RFE2500 Series Industrial Power Supplies

TDK Corporation announces the release of the TDK-Lambda brand, RFE2500 series AC-DC power supplies. Delivering up to 2500 W output power in a low-profile, 1 U package, the RFE series has rugged screw terminal and bus-bar connections. These industrial supplies are ideal for use in many applications requiring reliable 12 V, 24 V, or 48 V bulk power.

Operating efficiencies of 90 to 93% minimize waste heat dissipation and eases system cooling requirements. With a universal input of 85 V_AC to 265 V_AC applications for the RFE2500 supplies include communications, factory automation, test, measurement, and broadcast/RF amplifiers.

The RFE2500 is fully featured with AC fail, DC good, remote on/off, remote sense, a 12 V 0.5 A auxiliary supply, ±20% output voltage adjustment (by either front-panel potentiometer, external resistance, or a 0 V to 5 V signal), and overcurrent set-point programming. Up to eight units can be connected in parallel for higher power, and internal O-ring FETs allow redundant operation.

The units can operate at full load in ambient temperatures of up to 50°C and deliver 50% load at 70°C. The case measures 107 mm x 41 mm x 345 mm, making it suitable for 1-U-high racking systems, and the weight is just 2.5 kg. Cooling is provided by two internal temperature-controlled fans to reduce acoustical noise.

Models with a “/S” suffix include an optional I²C/PMBus serial communications port for remote programming of the output voltage and remote ON/OFF. In addition, the output voltage, output current, internal temperature, and status signals can be monitored.

Input to output isolation is 3 kV_AC, with all models certified to UL/CSA 60950-1, IEC/EN 60950-1, and carrying the CE mark for the low voltage and RoHS₂ Directives. All units meet EN55011/EN55022-B conducted emissions (Class A radiated) and comply with IEC 61000-3-2 harmonics and IEC 61000-4 immunity standards.