Power Electronics

Medical switchers deliver 400 W

A family of 400-W switching power supplies from V-Infinity is designed for a wide range of medical applications. Carrying full medical agency safety approvals, these units are available in U-frame or fan-cooled metal enclosed packaging. Exact dimensions of the VUFM-S400-XXR U-frame series measure 8.0 in. x 5.0 in. x 1.60 in. while the VUMM-S400-XXR metal-enclosed series measures 9.0 in. x 5.0 in. x 1.60 in.

All models feature EN61000-3-2 class D active power factor correction and have a leakage current of less than 300 µA. In addition, optional ORing diodes can be implemented for current sharing applications.

Voltage outputs range from 3.3 Vdc to 58.0 Vdc, adjustable by +/-5%. The units produce full output power from 0°C to 50°C, requiring only 22.95 cfm of airflow for cooling. Power de-rates linearly from 50°C to 70°C, at which point the units still produces 50% output at 70°C.

Features include on/off control, remote sense, current monitoring, power fail detect, over voltage, over current, over temperature, and short circuit protections. OEM pricing starts at $150 per unit.

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