Intermediate bus converter optimises energy use

Based on a digital core controller embedding an energy-efficiency optimiser algorithm, the BMR453 and BMR454 devices offer fully regulated outputs at power levels and efficiencies usually only associated with un-regulated or semi-regulated bus converters.

The industry-standard 'five-pin' pin-out and fractional brick footprints are maintained throughout, allowing for smooth migration from other bus converter solutions.

The BMR453 packs up to 396W (or 60A) into a quarter-brick package measuring 57.9 x 36.8mm and is available either as an open-frame package for low-profile, convection-cooled applications, or mounted with a base plate for conduction cooling to a suitable heat sink or cold wall.

Factory-preset output voltages are available from 3 to 13V and efficiencies are as high as 96 per cent.

In addition, the eighth-brick BMR454 offers up to 240W (or 40A) in a 58.4 x 22.7mm package with similar performance figures.

Both ranges accept the Telco standard 2:1 input voltage range of 36-75V and have a standard operating temperature range of -40 to +125C.

Safety features such as over-current, over-voltage and over-temperature protection are included, as well as continuous short-circuit protection.

An energy-saving remote on/off function is included as standard.