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 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 0-5 V signal), and over-current set-point programming. Up to eight units can be connected in parallel for higher power, and internal ORing 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 x 41 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.