Ericsson BMR456 Series User manual

Ericsson Internal
PRODUCT SPECIFICATION 1 (5)
Prepared (also subject responsible if other) No.
SEC/S Kevin Zhou 1/1301- BMR 456 Uen
Approved Checked Date Rev Reference
SEC/S Kevin Zhou 2013-01-24 D
Key Features
 Advanced Bus Converter Industry standard Quarter-
brick with digital PMBus interface
57.9 x 36.8 x 11.3 mm (2.28 x 1.45 x 0.445 in.)
 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, 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
 Optional high capacitive load up to 15mF
 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
Safety Approvals Design for Environment
Meets requirements in high-
temperature lead-free soldering
processes.
Ericsson Internal
TABLE OF CONTENTS 1 (2)
Prepared (also subject responsible if other) No.
SEC/S Kevin Zhou 00152-FGC1011823
Approved Checked Date Rev Reference
SEC/S Kevin Zhou 2013-01-24 D
Contents
Ordering Information ............................................................. 2
General Information ............................................................. 2
Safety Specification ............................................................. 4
Absolute Maximum Ratings ............................................................. 5
Electrical Specification
9 V, 35 A / 351 W (36-75Vin) BMR 456 0004/004............................... 7
9 V, 39 A / 351 W (36-60Vin) BMR 456 0000/003............................. 11
12 V, 35 A / 420 W (36-75Vin) BMR 456 0004/001............................. 15
12 V, 35 A / 420 W (36-75Vin, high cap load) BMR 456 0004/018............................. 19
12 V, 39 A / 468 W (40-60Vin) BMR 456 0000/002............................. 23
12.45 V, 35 A / 415 W (36-75Vin) BMR 456 0007/014............................. 27
12.45 V, 39 A / 462 W (40-60Vin) BMR 456 0011/017............................. 30
EMC Specification ........................................................... 33
Operating Information ........................................................... 34
Thermal Consideration ........................................................... 38
Connections ........................................................... 39
PMBus Interface ........................................................... 40
Mechanical Information ........................................................... 43
Soldering Information ........................................................... 46
Delivery Information ........................................................... 47
Product Qualification Specification ........................................................... 49
E
BMR456 series Fully regulated Advanced Bus Converters
Input 36-75 V, Output up to 39A /468W
1/28701-FGC 101 1823 revDFebruary 2013
© Ericsson AB
Technical Specification

