The BMR350 is a quarter-brick, non-isolated DC/DC converter rated at 860W continuous and 1200W peak power. It can be used as an intermediate bus converter for powering processors and ASICs with peak power demands. The product features an input of 40 to 60V (80V/100ms) and a fully regulated output of 12V at 100A maximum, adjustable from eight to 13.2V.

The transformer-coupled, non-isolated topology reduces component count and current stress and yields an efficiency level peaking at less than 97.8% at half load  48V input voltage. Derating is characterised by 3D thermal data graphs which specify available output power for given real-world pin and baseplate temperatures up to 100°C, with the user’s airflow rate. This enables maximum power to be extracted without stress to the converter, confirms the company.

There is also an option for active current sharing between paralleled modules, for higher power levels. The BMR350 meets EMI standard EN 55032/FCC part 15J Class B with a recommended external filter.

There is output over-voltage, over-current and module over-temperature protection and a PMBus interface provides remote control and monitoring. It is 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 a standard quarter brick format with dimensions of 58.4 x 36.8mm footprint and a height of 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.

The converter will be available Q1 2022, with more variants to follow during the year, says the company.