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AC-DC Power Modules from Lambda
AC-DC modules.
San Diego, CA — Lambda has extended its PFE series of AC-DC full-brick power modules with the introduction of the PFE500F that has additional features including active current-share and remote on/off. Like the existing PFE300S, PFE500S and PFE700S models, the new PFE500F versions provide a convenient AC-DC board-mounted solution with an output power of up to 504 watts.

Designed for applications in industrial, datacom and telecom equipment, the active current-share feature enables up to six PFE500F modules to be paralleled together to accommodate increased power requirements and/or redundancy. In addition, the positive logic remote on/off control and inverter-operation-good (IOG) functions provide greater flexibility in the start-up or shutdown sequencing and diagnostics of the power system. An auxiliary output of 10-14V at 20mA is included in the modules for powering external circuits.

The fully-regulated power modules are available in nominal outputs of 12, 28 and 48V and can be adjusted over a ±20 percent range. The 12V PFE500F delivers up to 504W with a maximum base-plate temperature of 85°C, while the 28V and 48V models deliver the same output at temperatures up to 100°C. Line and load regulation is 0.4 percent and the efficiency exceeds 83 percent in all versions. All models accept a wide AC input from 85V to 265V at 47-63Hz, have active power factor correction, an input-to-output isolation of 3kV and an enhanced input surge immunity level of up to 6kV with application circuitry. In addition, over-voltage, over-current and over-temperature protections are included.

The PFE500F comes in a compact 4.8 x 2.76 x 0.5-in. package and can be cooled with an optional heatsink. All PFE500F models are safety-approved to UL60950-1, CSA60950-1 (cUL) and EN60950-1, and carry the CE mark.

Contact: Lambda Americas, Inc., 3055 Del Sol Blvd., San Diego, CA 92154 800-526-2324 or 619-575-4400 fax: 619-429-1011 Web:


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