Flex - Model BMR491 Series - Isolated DC/DC Converter for Datacom Applications
1300-2450 W quarter brick digital isolated DC/DC converter for datacom applications. The BMR491 is the sixth generation of our digitally controlled Advanced Bus Converter packaged in a quarter-brick format. There are three versions, with input voltage ranges of 40 to 60V and 48 to 60 V, which meet the typical voltage requirements used in a data center environment. Each device delivers a nominal output voltage of 12 V.
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Details
Two initial versions have a continuous output power of 1300 W, and the 48-60 V input variant of that can deliver a peak power level of up to 1850 W for <1 second. This version of the BMR491 has a typical efficiency of up to 97.6% at 48Vin / 50% load.
The third version has a continuous output power of 1540 W, and can deliver a peak power level of up to 2450 W for <1 second. This version of the BMR491 has a typical efficiency of up to 97.5% at 48Vin / 50% load.
The BMR491 series has an operating temperature range from -40°C up to +125°C (hot spot temperature) and has a mean time between failure (MTBF) of over 7 million hours.
The BMR491 incorporates enhanced thermal conduction techniques for superior heat transfer through the baseplate.
Standard features for the BMR491 include hybrid regulated ratio (HRR) for the 48-60 V input versions, active current sharing for the 40-60 V version enabling paralleling of up to 5 modules, output over voltage protection, output short-circuit protection, over temperature protection, and a digital interface using the PMBus® protocol using either the 4-pin or 7-pin industry standard.
The BMR491 includes a PMBus® interface for digital Configuration, Monitoring and Control, and is supported by our own Flex Power Designer tool.
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