This single-output AC-DC power supply in a low profile package (less than 1U high) is for stand-alone or distributed power architectures (DPA) using 12 V, 24 V or 48 VDC bulk power. The output voltage is user adjustable. Operating efficiencies of up to 92% minimizes wasted heat dissipation and system cooling issues. Featuring a universal input of 85 to 265 VAC with PFC, typical applications for the supplies include communications, factory automation, test/measurement, robotics and broadcast/RF amplifiers. Units are available with an optional I2C/PMBus serial communications port for remote control and monitoring. Supplies can be used individually or up to ten units can be connected in parallel for high power or N+1 redundant power systems, facilitated via built-in ORing FETs and active current share ports. Each power supply has two variable-speed cooling fans and the supplies can operate in temperatures ranging from -10 to +70 °C. The unit has a power density of 23.5 W per cubic inch with dimensions of 12.6 x 3.35 x 1.61 inches. Overvoltage, overcurrent and overtemperature protection are standard features, and for system monitoring there are opto-isolated signals for DC-OK and AC-fail, along with a LED indicators for DC-OK or Fail conditions. Remote on/off control is standard as is an auxiliary 12 V/0.5 A output.
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