250W PFC-input AC/DC power supplies suit extreme environments
The PPF 250-P59X series of fully encapsulated, industrial quality AC/DC power supplies deliver up to 250W output power from a universal 95 - 264VAC Power Factor Corrected (PFC) input. The units provide a single, regulated output of 12, 24, 48, 72, 110 or 125VDC. A DC-input version, which offers a 95-350VDC input range, is also available.
Typical conversion efficiency is 80% at full load. The power supplies are specifically designed for operation in extreme environments. The units are fully encapsulated with a thermally conductive MIL-grade silicon rubber compound with a UL94V-0 flammability rating to ensure protection from high levels of shock and vibration, moisture and other contaminants.
They also meet environmental criteria as requested in MIL-810C, D. Conduction cooling via the baseplate enables operation within a -40 to +70°C temperature range for full specification with no derating required. The power factor is corrected to a minimum of 0.97 at full load for the entire input range in compliance with EN6100-3-2 for low input harmonic distortion. The power supplies are filtered to meet EN55022 EMI Class A with generous margins. Filtering to meet Class B is available on request. Full electronic protection on the input and output includes 4300VDC input/output isolation, overload, overvoltage, short-circuit protection and thermal shutdown with auto-resetting.
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