Power Electronics / Power Management


Open frame power supply

15 October 2008 Power Electronics / Power Management

XP Power has announced the availability of its ECM140 series of compact open frame single-output AC-DC power supplies. Measuring 76,2 x 127 x 33 mm and offering high power density, the units require just 10 CFM of forced air-cooling to achieve their full rated 148 W output.

The supply includes a 12 V/0,5 A fan output as standard, removing the need for an additional voltage source to power a fan. To help compensate for any voltage drop at the output, remote sense is also standard. If convection cooled, the power supply achieves 120 W output. Within the range, five models are available providing the popular outputs of 12, 15, 18, 24 and 48 V d.c.

The series meets the electrical safety standards of both IEC 60601-1/EN 60601-1 for medical equipment and IEC 60950-1/EN 60950-1 for industrial and IT equipment. The series also meets EN 55022 specifications for Class B conducted emissions without the need for additional filtering components.

Using a resonant topology, the units typically achieve 88% efficiency above 70 W with a very flat efficiency curve. This approach also aids to improve the units EMI performance.

In addition to the standard version, all models are also available with an optional 5 V standby supply output, power OK and dual polarity inhibit signals.



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