DC-DC Converter Delivering Up To 2450 W For Datacom Applications

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Includes electrical and thermal protection mechanisms, has high effiency and meets high safety standard norms

Here’s a new high-density DC-DC converter series: the BMR491 that can deliver 2450 W peak power for periods of up to one second, with a continuous output power rating of up to 1540 W.

The converter operates over an input voltage range of 48 V to 60 V and delivers a nominal 12 V output, making it suitable for data centre applications. At 48 Vin at half load, the efficiency is 97.5 per cent. An output current of up to 205 A can be obtained.

The BMR491 uses Hybrid Regulated Ratio (HRR) technology, which enables it to deliver extended power capabilities, as well as efficiency and resilience to voltage transients.

Inclusion of advanced over-voltage, over-temperature and short-circuit protection mechanisms help increase the operating lifespan. Mean Time Between Failures (MTBF) is over 7 million hours. Heat dissipation is helped by the inclusion of a baseplate and the use of enhanced thermal conduction techniques, with an integrated heatsink option also being available.

Supplied in an industry-standard low-profile quarter-brick format, measuring 58.4 x 36.8 x 14 mm (2.30 x 1.45 x 0.55 in) with baseplate and an integrated heatsink with a height profile of 19 mm, the new device complies with IEC/EN/UL 62368-1 safety standards. Input to output isolation is 1500 V. The converter has an operational temperature range of -40 degrees Celsius to +125 degrees Celsius.

A digital interface is available in either 4 or 7-pin DOSA standard and supported by the Flex Power Designer software tool. The BMR491 will be available from Flex Power in OEM quantities in the first quarter of 2021.


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