Power Electronics

Industrial 100-W AC-DC Switcher Features Highly Compact Form Factor

The ECM100 single-output ac-dc switching power supply from XP Power is extremely compact. Using innovative physical and electrical construction, it comes with full industrial, IT and medical approvals to make it suitable for industrial applications. A footprint of 4.5 in. × 2.5 in. and a 1.2-in. profile puts the power density of the ECM100 at 7.4 W/in3.

Additionally, the unit features Class I and Class II approvals, EN61000-3-2,-3 compliance, and Level B performance for conducted emissions. Outputs are from 3.3 Vdc to 48 Vdc, and the power supplies have safety approvals for any voltage within this range, including custom-specified outputs. Input voltage is from 85 Vac to 264 Vac or 170 Vdc to 270 Vdc, and efficiency is up to 87%. The size of the ECM100 has been achieved by minimizing component count and using only two heatsinks. In addition, the design of the flyback converter combines continuous and discontinuous modes of operation to enable a much smaller transformer to be used.

The ECM100 has a leakage current below 100 µA at 115 Vac and less than 200 µA at 230 Vac. Inrush current is 40 A maximum at 230 Vac with the input protected by 3.15-A fuses in both line and neutral. Input to output isolation is 4000 Vac. Outputs are adjustable by ±5% on 3.3-V and 5-V models and by ±10% on those with higher output voltages. Line and load regulation are ±0.5% and ±1%, respectively, and there is no minimum load requirement. The operating temperature range is 0°C to +80°C, and the power supplies have overtemperature, overvoltage and overload protection built in.

Available now, the ECM100 is priced at $52 each for 1000 pieces.

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