Ericsson Internal
PRODUCT SPECIFICATION 2 (5)
Prepared (also subject responsible if other) No.
SEC/S Kevin Zhou 1/1301- BMR 456 Uen
Approved Checked Date Rev Reference
SEC/S Kevin Zhou 2013-01-24 D
Ordering Information
Product program Vin Output
BMR456 0004/004 36 - 75 9 V / 35 A, 315 W
BMR456 0004/001 36 - 75 12 V / 35 A, 420 W
BMR456 0004/018 36 - 75 12 V / 35 A, 420 W
BMR456 0007/013 36 - 75 12 V / 35 A, 400 W
BMR456 0007/014 36 - 75 12.45 V / 35 A, 415 W
BMR456 0000/003 36 - 60 9 V / 39 A, 351 W
BMR456 0000/002 40 - 60 12 V / 39 A, 468 W
BMR456 0011/016 40 - 60 12 V / 39 A, 445 W
BMR456 0011/017 40 - 60 12.45 V / 39 A, 462 W
Product Number and Packaging
BMR456 n1 n2 n3 n4 / n5 n6 n7
Mechanical
pin option x /
Mechanical
option x /
Hardware option x x /
Configuration file / x x x
Optional
designation
Description
n1
n2
n3 n4
0 = Standard pin length 5.33 mm(0.210 in.)
1 = Surface mount option note 1
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
2 = Baseplate with GND-pin
00 = 40-60 Vin, 4-13.2 Vout adjusted, with
digital interface
01 = 40-60 Vin, 4-13.2 Vout adjusted, without
digital interface
04 = 36-75 Vin, 4-13.2 Vout adjusted, with
digital interface
05 = 36-75 Vin, 4-13.2 Vout adjusted, without
digital interface
06 = 36-75 Vin, 4-13.2 Vout adjusted, Droop
load sharing function for parallel operation,
without digital interface
07 = 36-75 Vin, 4-13.2 Vout adjusted, Droop
load sharing function for parallel operation, with
digital interface
11 = 40-60 Vin, 4-13.2 Vout adjusted, Droop
load sharing function for parallel operation, with
digital interface
12 = 40-60 Vin, 4-13.2 Vout adjusted, Droop
load sharing function for parallel operation,
without digital interface
n5 n6 n7
Packaging
001 = 12 V Standard configuration for 36-75
Vin, n3n4 = 04 or 05
002 = 12 V Standard configuration for 40-60
Vin, n3n4 = 00 or 01
003 = 9 V Standard configuration for 36-60 Vin,
n3n4 = 00 or 01
004 = 9 V Standard configuration for 36-60 Vin,
n3n4 = 04 or 05
008 = 12 V with positive RC logic configuration
for 36-75 Vin, n3n4 = 04 or 05
009 = 12 V with positive RC logic configuration
for 40-60 Vin, n3n4 = 00 or 01
013 = 12 V with 0.6 V droop load sharing
function configuration (36-75 Vin, n3n4 = 06 or
07)
014 = 12.45 V with 0.6V droop load sharing
function configuration (36-75 Vin, n3n4 = 06 or
07)
016 = 12 V with 0.6 V droop load sharing
function configuration (40-60 Vin, n3n4 = 11 or
12)
017 = 12.45 V with 0.6V droop load sharing
function configuration (40-60 Vin, n3n4 = 11 or
12)
018 = 12 V Standard configuration for
maximum 15mF capacitive load, 36-75 Vin,
n3n4 = 04 or 05
xxx = Application Specific Configuration
20 converters(through hole pin)/tray, PE foam
dissipative
20 converters(surface mount pin)/tray,
Antistatic PPE
Example: Product number BMR4562100/001 equals an Through hole mount
lead length 3.69 mm (cut), baseplate, 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.
General Information
Reliability
The failure rate () and mean time between failures
(MTBF= 1/) is calculated at max output power and an
operating ambient temperature (TA) 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, Std. deviation, 
425 nFailures/h 60.9 nFailures/h
MTBF (mean value) for the BMR456 series = 2.9 Mh.
MTBF at 90% confidence level = 2.4 Mh
E
BMR456 series Fully regulated Advanced Bus Converters
Input 36-75 V, Output up to 39A /468W
1/28701-FGC 101 1823 revDFebruary 2013
© Ericsson AB
Technical Specification
2

Ericsson Internal
PRODUCT SPECIFICATION 3 (5)
Prepared (also subject responsible if other) No.
SEC/S Kevin Zhou 1/1301- BMR 456 Uen
Approved Checked Date Rev Reference
SEC/S Kevin Zhou 2013-01-24 D
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
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 2013
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.
E
BMR456 series Fully regulated Advanced Bus Converters
Input 36-75 V, Output up to 39A /468W
1/28701-FGC 101 1823 revDFebruary 2013
© Ericsson AB
Technical Specification
3

Ericsson Internal
PRODUCT SPECIFICATION 4 (5)
Prepared (also subject responsible if other) No.
SEC/S Kevin Zhou 1/1301- BMR 456 Uen
Approved Checked Date Rev Reference
SEC/S Kevin Zhou 2013-01-24 D
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
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 (Viso) 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
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.
E
BMR456 series Fully regulated Advanced Bus Converters
Input 36-75 V, Output up to 39A /468W
1/28701-FGC 101 1823 revDFebruary 2013
© Ericsson AB
Technical Specification
4

