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1/8 brick power module suits 5V bus voltage apps

Posted: 19 Mar 2010 ?? ?Print Version ?Bookmark and Share

Keywords:power module? DC/DC? resistor?

Ericsson Power Modules is offering a 1/8 brick power module designed for 5V intermediate bus voltages and other applications requiring a tightly regulated 5V supply.

The BMR454 0002/004 is the latest variant of its 3E digitally controlled, PMBus-compliant, BMR454 DC/DC module that was launched last year. The BMR454 0002/004 employs the company's firmware-specific and dynamic dead-time optimization technology, enabling it to yield a typical efficiency of 94 percent at 50 percent load and 93.5 percent at 100 percent load.

Ericsson's BMR454 0002/004 delivers 38A at 5V, or a maximum output power of 190W across its operational range of 36V to 75V.

To minimize power losses at application level, the output voltage through the PMBus can be dynamically widely adjusted in the range of 3.0 to 6.7V, accommodating intermediate bus voltages to the most optimized condition required by point-of-load, FPGA, ASIC and others, without unwanted energy losses in the conversion process.

For fixed voltage applications, the BMR454 0002/004's output voltage can be set externally by an additional resistor, and a pre-trimmed 3.3V output version, BMR454 0002/003 is also available. This version delivers 3.3V/40A, 132W.

Offering a power density figure of more than 14W/cm? (93W/in?), the BMR454 is pin compatible with the quarter-brick BMR453 (5V output version coming soon), making it simple for designers to upgrade to higher power when upgrading boards with new functionalities.

The BMR454 0002/004 is aimed at 48V information and communication technology applications such as radio base stations, servers, routers and a broad range of systems powered by 48V DC migrating to a 5V intermediate bus voltage, or straightforward conversion from 48V system bus voltage to load..

Pricing in OEM quantities is $37 per unit.

- Ismini Scouras

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