BMR353

The BMR353 is a non-isolated digital Intermediate Bus Converter (IBC) with PMBus^® interface. The device delivers up to 860 W (72 A) of continuous power at efficiency levels of up to 97.8% (measured at half load) in an industry standard eighth brick measuring 58.4 x 22.7 x 12.8 mm (2.3 x 0.89 x 0.504 in) with a flat baseplate which enables simplified conduction cooling to the customers’ heatsink or cold plate. Peak power delivery of up to 1200 W (100 A) is available for <0.5s.

The input voltage range is 40–60 V which is suitable for 48/54 V applications such as those found in Data Centers, High Performance Computing and Cloud Computing applications for example, and the fully regulated output voltage of 12.2 V nominal (adjustable from 8–13.2 V) makes it suitable to be used to power downstream Point of Load (PoL) converters and integrated power stages such as the BMR510, as well as powering circuitry that needs a tightly regulated output.

Key Benefits

The BMR353 offers another alternative solution to Flex Power Modules’ customers when choosing an IBC for systems transitioning from legacy 12 V feeds to a 48 V feed. The fully regulated output and industry standard design makes it suitable for a wide variety of applications.

The BMR353 includes an Event Data Recorder feature (also known as a “Black Box”), which automatically stores essential operational condition information to a non-volatile memory in case of a fault/shutdown or catastrophic failure, which is hugely beneficial with fault diagnosis and failure analysis since it can be interrogated via the PMBus^® interface.

The BMR353 also includes over-voltage, under-voltage, over-current and over-temperature protection functions. As with all Flex Power Modules’ DC/DC converters, it complies with IEC/EN/UL 62368-1 safety standards.

Comprehensive protection features including over‑voltage, under‑voltage, over‑current, and over‑temperature are built in as standard. Like all Flex Power Modules DC/DC solutions, the BMR353 meets IEC/EN/UL 62368‑1 safety requirements.

For system‑level optimization, monitoring, and control, the BMR353 provides full PMBus® digital functionality and is fully supported by the Flex Power Designer software suite.