Ericsson Internal
PRODUCT SPECIFICATION 1 (29)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 456 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZHIXZH 2013-02-06 E
Absolute Maximum Ratings
Characteristics min typ max Unit
TP1 Operating Temperature (see Thermal Consideration section) -40 +125 °C
TSStorage temperature -55 +125 °C
VIInput voltage -0.5
+80
+65*
V
Viso Isolation voltage (input to output test voltage), see note 1 2250 Vdc
Vtr Input voltage transient according to ETSI EN 300 132-2 and Telcordia GR-1089-
CORE
+100
+80* V
VRC Remote Control pin voltage -0.3 18 V
VLogic I/O SALERT, CTRL, SCL, SDA, SA0, SA1 -0.3 3.6 V
Stress in excess of Absolute Maximum Ratings may cause permanent damage. Absolute Maximum Ratings, sometimes referred to as no destruction limits, are
normally tested with one parameter at a time exceeding the limits of Output data or Electrical Characteristics. If exposed to stress above these limits, function and
performance may degrade in an unspecified manner.
Note 1: Isolation voltage (input/output to base-plate) max 750 Vdc.
*) Apply for the narrow input version VI= 40-60 V
Fundamental Circuit Diagram
-IN
+IN
+OUT
-OUT
Driver
Driver
Control
RC isolation
Auxillary
Supply
RC
E
BMR456 series Fully regulated Advanced Bus Converters
Input 36-75 V, Output up to 39A /468W
1/28701-FGC 101 1823 revDFebruary 2013
© Ericsson AB
Technical Specification
5

Ericsson Internal
PRODUCT SPECIFICATION 2 (29)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 456 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZHIXZH 2013-02-06 E
Functional Description
TP1, TP3 = -40 to +90ºC, VI= 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.
Typical values given at: TP1, TP3 = +25°C, VI= 53 V, max IO, unless otherwise specified under Conditions
Configuration File: 190 10-CDA 102 0314/001
Characteristics Conditions min typ max Unit
PMBus monitoring accuracy
VIN_READ Input voltage -2 ±0.2 2 %
VOUT_READ Output voltage VI= 53 V -1.0 ±0.1 1.0 %
IOUT_READ Output current VI= 53 V, 50-100% of max IO-6 ±0.15 6 %
IOUT_READ Output current VI= 53 V, 10% of max IO-0.6 - 0.6 A
TEMP_READ Temperature -5 ±3.5 5
ºC
Fault Protection Characteristics
Factory default - 33 - V
Setpoint accuracy -2 - 2 %
Factory default - 2 - V
Hysteresis Configurable via PMBus of
threshold range, Note 1 0 - - V
Input Under Voltage
Lockout,
UVLO
Delay - 300 - µs
Factory default - 0 - V
VOUT_UV_FAULT_LIMIT Configurable via PMBus, Note 1 0 - 16 V
Factory default - 15.6 - V
VOUT_OV_FAULT_LIMIT Configurable via PMBus, Note 1 VOUT - 16 V
(Output voltage)
Over/Under Voltage
Protection,
OVP/UVP
fault response time - 200 - µs
Setpoint accuracy Io -6 6 %
Factory default - 41 -
IOUT_OC_FAULT_LIMIT Configurable via PMBus, Note 1 0 - 100 A
Over Current
Protection,
OCP
fault response time - 200 - µs
Factory default - 125 -
OTP_FAULT_LIMIT Configurable via PMBus, Note 1 -50 125
Factory default 10
OTP hysteresis Configurable via PMBus, Note 1 0 125
C
Over Temperature
Protection,
OTP
fault response time - 300 - µs
Logic Input/Output Characteristics
Logic input low (VIL) - - 1.1 V
Logic input high (VIH) CTRL, SA0, SA1, PG, SCL, SDA, 2.1 - - V
Logic output low (VOL) CTRL, PG, SALERT, SCL, SDA
IOL = 6 mA - - 0.25 V
Logic output high (VOH) CTRL, PG, SALERT, SCL, SDA
IOH = -6 mA 2.7 - - V
Bus free time T(BUF) Note 2 1.3 - µs
Note 1: See Operating Information section.
Note 2: PMBus timing parameters according to PMBus spec.
E
BMR456 series Fully regulated Advanced Bus Converters
Input 36-75 V, Output up to 39A /468W
1/28701-FGC 101 1823 revDFebruary 2013
© Ericsson AB
Technical Specification
6

