TDK-Lambda UK has developed a new series
of 'green' power supplies that comply with the energy saving
requirements of Energy Star and the ErP (Energy related Products)
Directive. Intended for use in light industrial equipment and front-end
equipment for broadcast and communications applications, the 250 W GWS
series AC-DC power supply uses innovative design techniques to combine
high efficiency, high power density and low standby power with the
confidence of a five-year warranty.
The GWS250 is equally well-suited for indoor and outdoor LED
information displays and digital signage, traffic controls, test and
measurement and entertainment systems.
Designed with a 105 x 199 mm footprint and 1U height, the GWS250 is a
compact and convection cooled product fitting into spaces previously
requiring a fan cooled model. Rated at 250W the power supply is offered
in four models with nominal outputs of 12 V (21 A), 24 V (10.5 A), 36 V
(7 A) and 48 V (5.3 A). Outputs are user adjusted by up to 20% depending
on model type – and the 24 V and 36 V models have a peak power rating
of 300 W. With a flat efficiency curve averaging at 93%, from 25 to 100%
load, the GWS250 range can be operated at full load from -25 to 50°C
ambient temperature and up to +70°C with suitable derating.
The GWS250 series from TDK-Lambda has overvoltage, overtemperature and
overcurrent protection (constant current mode for 24 V, 36 V and 48 V
models, 12 V hiccup mode). Models in the GWS250 series also feature
<0.5 W no load input power, 5 V/0.3 A standby output, remote on/off,
DC GOOD signal and a voltage programming function as standard.
CE marked in accordance with the LV Directive, the GWS250 carries a host
of environmental and safety approvals including EN55022 and FCC Class
B, UL60950-1, CSA C22.2 No.60950-1-07 (cUL), EN60950-1 edition 2 and
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This article originally appeared on EE Times Europe.