Quarter brick isolated DC-DC converter for datacom applications

Flex Power Modules has released a new device in its BMR491 series of high-density DC-DC converters with built-in digital interfaces. The new converter can produce 2450W peak power for periods of up to one second, with a constant output power rating of up to 1540W, claiming that this makes it the highest power density digital DC-DC isolated converter currently available.

The device functions over an input voltage range of 48V to 60V and provides a nominal 12V output, making it appropriate for data centre applications. Efficiency is 97.5% at 48Vin at half load, and the device can offer output current of up to 205A.

The converter is provided in an industry-standard low-profile quarter-brick format, measuring 58.4mm x 36.8mm x 14mm (2.30" x 1.45" x 0.55") with baseplate, and is also provided with an integrated heatsink with a height profile of 19mm. The converter has an operational temperature range of -40C to +125C.

The device employs the company’s proprietary hybrid regulated ratio technology, which allows it to provide extended power capabilities, as well as the efficiency and resilience to voltage transients that would more commonly be envisioned from a fixed-ratio converter.

As with all the company's converters, the new device complies with IEC/EN/UL 62368-1 safety standards. Input to output isolation is 1500V.

A digital interface is offered in either 4 or 7-pin DOSA standard, and the device is supported by the Flex Power Designer software tool.