Bulk power dc/dc supply

According to Murata, the unit is typically 93% efficient at half load power and is designed to deliver bulk power to 54V dc distributed power applications. It has a floating output to enable design engineers to wire the power supply in a 54V configuration for data centre environment or -54V configuration for telco central office environment. A 5V dc 0.75 A standby output is also provided. Typical applications include use in telephone exchanges in line from the battery bank. The 1U unit is capable of operating over an input range from -40 to -72V dc and measures 344.4 x 101.6 x 40.6mm. It has a high power density of 24.3W per cubic inch and 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.