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TDK-Lamda expand power supply line-up with low-voltage models

13 Sep 2013  | Steve Taranovich

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TDK-Lambda recently expanded its GWS500 series power supplies with the addition of two low output voltage models. Combining the same high efficiency, high power density and low standby power characteristics as other models within the series, the 5V 80A and 7.5V 67A models are well-suited for fitting into 1U enclosures.

The GWS series is a 400W to 500W AC-DC, forced air-cooled power supply that achieves up to 90 per cent efficiency, cutting the heat generated in industrial, LED, display/signage, IT, traffic controls, automated service, kiosks, test & measurement, and audio/video applications.

Featuring a 104.14x218.44mm footprint and 40.64mm height, the supply is one of the smallest products in its class. This series is now offered in six models with nominal outputs of 5V, 7.5V, 12V, 24V, 36V and 48V. 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 for motor start-up, the 24V and 36V models can deliver up to 600W for 10 seconds. The supply can be operated at full load from -25 to 50°C ambient temperature and up to 70°C with suitable derating.

Output derating curve for GWS500 Power Supply

Figure 1: Output derating curve for GWS500 Power Supply.

These power supplies include over-voltage, over-temperature and over-current protections. Also included are 5V/0.3A standby output, remote on/off, and DC Good signal, as standard.

Cooling information

Figure 2: Cooling information and mounting options for GWS /L /F options.

The device operates from 85 – 264VAC, 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.

Further information regarding the GWS500 series power supplies can be found here.

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