E
SEC/S Kevin Zhou
EZHIXZH
Approved
Ericsson Internal
TABLE OF SPECIFICATION
PRODUCT CONTENTS
No.
1 (2)
(5)
Prepared (also subject responsible if other)
BMR457 series
SEC/S (Julia Zhou
SEC/D Kevin You)
Fully
regulated Advanced
Bus
Converters
2015-05-13
2012-08-24
Input 36-75 V, Output up to
25
A /
300
W
Key Features
Checked
Date
1/1301- BMR 457 Uen
00152-FGC1011835
Technical Specification
1/28701-FGC
101 1835
revD
May
2015
© Ericsson AB
Rev
Reference
C
Advanced Bus Converter Industry standard Eighth-brick
with digital PMBus interface
58.4 x 22.7 x 10.2 mm (2.30 x 0.89 x 0.40 in.)
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
Wide output voltage range
Configurable protection features
Safety Approvals
Design for Environment
Meets requirements in high-
temperature lead-free soldering
processes
Contents
Ordering Information
General Information
Safety Specification
Absolute Maximum Ratings
Electrical Specification
12 V, 22 A / 264 W (36-75Vin)
12 V, 25 A / 300 W (40-60Vin)
12.45 V, 22 A / 261 W (36-75Vin)
12.45 V, 25 A / 296 W (40-60Vin)
EMC Specification
Operating Information
Thermal Consideration
Connections
PMBus Interface
Mechanical Information
Soldering Information
Delivery Information
Product Qualification Specification
............................................................. 2
............................................................. 2
............................................................. 4
............................................................. 5
BMR 457 0004/001............................... 7
BMR 457 0000/002............................. 11
BMR 457 0007/014............................. 15
BMR 457 0011/017............................. 18
........................................................... 21
........................................................... 22
........................................................... 25
........................................................... 26
........................................................... 27
........................................................... 30
........................................................... 33
........................................................... 34
........................................................... 36
E
EZHIXZH
Approved
Ericsson Internal
PRODUCT SPECIFICATION
No.
2 (5)
Prepared (also subject responsible if other)
BMR457 series
SEC/D (Julia You)
Fully
regulated Advanced
Bus
Converters
2015-05-13
Input 36-75 V, Output up to
25
A /
300
W
Ordering Information
Product program
BMR4570004/001
BMR4570007/013
BMR4570007/014
BMR4570000/002
BMR4570011/016
BMR4570011/017
Vin
36 – 75
36 – 75
36 – 75
40 – 60
40 - 60
40 - 60
Output
12 V / 22 A, 264 W
12 V / 22 A, 251 W
12.45 V / 22 A, 261 W
12 V / 25 A, 300 W
12 V / 25 A, 285 W
12.45 V / 25 A, 296 W
Checked
Date
1/1301- BMR 457 Uen
Technical Specification
Rev
Reference
2
1/28701-FGC
101 1835
revD
May
2015
© Ericsson AB
002 = 12 V Standard configuration for 40-60
Vin, n
3
n
4
= 00 or 01
008 = 12 V with positive RC logic configuration
for 36-75 Vin, n
3
n
4
= 04 or 05
009 = 12 V with positive RC logic configuration
for 40-60 Vin, n
3
n
4
= 00 or 01
013 = 12 V with 0.6 V droop load sharing
function configuration (36-75 Vin, n
3
n
4
= 06 or
07)
014 = 12.45 V with 0.6V droop load sharing
function configuration (36-75 Vin, n
3
n
4
= 06 or
07)
016 = 12 V with 0.6 V droop load sharing
function configuration (40-60 Vin, n
3
n
4
= 11 or
12)
017 = 12.45 V with 0.6V droop load sharing
function configuration (40-60 Vin, n
3
n
4
= 11 or
12)
C
Product Number and Packaging
BMR457 n
1
n
2
n
3
n
4
/n
5
n
6
n
7
Options
Mechanical pin
option
Mechanical
option
Hardware option
Configuration file
Optional
designation
n
1
Description
n
1
x
n
2
n
3
n
4
/
/
n
5
n
6
n
7
xxx = Application Specific Configuration
Packaging
25 converters(through hole pin)/tray, PE foam
dissipative
20 converters(surface mount pin)/tray,
Antistatic PPE
x
x
x
/
/
/
x
x
x
Example: Product number BMR4572004/001 equals an Through hole mount
lead length 3.69 mm (cut), open frame, digital interface with 12 V standard
configuration variant.
Note 1: No baseplate option
For application specific configurations contact your local Ericsson Power
Modules sales representative.
