HFE1600 Series of Front-End Power Supplies

A line of 1,600 W front-end power supplies for use in distributed, hot-pluggable, and redundant power systems, the HFE1600 series operates off a universal AC input of from 85 to 265V AC, with active PFC, and provides a well-regulated DC output of 12, 24, 32, or 48V.

Operating efficiencies of up to 92% are typical.  With the 19-in. (483 mm) rack-mount enclosure as many as 5 supplies can be paralleled with automatic load-sharing to provide up to 7,600 W of output power. A popular option is an integral MCU in each supply that allows for remote programming, monitoring, and status reporting via an isolated I2C and PMBus interface. And, an energy-saving feature of the I2C/PMBus interface is that rack-mounted HFE1600 supplies can be individually turned on or off as the total system load demand varies over time (aka load-shedding).

Key applications for the HFE1600 series include data centers, wireless base stations, industrial automation, telecommunications, RF power amplifiers, network equipment, storage systems, and distributed power architectures.

The HFE1600 supplies, each measuring only 2 x 3 x 12 (51 x 76 x 305 mm) (H x W X L)can be used individually, or as many as 5 can be mounted in a 1U-high 19-in. (483 mm) rack enclosure to form a parallel connected, load-sharing, hot-swap, N + M redundant 7.6 kW power system. Should a fault occur each supply has an internal ORing MOSFET switch that will automatically disconnect it from the load and the other paralleled supplies. Plus, alarm signals and LED indicators are provided to identify a faulty unit. For added power, up to 2 rack-mounted enclosures can be parallel or series-connected.

When employing the HFE600-S1U rack-mount enclosure the DC outputs and current-share lines of each plugged-in HFE1600 supply are automatically connected in parallel with the others. In this way, scalable and expandable power is easily achieved, even in the field. The rack assembly includes two sets of output bus bars, each of which is rated at 200 amps, for a total of 400 amps per rack. And, for higher power applications, up to 2 power racks containing up to 10 model supplies can be zero-stacked (no space required between racks) and connected in parallel to provide up to 15.2 kW of total output power in a compact 2U vertical space. Likewise, up to 2 rack-mounted sets with 5 units each can be connected in series for higher voltage requirements at up to 15.2 kW.

Each HFE1600 supply has 2 variable-speed cooling fans and can operate in temperatures ranging from 14 to 158°F (-10 to 70°C).  The airflow is directed from the front of each unit to the rear where the I/O connector is located.