Electronics Weekly
Called, BMR314 product, the task was made slightly easier by it being non-isolated, and having a fixed conversion ratio – of 4:1 – turning 38 to 60Vdc (68Vpeak) ratiometrically into for 9.5 to 15Vdc.
“Featuring a controller developed by Flex in conjunction with Onsemi, BMR314 is targeted at applications such as powering point-of-load converters in AI and datacom centers where high peak loads can occur.”
Peak capabilities are 1.5kW and 70A.
Efficiency can be as high as 97.4%, and the package optimized for cold wall cooling.
Protections include over-temperature, input under-voltage, output over-current, output over-voltage and output short-circuit.
Control and monitoring are provided through a PMBus interface, and Flex Power Designer software is available for configuration, performance simulation and monitoring.
Operation is across -20 to +125°C for a specified hot spot location and a timed warning and shut-down with over-temperature are provided.
MTBF is 7.49 million hours (Telcordia SR-332 issue 4 method 1 at +40°C)
“The product meets the safety requirements of IEC/EN/UL 62368-1 for non-isolated converters and meets ‘Class B’ conducted EMI limits to standards EN 55032/CISPR 32/FCC part 15J with a simple external filter,” said flex.
Samples are available, and production is scheduled for Q4 this year.
The BMR314 product page can be found here
A year ago, the company revealed a 3kW peak converter in a similar package, the BMR313.
