Monday, June 17, 2024

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.

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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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