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News Article

Flex Power boosts quarter brick DC/DC power rating

News

New device range offers 1600 W continuous and 2320 W peak

Flex Power Modules has added a new device to its range of quarter brick non-isolated DC/DC converters that increase power densities.

The BMR351 has a 40-60 V input range and a delivers a non-isolated but fully regulated output of 12.2 V nominal. Rated output current is 136 A continuous (1600 W max) and 200 A peak for up to 500 ms (2320 W max). The converter features efficiency levels that peak at over 98 percent, and with a typical value of 97.8 percent at 54 Vin and half load.

BMR351 converters can be paralleled using the droop load sharing technique for higher power, and include a PMBus interface for configuration, monitoring and control, with the output adjustable over the range of 8 V to 13.2 V. Hardware pins are provided for remote sense, power good and remote control. The Flex Power Modules innovative ‘black box’ event data recorder is also implemented for diagnostics after fault occurrences.

The BMR351 is intended for baseplate cooling and is characterised for a component hotspot temperature of 125 °C. Thermal management allows safe peak power operation with fast and timed over-temperature protection, with an ALERT signal to indicate impending thermal shutdown.

The BMR351 is supported by the Flex Power Designer Tool for electrical and thermal simulation in the end-application.


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