Ericsson BMR457 series

    Digital 1/8 Brick 251-300W

    The BMR457 power modules feature unprecedented output characteristics including tight regulation, a wide output range ready to power dynamic bus architectures, high efficiency flat curve from low-load to high-load and built-in Ericsson DC/DC Energy Optimizer.

    Key Features

    This series builds on new technology and adds benefits such as an optional communication interface (PMBus). Available with optional baseplate.

    Input: 36-75 V, 40-60V
    Output:  Adjustable Vout range 6.9 – 13.2 V
    Output Power: up to 25 A / 300 W

    • Advanced Bus Converter Industry-standard Eighth-brick with digital PMBus Interface
    • Architects of Modern Power™ ABC-qbAMP™ Compliant
    • PMBus Revision 1.2 compliant
    • 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 36-75 V
    • +/- 2% output voltage tolerance band over entire Vin range 36-75V
    • Fast Feed forward regulation to manage line transients
    • Low Profile with max height 10.2 mm (0.40 in)
    • Optional Baseplate for high temperature applications
    • Droop Load Sharing for 10% tolerance over entire Vin range36 - 75V
    • 2250Vdc input to output isolation
    • 2.9 Million hours MTBF

    Product Program

    36-75 V Input:

    Vout (V)Iout (A)Pout (W)Part No 
    1222264BMR457 0004/001 
    1222251BMR457 0007/013Droop Load Sharing
    12.4522261BMR457 0007/014Droop Load Sharing


    40-60 V Input:

    Vout (V)Iout (A)Pout (W)Part No 
    1225300BMR457 0000/002 
    1225285BMR457 0011/016Droop Load Sharing
    12.4525296BMR457 0011/017Droop Load Sharing


    Mechanical Data

    Size (LxWxH):

    58.4 x 22.7 x 10.2 mm (2.30 x 0.89 x 0.40 in)