Ericsson adds digital power contol to RAID systems
Ericsson has a digitally-controlled 12V bus converter designed for powering Redundant Array of Independent Disks (RAID) and Network Attached Storage (NAS) hard-disk applications that operate with high capacitive loads up to 15mF.
Designed for 12V bus applications that might only require 6V in standby mode, controlled via PMBus commands, the output voltage of the BMR4560004/018 can also be adjusted to as little as 4V, even powering 5V board-level subsystems in idle mode, delivering significant headroom to board designers.
420W output power
The converter embeds a voltage-mode-control algorithm that maintains a tight output voltage between 11.88V and 12.12V and accurately controls the 20ms ramp-up time.
It has an output power of 420W and an efficiency of 96% from low to high load.
The converter meets the insulation requirements of EN60950, sustains an I/O isolation voltage of 2,250Vdc.
It has remote sensing, PMBus-configurable protection (over-temperature, over-current and over-voltage), configurable start/stop and voltage margining.