Ericsson Internal
PRODUCT SPECIFICATION 3 (29)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 456 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZHIXZH 2013-02-06 E
9.0 V, 35 A / 315 W Electrical Specification BMR 456 0004/004
TP1, TP3 = -40 to +90ºC, VI= 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.
Typical values given at: TP1, TP3 = +25°C, VI = 53 V, max IO, unless otherwise specified under Conditions.
Additional CIn = 0.1 mF, Cout = 3.5 mF, Configuration File: 19010-CDA 102 0314/004
Characteristics Conditions min typ max Unit
VIInput voltage range 36 75 V
VIoff Turn-off input voltage Decreasing input voltage 32 33 34 V
VIon Turn-on input voltage Increasing input voltage 34 35 36 V
CIInternal input capacitance 18 μF
POOutput power 0 315 W
50% of max IO95.1
max IO94.3
50% of max IO, VI= 48 V 95.3
ηEfficiency
max IO, VI= 48 V 94.3
%
PdPower Dissipation max IO19.0 26.4 W
Pli Input idling power IO = 0 A, VI= 53 V 3.1 W
PRC Input standby power VI= 53 V (turned off with RC) 0.4 W
fsDefault switching frequency 0-100% of max IO133 140 147 kHz
VOi Output voltage initial setting and
accuracy TP1 = +25°C, VI= 53 V, IO = 35 A 8.91 9.0 9.09 V
Output adjust range See operating information 4.0 13.2 V
Output voltage tolerance band 0-100% of max IO8.82 9.18 V
Line regulation max IO8 24 mV
VO
Load regulation VI= 53 V, 1-100% of max IO25 40 mV
Vtr Load transient
voltage deviation ±0.4 V
ttr Load transient recovery time
VI = 53 V, Load step 25-75-25% of
max IO, di/dt = 1 A/μs
150 µs
trRamp-up time
(from 10−90% of VOi)8 ms
tsStart-up time
(from VIconnection to 90% of VOi)
10-100% of max IO,
TP1 = 25ºC, VI = 53 V
24 ms
max IO, 4.5 ms
tfVin shutdown fall time
(from VI off to 10% of VO) IO= 0 A, CO= 0 mF 7 s
RC start-up time max IO12 ms
max IO4.5 ms
tRC RC shutdown fall time
(from RC off to 10% of VO)IO= 0 A, CO= 0 mF 7 s
IOOutput current 0 35 A
Ilim Current limit threshold VO= 8.1 V, TP1, TP3 < max TP1, TP3 38 41 44 A
Isc Short circuit current TP1 = 25ºC, see Note 1 8 A
Cout Recommended Capacitive Load TP1 = 25ºC, see Note 2 0.1 3.5 6 mF
VOac Output ripple & noise See ripple & noise section,
max IO, see Note 3 50 110 mVp-p
OVP Over voltage protection TP1, TP3 = 25°C, VI = 53 V,
10-100% of max IO11.7 V
Sink current, see Note 4 See operating information 0.7 mA
RC Trigger level Decreasing / Increasing RC-voltage 2.6 / 2.9 V
Note 1: OCP in hic-up mode, RMS value.
Note 2: Low ESR-value
Note 3: Cout = 100 µF, external capacitance
Note 4: Sink current drawn by external device connected to the RC pin. Minimum sink current required guaranteeing activated RC function.
E
BMR456 series Fully regulated Advanced Bus Converters
Input 36-75 V, Output up to 39A /468W
1/28701-FGC 101 1823 revDFebruary 2013
© Ericsson AB
Technical Specification
7

Ericsson Internal
PRODUCT SPECIFICATION 4 (29)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 456 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZHIXZH 2013-02-06 E
Typical Characteristics
9.0 V, 35 A / 315 W BMR 456 0004/004
Efficiency Power Dissipation
75
80
85
90
95
100
0 5 10 15 20 25 30 35 [A]
[%]
36 V
48 V
53 V
75 V
0
5
10
15
20
25
0 5 10 15 20 25 30 35 [A]
[W]
36 V
48 V
53 V
75 V
Efficiency vs. load current and input voltage at TP1, TP3 = +25CDissipated power vs. load current and input voltage at
TP1, TP3 = +25°C
Output Characteristics Current Limit Characteristics
8.90
8.94
8.98
9.02
9.06
9.10
0 5 10 15 20 25 30 35 [A]
[V]
36 V
48 V
53 V
75 V
3.0
5.0
7.0
9.0
11.0
13.0
35 37 39 41 43 45 [A]
[V]
36 V
48 V
53 V
75 V
Output voltage vs. load current at TP1, TP3 = +25°C
Output voltage vs. load current at IO> max IO , TP1, TP3 = +25°C
E
BMR456 series Fully regulated Advanced Bus Converters
Input 36-75 V, Output up to 39A /468W
1/28701-FGC 101 1823 revDFebruary 2013
© Ericsson AB
Technical Specification
8