0 = Standard pin length 5.33 mm
note 1
1 = Surface mount option
2 = Lead length 3.69 mm(0.145 in.) (cut)
3 = Lead length 4.57 mm(0.180 in.) (cut)
4 = Lead length 2.79 mm(0.110 in.) (cut)
0 = Open frame
1 = Baseplate
00 = 40-60 Vin, 6.9-13.2 Vout adjusted, with
digital interface
01 = 40-60 Vin, 6.9-13.2 Vout adjusted, without
digital interface
04 = 36-75 Vin, 6.9-13.2 Vout adjusted, with
digital interface
05 = 36-75 Vin, 6.9-13.2 Vout adjusted, without
digital interface
06 = 36-75 Vin, 6.9-13.2 Vout adjusted, Droop
load sharing function for parallel operation,
without digital interface
07 = 36-75 Vin, 6.9-13.2 Vout adjusted, Droop
load sharing function for parallel operation, with
digital interface
11 = 40-60 Vin, 6.9-13.2 Vout adjusted, Droop
load sharing function for parallel operation, with
digital interface
12 = 40-60 Vin, 6.9-13.2 Vout adjusted, Droop
load sharing function for parallel operation,
without digital interface
n
2
n
3
n
4
General Information
Reliability
The failure rate (
) and mean time between failures
(MTBF= 1/
) is calculated at max output power and an
operating ambient temperature (T
A
) of +40°C. Ericsson
Power Modules uses Telcordia SR-332 Issue 2 Method 1 to
calculate the mean steady-state failure rate and standard
deviation (
).
Telcordia SR-332 Issue 2 also provides techniques to
estimate the upper confidence levels of failure rates based
on the mean and standard deviation.
Mean steady-state failure rate,
421 n Failures/h
Std. deviation,
60.9 nFailures/h
MTBF (mean value) for the BMR457 series = 2.91 Mh.
MTBF at 90% confidence level = 2.37 Mh
Compatibility with RoHS requirements
The products are compatible with the relevant clauses and
requirements of the RoHS directive 2011/65/EU and have a
maximum concentration value of 0.1% by weight in
homogeneous materials for lead, mercury, hexavalent
chromium, PBB and PBDE and of 0.01% by weight in
n
5
n
6
n
7
001 = 12 V Standard configuration for 36-75
Vin, n
3
n
4
= 04 or 05
E
EZHIXZH
Approved
Ericsson Internal
PRODUCT SPECIFICATION
No.
3 (5)
Prepared (also subject responsible if other)
BMR457 series
SEC/D (Julia You)
Fully
regulated Advanced
Bus
Converters
2015-05-13
Input 36-75 V, Output up to
25
A /
300
W
homogeneous materials for cadmium.
Exemptions in the RoHS directive utilized in Ericsson
Power Modules products are found in the Statement of
Compliance document.
Ericsson Power Modules fulfills and will continuously fulfill
all its obligations under regulation (EC) No 1907/2006
concerning the registration, evaluation, authorization and
restriction of chemicals (REACH) as they enter into force
and is through product materials declarations preparing for
the obligations to communicate information on substances
in the products.
Quality Statement
The products are designed and manufactured in an
industrial environment where quality systems and methods
like ISO 9000, Six Sigma, and SPC are intensively in use to
boost the continuous improvements strategy. Infant
mortality or early failures in the products are screened out
and they are subjected to an ATE-based final test.
Conservative design rules, design reviews and product
qualifications, plus the high competence of an engaged
work force, contribute to the high quality of the products.
Warranty
Warranty period and conditions are defined in Ericsson
Power Modules General Terms and Conditions of Sale.
Limitation of Liability
Ericsson Power Modules does not make any other
warranties, expressed or implied including any warranty of
merchantability or fitness for a particular purpose (including,
but not limited to, use in life support applications, where
malfunctions of product can cause injury to a person’s
health or life).
© Ericsson AB 2015
The information and specifications in this technical
specification is believed to be correct at the time of
publication. However, no liability is accepted for
inaccuracies, printing errors or for any consequences
thereof. Ericsson AB reserves the right to change the
contents of this technical specification at any time without
prior notice.
Checked
Date
1/1301- BMR 457 Uen
Technical Specification
Rev
Reference
3
1/28701-FGC
101 1835
revD
May
2015
© Ericsson AB
C
E
EZHIXZH
Approved
Ericsson Internal
PRODUCT SPECIFICATION
No.
4 (5)
Prepared (also subject responsible if other)
BMR457 series
SEC/D (Julia You)
Fully
regulated Advanced
Bus
Converters
2015-05-13
Input 36-75 V, Output up to
25
A /
300
W
Safety Specification
General information
Ericsson Power Modules DC/DC converters and DC/DC
regulators are designed in accordance with the safety
standards IEC 60950-1, EN 60950-1 and UL 60950-1
Safety of Information Technology Equipment.
