Flex Power Modules have recently announced the inclusion of 2 new modules to their BMR491 range. These digitally controlled Advanced Bus Converter packaged modules come in a quarter-brick format with power ratings of 1400W continuous/ 2400 W peak for BMR4912307/856, and 1540 W continuous / 2450 W peak for the BMR4913208/857 variant. Each device delivers a nominal output voltage of 12 V with input voltage ranges that include 48-56 V and 40-60 V for data centre applications.
Both the variants come equipped with Flex Power Modules’ ‘Hybrid Regulated Ratio (HRR)’ technique for achieving efficiencies of up to 97.5% when running at half load. The output voltages in the HRR technique doesn’t vary with the load current but with the input voltage, thus improving efficiency and EMI filtering capabilities.
According to the company, these modules have advanced safety features such as enhanced thermal conduction techniques, output over-voltage protection, output short-circuit protection and over-temperature protection, in addition to this the data centre variant also supports active current sharing which enables paralleling of up to 5 modules, using the PMBus protocol.
The BMR4912307/856 is suitable for space-constrained applications and has a height of 13.4 mm. For easy fault tracing and failure analysis both the modules comes with an Event Data Recorder function or a “Black Box” feature which stores date-stamped operational parameters during a shutdown event
Features of the new variants
- High peak power variant up to 2450 W
- Lower profile variant for height restricted applications
- New variants include ‘Hybrid Regulated Ratio’ regulation
- Efficiency up to 97.5% at 50% load
On asked about the need for the new variants, Anders Sellin, Product Manager of Flex Power Modules comments “More and more customers are asking us for peak power handling capabilities to support ever more dynamic loads, and we are responding with several solutions now including the BMR491 series. Employing our HRR technique makes them even more efficient as well – a winning combination”.