Ericsson Internal
PRODUCT SPECIFICATION 5 (29)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 456 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZHIXZH 2013-02-06 E
Typical Characteristics
9.0 V, 35 A / 315 W BMR 456 0004/004
Start-up Shut-down
Start-up enabled by connecting VIat:
TP1, TP3 = +25°C, VI= 53 V,
IO= 35 A resistive load.
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (5 ms/div.).
Shut-down enabled by disconnecting VIat:
TP1, TP3 = +25°C, VI= 53 V,
IO=35 A resistive load.
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (2 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
TP1, TP3 = +25°C, VI= 53 V,
IO= 35 A resistive load.
Trace: output voltage (50 mV/div.).
Time scale: (2 µs/div.). Output voltage response to load current step-change (8.75-26.25-8.75 A) at:
TP1, TP3 =+25°C, VI= 53 V, CO= 3.5 mF.
Top trace: output voltage (0.2 V/div.).
Bottom trace: output current (20 A/div.).
Time scale: (0.5 ms/div.).
Input Voltage Transient Response
Output voltage response to input voltage
transient at: TP1, TP3 = +25°C, VI= 36-75 V,
IO= 35 A resistive load, CO= 3.5 mF
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: (0.5 ms/div.).
E
BMR456 series Fully regulated Advanced Bus Converters
Input 36-75 V, Output up to 39A /468W
1/28701-FGC 101 1823 revDFebruary 2013
© Ericsson AB
Technical Specification
9

Ericsson Internal
PRODUCT SPECIFICATION 6 (29)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 456 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZHIXZH 2013-02-06 E
Typical Characteristics
9.0 V, 35 A / 315 W BMR 456 0004/004
Output Current Derating – Open frame
0
5
10
15
20
25
30
35
40
020406080100[°C]
[A]
3.0 m/s
2.0 m/s
1.5 m/s
1.0 m/s
0.5 m/s
Nat. Conv.
Available load current vs. ambient air temperature and airflow at
VI= 53 V. See Thermal Consideration section.
Output Current Derating – Base plate Thermal Resistance – Base plate
0
5
10
15
20
25
30
35
40
020406080100[°C]
[A]
3. 0 m/ s
2. 0 m/ s
1. 5 m/ s
1. 0 m/ s
0. 5 m/ s
Nat. Conv.
0
1
2
3
4
5
6
0.0 0.5 1.0 1.5 2.0 2.5 3.0 [m/s]
[°C/W]
Available load current vs. ambient air temperature and airflow at
VI= 53 V. See Thermal Consideration section.
Thermal resistance vs. airspeed measured at the converter. Tested in
wind tunnel with airflow and test conditions as per the Thermal
consideration section. VI= 53 V.
Output Current Derating – Base plate + Heat sink Output Current Derating – Cold wall sealed box
0
5
10
15
20
25
30
35
0 20406080100[°C]
[A]
3.0 m/ s
2.0 m/ s
1.5 m/ s
1.0 m/ s
0.5 m/ s
Na t. Conv .
0
5
10
15
20
25
30
35
40
0 20406080100[°C]
A
Tam b 8 5°C
Available load current vs. ambient air temperature and airflow at
VI= 53 V. See Thermal Consideration section. Tested with Plate Fin
Transverse heatsink, height 0.23 In, P0114 Thermal Pad.
Available load current vs. base plate temperature at 85ºC ambient.
VI= 53 V. See Thermal Consideration section.
E
BMR456 series Fully regulated Advanced Bus Converters
Input 36-75 V, Output up to 39A /468W
1/28701-FGC 101 1823 revDFebruary 2013
© Ericsson AB
Technical Specification
10