IEC/EN/UL 60950-1 contains requirements to prevent injury
or damage due to the following hazards:
Electrical shock
Energy hazards
Fire
Mechanical and heat hazards
Radiation hazards
Chemical hazards
Checked
Date
1/1301- BMR 457 Uen
Technical Specification
Rev
Reference
4
1/28701-FGC
101 1835
revD
May
2015
© Ericsson AB
C
circuit on the input source, this fuse will provide the
following functions:
Isolate the fault from the input power source so as not
to affect the operation of other parts of the system
Protect the distribution wiring from excessive current
and power loss thus preventing hazardous overheating
The DC/DC converter output is considered as safety extra
low voltage (SELV) if one of the following conditions is met:
The input source has double or reinforced insulation
from the AC mains according to IEC/EN/UL 60950-1
The input source has basic or supplementary insulation
from the AC mains and the input of the DC/DC
converter is maximum 60 Vdc and connected to
protective earth according to IEC/EN/UL 60950-1
The input source has basic or supplementary insulation
from the AC mains and the DC/DC converter output is
connected to protective earth according to
IEC/EN/UL 60950-1
Non - isolated DC/DC regulators
The DC/DC regulator output is SELV if the input source
meets the requirements for SELV circuits according to
IEC/EN/UL 60950-1.
On-board DC/DC converters and DC/DC regulators are
defined as component power supplies. As components
they cannot fully comply with the provisions of any safety
requirements without “conditions of acceptability”.
Clearance between conductors and between conductive
parts of the component power supply and conductors on
the board in the final product must meet the applicable
safety requirements. Certain conditions of acceptability
apply for component power supplies with limited stand-off
(see Mechanical Information for further information). It is
the responsibility of the installer to ensure that the final
product housing these components complies with the
requirements of all applicable safety standards and
regulations for the final product.
Component power supplies for general use should comply
with the requirements in IEC/EN/UL 60950-1
Safety of
Information Technology Equipment.
Product related
standards, e.g. IEEE 802.3af
Power over Ethernet,
and
ETS-300132-2
Power interface at the input to telecom
equipment, operated by direct current (dc)
are based on
IEC/EN/UL 60950-1 with regards to safety.
Ericsson Power Modules DC/DC converters and DC/DC
regulators are UL 60950-1 recognized and certified in
accordance with EN 60950-1. The flammability rating for all
construction parts of the products meet requirements for
V-0 class material according to IEC 60695-11-10,
Fire
hazard testing, test flames
– 50 W horizontal and vertical
flame test methods.
Isolated DC/DC converters
Galvanic isolation between input and output is verified in an
electric strength test and the isolation voltage (V
iso
) meets
the voltage strength requirement for basic insulation
according to IEC/EN/UL 60950-1.
It is recommended to use a slow blow fuse at the input of
each DC/DC converter. If an input filter is used in the circuit
the fuse should be placed in front of the input filter. In the
rare event of a component problem that imposes a short
E
Technical Specification
BMR457 series
Fully
regulated Advanced
Bus
Converters
Input 36-75 V, Output up to
25
A /
300
W
Absolute Maximum Ratings
Characteristics
T
P1
T
S
V
I
C
out
V
iso
V
iso
V
iso
V
tr
V
RC
V Logic I/O
Operating Temperature (see Thermal Consideration section)
Storage temperature
Input voltage
Output capacitance
Isolation voltage (input to output test voltage)
Isolation voltage (input to baseplate qualification test voltage)
Isolation voltage (baseplate to output qualification test voltage)
Input voltage transient according to ETSI EN 300 132-2 and Telcordia GR-1089-
CORE
Remote Control pin voltage
(see Operating Information section)
SALERT, CTRL, SCL, SDA, SA0, SA1
-0.3
-0.3
© Ericsson AB
5
1/28701-FGC
101 1835
revD
May
2015
min
-40
-55
-0.5
100
typ
max
+125
+125
+80
+65*
2250
750
750
+100
+80*
18
3.6
Unit
°C
°C
V
µF
Vdc
Vdc
Vdc
V
V
V
Stress in excess of Absolute Maximum Ratings may cause permanent damage. Absolute Maximum Ratings, sometimes ref erred to as no destruction limits, are
normally tested with one parameter at a time exceeding the limits in the Electrical Specif ication. If exposed to stress abov e these limits, f unction and perf ormance
may degrade in an unspecif ied manner.
*) Apply f or the narrow input v ersion V
I
= 40-60 V.
Fundamental Circuit Diagram
+IN
Driver
+OUT
-OUT
-IN
Auxillary
Supply
Driver
Control
RC
RC isolation
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