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Home » NEWEST Products » New by Manufacturer » Ericsson Power Modules » BMR456 & BMR457 Bus Converters - Ericsson
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Ericsson BMR456 & BMR457 Bus Converters

Ericsson BMR456 & BMR457 DC-DC Advanced Bus Converters (ABC) can reduce board power consumption by 3 to 10%. Both modules have the ability for the output voltage to be adjusted via PMBus commands or the preset profiles. The power modules were awarded the 2012 Product of the Year by Electronic Products Magazine for their ability to control intermediate bus voltage to deliver high efficiency and significant energy savings. BMR456 and BMR457 Advanced Bus Converters from Ericsson can reduce board power consumption by 3 to 10%, depending on the board applications. Both modules feature Ericsson DC-DC Energy Optimizer firmware for power consumption reduction. The quarter-brick BMR456 output voltage can be adjusted within an operation range of 13.0V to 8.2V. The output voltage of the smaller eighth-brick BMR457 delivers 13.2V to 8.2V and can be adjusted down to 6.9V.


BMR456 Features
  • Advanced Bus Converter Industry standard Quarterbrick with digital PMBus interface
    57.9 x 36.8 x 11.3mm (2.28 x 1.45 x 0.445in)
  • Optional industry standard 5-pins for intermediate bus architectures
  • Industry-leading Power Density for Telecom and Datacom 127-141W / sq. in
  • Ericsson DC/DC Energy Optimizer built-in
  • High efficiency, typ. 96.4% at half load, 12Vout
  • Fully regulated Advanced Bus Converter from 36-75Vin
  • 2250 Vdc input to output isolation
  • Fast Feed forward regulation to manage line transients
  • Optional baseplate for high temperature applications
  • Droop Load Sharing with 10% current share accuracy
  • Optional high capacitive load up to 15mF
  • PMBus Revision 1.2 compliant
  • 2.9 million hours MTBF
  • ISO 9001/14001 certified supplier

BMR457 Features
  • Advanced Bus Converter Industry standard Eighth-brick with digital PMBus interface
    8.4 x 22.7 x 10.2mm (2.30 x 0.89 x 0.40in)
  • Optional industry standard 5-pins for intermediate bus architectures
  • Industry-leading Power Density for Telecom and Datacom 129-147W / sq. in
  • Ericsson DC/DC Energy Optimizer built-in
  • High efficiency, typ. 95.2% at half load, 12 Vout
  • Fully regulated Advanced Bus Converter from 36-75Vin
  • 2250 Vdc input to output isolation
  • Fast Feed forward regulation to manage line transients
  • Optional baseplate for high temperature applications
  • Droop Load Sharing with 10% current share accuracy
  • PMBus Revision 1.2 compliant
  • 2.9 million hours MTBF
  • ISO 9001/14001 certified supplier


Power Management
  • Configurable soft start/stop
  • Precision delay and ramp-up
  • Voltage margining
  • Voltage/current/temperature monitoring
  • Configurable output voltage
  • Configurable fault response
  • Power good

 BMR456 Datasheet

Power Management
  • Configurable soft start/stop
  • Precision delay and ramp-up
  • Voltage margining
  • Voltage/current/temperature monitoring
  • Wide output voltage range
  • Configurable protection features

 BMR457 Datasheet

  • Ericsson Power Modules
  • Power