BMR458 Digital Quarter-Brick Advanced Bus Converter

Flex Power Modules' BMR458 is designed mainly for ICT applications

Image of Flex Power Modules' BMR458 Digital Quarter-Brick Advanced Bus Converter Flex Power Modules' BMR458 is available in two input voltage variants: one for the telecom market with a typical input range from 36 V to 75 V and another for the datacom market with an input range of 40 V to 60 V. Both variants are designed to meet the demands of high-end and high-power applications based on intermediate bus conversion (IBC) and dynamic bus voltage (DBV) architectures. The units output current monitoring of ±1 A delivers highly accurate system monitoring capability.

The module is ideal for high-power applications that are powered by multi-cell batteries or rectifiers commonly used in the ICT industry and employ IBC or DBV architectures.

The BMR458 comes with a host of features. The module delivers an output up to 650 W, thereby reducing the number of required modules in very high power applications and highly accurate current sharing, as well as active- or droop-current sharing. Other key features including dynamic load compensation, adjustable VOUT, snapshot parameter capture, and a PMBus v1.3 interface.

Key electrical characteristics of the module include high efficiency of up to 96.6% at half load and 96.3% at full load, maximum current output of 54.2 A, tightly regulated 12 V output (±2 mV, typical) across the 40 V to 60 V input voltage range, output current monitoring of ±1 A to enable highly accurate system monitoring capability, and a fast transient recovery time of only 1 ms.

Further specifications include an MTBF of 8.2 million hours and I/O functional isolation of 2250 VDC, which meets the latest IEC/EN/UL60905 safety standard.

  • High efficiency up to 96.6%
  • High power up to 650 W
  • Advance bus converter with optional PMBus communication pins
  • Active- or droop-current sharing
  • Output current monitoring of ±1 A
  • Baseplate version available
  • Adjustable VOUT
  • Supporting tools: Flex Power Designer tool

Application Areas:

  • Information and communication technology (ICT) applications, including datacom, telecom, and server/storage systems

BMR458 Digital Quarter-Brick Advanced Bus Converter

ImageManufacturer Part NumberDescriptionVoltage - Input (Min)Voltage - Input (Max)Voltage - Output 1Available QuantityView Details
36 - 75; 12; 46; 552BMR4580002/00336 - 75; 12; 46; 55236V75V12V37 - ImmediateView Details
36 - 75; 12.45; 46; 552BMR4580002/01436 - 75; 12.45; 46; 55236V75V12.45V40 - ImmediateView Details
40 - 60; 12; 54.2; 650BMR4580011/00240 - 60; 12; 54.2; 65040V60V12V35 - ImmediateView Details
40 - 60; 12.45; 54.2; 650BMR4580011/01740 - 60; 12.45; 54.2; 65040V60V12.45V40 - ImmediateView Details
36 - 75; 12; 46; 552BMR4580102/00336 - 75; 12; 46; 55236V75V12V80 - ImmediateView Details

IBC Test Board

ImageManufacturer Part NumberDescriptionBoard TypeSupplied ContentsUtilized IC / PartAvailable QuantityView Details
IBC TEST BOARDROA1283835IBC TEST BOARDPartially PopulatedBoard(s)BMR453, BMR454, BMR456, BMR457, BMR4585 - ImmediateView Details
Published: 2020-03-25