Advanced bus converter series expanded with 1,300W version

Packaged in the industry standard quarter brick format measuring 58.4x36.8x14.48mm, the BMR48001x6/005 achieves a power density of more than 680W/in³. This is achieved in part by optimising its operation across the input voltage range of 45 to 60V to produce a regulated 12V output, employing the company’s patented Hybrid Regulated Ratio (HRR) technology between 51 and 45V. 

Over 15 patents have been filed in relation to the BMR480 series, many of which are directly related to efficiency improvements and design techniques for lowering power dissipation. As a result, the DC/DC converter is able to offer 97.4% efficiency when operating from a 53V input voltage and delivering 100% output current. 

Compared with other members of the BMR480 series, the BMR48001x6/005 delivers around 0.5% higher efficiency at 1,000W, making it a viable upgrade for existing installations, as well as an efficient solution for new designs. 

Olle Hellgren, Head of Business and Product Management at Flex Power Modules, explained: “Annualised over 24/7 operation, an improvement of 0.5% equates to over 40kWh power reduction for every module in the system. Depending on the cooling solutions employed throughout a facility, a typical rule of thumb might suggest that every 1W of power wasted as heat typically requires 0.5W of energy to cool, so the total power saved is 60kWh per year from every module. If we multiply that saving by the number of blade servers in a typical data centre, the benefits add up significantly.” 

The BMR480 series is suited for intermediate bus conversion (IBC), dynamic bus voltage (DBV) and distributed power architectures (DPAs), and is designed to power high end and high power applications supplied by front end AC/DC rectifiers, typically favoured by the ICT sector. Networking and telecom equipment, industrial equipment, and server and storage applications can also benefit from the efficiency and reliability of the BMR480 series.

The module comes as standard fitted with a baseplate, which can be connected to a heatsink or cold plate for use in more challenging thermal environments. Even when operating in high ambient temperature environments with limited airflow, the efficiency of the BMR48001x6/005 helps to minimise power dissipation, and maximise system reliability.

Dynamic load compensation and support for the latest version of the PMBus communication specification are complemented by the Flex Power Designer software tool, giving power architects total flexibility during system design and aiming to enable them to deliver power systems with the highest energy efficiency. 

Other product features of the BMR48001x6/005 include a DOSA standard seven pin digital header, 1,500V input/output isolation, monotonic startup, remote control, and a range of protection capabilities including over temperature, output short circuit and output over voltage.

The new module has been designed and manufactured by Flex Power Modules with the aim to deliver the levels of quality and confidence that are required by power system designers to develop long-term and high-performance reliable platforms.