Non-isolated digital quarter-brick DC/DC joins BMR series
Designed for use as an intermediate bus converter for powering processors and ASICs with peak power demands, the BMR350 is a quarter-brick, non-isolated DC/DC converter, available from Flex Power Modules. It is rated at 860W continuous and 1200W peak power.
Input range is 40 to 60V (80V / 100ms) and a fully regulated output of 12V at 100A maximum, adjustable from 8.0 to 13.2V. A innovative transformer-coupled, non-isolated topology reduces component count and current stress and yields an efficiency level up to 97.8 per cent at half load 48V input voltage. Derating for the BMR350 is characterised by the Flex Power Modules 3D thermal data graphs which specify available output power for given real-world pin and baseplate temperatures up to 100 degrees C, with the user’s airflow rate. This enables maximum power to be extracted without stress to the converter.
For higher power levels, active current sharing between paralleled modules is an option. The BMR350 meets EMI standard EN 55032/FCC part 15J ‘Class B’ with a recommended external filter.
Protection is provided for output over-voltage, over-current and module over-temperature while a PMBus interface provides remote control and monitoring, supported by the Flex Power Designer software tool. An event data recorder can be interrogated for analysis of stress conditions before converter shut-down.
The BMR350 is in the standard quarter-brick format, measuring 58.4 x 36.8mm footprint and just 12mm, which includes the integrated baseplate with its threaded fixing holes. Terminations are via through-hole pins, suitable for pin-in-paste reflow, wave or manual soldering and positions are compatible with similar products on the market.
The product will be available in OEM quantities in the end of quarter 1/2022 and more variants will follow during 2022.
Flex Power Modules, a Flex business, manufactures scalable DC/DC power converters primarily serving the data processing, communications, industrial and transportation markets. Its portfolio includes a range of both isolated and non-isolated solutions, digitally-enabled DC/DC converters, including PMBus compatibility and the Flex Power Designer software.
