Murata Power Solutions announced the D1U4CS front-end 2,100 Watt DC/DC power supply. This unit, typically 93% efficient at half load power, is designed to deliver bulk power to 54 VDC distributed power applications. With a floating output, the design engineer can wire the power supply in a +54V configuration for data centre environment or -54V configuration for telco central office environment. A 5 VDC, 0.75 A standby output is also provided.

Typical applications include use in telephone exchanges in-line from the battery-bank providing a highly reliable and regulated supply. Capable of operating over a wide input range, from -40 to -72 VDC, this 1U unit measures 344.4mm x 101.6mm x 40.6mm (13.5 inch x 4 inch x 1.6 inch) and has a power density of 24.3 Watts per cubic inch.

Two internal fans provide forced air cooling. The D1U4CS is N+1 redundant, hot-swappable and capable of droop current sharing. It has a set of power control, logic signaling and operational status functions. The supply can automatically recover from over current and over temperature faults. These faults and all other signals are available though the I2C / PMBus interface together with status information by front panel LEDs.