adjustment potentiometer or by injecting an external programming voltage. Where peak power is needed, for example during motor start-up, the 24 and 36 V models can deliver up to 600 W for 10 seconds. The supply can be operated at full load from -25° to 50° C ambient temperature and to 70° C with suitable derating.

These power supplies include overvoltage, overtemperature, and overcurrent protections. Also included are 5V/0.3A standby output, remote on/off, and dc good signal. The GWS500 is UL/EN/IEC 60950-1 safety certified (2nd Edition) and carries the CE mark. All models meet EN61000-4-X immunity and EN61000-3-2 harmonic correction standards.

For more information, contact TDK-Lambda Americas Inc., 3055 Del Sol Blvd., San Diego, CA 92154. Phone: (800) 526-2324.