Ericsson Internal
PRODUCT SPECIFICATION 1 (5)
Prepared (also subject responsible if other) No.
SEC/S Kevin Zhou 1/1301- BMR 453 Uen
Approved Checked Date Rev Reference
SEC/S Kevin Zhou 2012-06-15 L
Key Features
Industry standard five pin Quarter-brick
57.9 x 36.8 x 11.6 mm (2.28 x 1.45 x 0.46 in.)
Optional digital PMBus interface
Fully regulated intermediate bus converter
High efficiency, typ. 96% at half load, 12 Vout
+/- 2% output voltage tolerance band
1500 Vdc input to output isolation
2.5 million hours MTBF
Optional baseplate
Optional output voltage Droop for paral lel operation
ISO 9001/14001 certified supplier
PMBus Revision 1.1 compliant
Power Management
Configurable soft start/stop
Precision delay and ramp-up
Voltage sequencing and margining
Voltage/current/temperature monitoring
Configurable output voltage
Power good
Synchronization
Voltage track
Safety Approvals Design for Environment
Meets requirements in high-
temperature lead-free soldering
processes.
Ericsson Internal
TABLE OF CONTENTS 1 (1)
Prepared (also subject responsible if other) No.
SEC/S Kevin Zhou 00152-EN/LZT146395
Approved Checked Date Rev Reference
SEC/S Kevin Zhou 2011-07-07 J
Contents
Ordering Information .............................................................2
General Information .............................................................2
Safety Specification .............................................................4
Absolute Maximum Ratings .............................................................5
Functional Description .............................................................6
Electrical Specification
3.3 V, 60 A / 198 W BMR 453 0002/003............................... 7
5 V, 60 A / 300 W BMR 453 0002/004.............................10
9 V, 33 A / 297 W BMR 453 0000/002.............................13
12 V, 33 A / 396 W BMR 453 0000/001.............................16
EMC Specification ........................................................... 19
Operating Information ...........................................................20
Thermal considerations ........................................................... 23
Connections ...........................................................24
PMBus communications ........................................................... 25
Mechanical Information ...........................................................28
Soldering Information ...........................................................32
Delivery Information ...........................................................33
Product Qualification Specification ........................................................... 35
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
Ericsson Internal
PRODUCT SPECIFICATION 2 (5)
Prepared (also subject responsible if other) No.
SEC/S Kevin Zhou 1/1301- BMR 453 Uen
Approved Checked Date Rev Reference
SEC/S Kevin Zhou 2012-06-15 L
Ordering Information
Product program Output
BMR4530002/003 3.3 V / 60 A, 198 W
BMR4530002/004 5 V / 60 A, 300 W
BMR4530000/002 9 V / 33 A, 297 W
BMR4530006/012 9.6 V / 33 A, 297 W
BMR4530000/001 12 V / 33 A, 396 W
BMR4530006/013 12 V / 33 A, 376 W
BMR4530006/014 12.45 V / 33 A, 391 W
Product Number and Packaging
BMR453 n1 n2 n3 n4 / n5 n6 n7 n8
Mechanical
pin option x /
Mechanical
option x /
Hardware option x x /
Configuration file / x x x x
Optional
designation Description
n1
n2
n3 n4
n5 n6 n7
0 = Standard pin length 5.33 mm
1 = Surface mount option note 1
2 = Lead length 3.69 mm
3 = Lead length 4.57 mm
4 = Lead length 2.79 mm (cut)
5 = Lead length 2.79 mm
stand off 6.7 mm
0 = Open frame
1 = Baseplate
2 = Baseplate with GND-pin
00 = 8.1-13.2 Vout With digital interface
01 = 8.1-13.2 Vout Without digital interface
02 = 3-6.7 Vout With digital interface
03 = 3-6.7 Vout Without digital interface
06 = 8.1-13.2 Vout With 0.6 V droop load
sharing function Without digital interface
07 = 8.1-13.2 Vout With 0.6 V droop load
sharing function With digital interface
001 = 12 V Standard configuration
002 = 9 V Standard configuration
003 = 3.3 V Standard configuration
004 = 5 V Standard configuration
007 = 9 V with positive RC logic configuration
008 = 12 V with positive RC logic configuration
009 = 3.3 V with positive RC logic configuration
010 = 5 V with positive RC logic configuration
012 = 9.6 V with 0.6 V droop load sharing
function configuration (available only for n3n4
= 06 or 07)
013 = 12 V with 0.6 V droop load sharing
function configuration
(Vin 40-75, available only for n3n4 = 06 or 07)
014 = 12.45 V with 0.6 V droop load sharing
function configuration
Packaging
(Vin 40-75, available only for n3n4 = 06 or 07)
xxx = Application Specific Configuration
20 converters/tray/box PE foam dissipative
Example: Product number BMR4532000/002 equals an Through hole mount
lead length 3.69 mm (cut), open frame, digital interface with 9 V standard
configuration variant.
Note 1: Surface mount option available for 8.1-13.2Vout open frame version.
Can not be combined with base plate 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 leve ls of failure rates based
on the mean and standard deviation.
Mean steady-state failure rate, Std. deviation,
403 nFailures/h 61 nFailures/h
MTBF (mean value) for the BMR453 series = 2.5 Mh.
MTBF at 90% confidenc e level = 2.1 Mh
Compatibility with RoHS requirements
The products are compatible wit h the rel evant clauses and
requirements of the RoHS directive 2011/65/EU and have a
maximum concentration value of 0.1% b y weight in
homogeneous materials for lead, mercury, hexavalent
chromium, PBB and PBDE and of 0.01% by weight in
homogeneous materials for cadmi um.
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 dec larations 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
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© 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 453 Uen
Approved Checked Date Rev Reference
SEC/S Kevin Zhou 2012-06-15 L
like ISO 9000, Six Sigma, and SPC are inten sively in use to
boost the continuous improvements strateg y. Infant
mortality or early failures in the prod ucts 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 Conditi ons of Sale.
Limitation of Liability
Ericsson Power Modules does not make any other
warranties, expressed or impli ed including any warranty of
merchantability or fitness for a particular purp ose (including,
but not limited to, use in life support applications, where
malfunctions of product can cause i njury to a person’s
health or life).
© Ericsson AB 2012
The information and specifications in this technical
specification is believed to be correct at the time of
publication. However, no liabil ity 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
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© 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 453 Uen
Approved Checked Date Rev Reference
SEC/S Kevin Zhou 2012-06-15 L
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 a nd UL 60950-1
Safety of Information Technology Equipment.
IEC/EN/UL 60950-1 contains requirements to prevent injury
or damage due to the following hazar ds:
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 acceptabilit y
apply for component po wer 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 compo nents 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 slo w blo w 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 f r om 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 follo wing conditions is met:
The input sour ce has double or reinforced insulation
from the AC mains according to IEC/EN/UL 60950-1
The input sour ce 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 sour ce 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 accordi ng to
IEC/EN/UL 60950-1.
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
4
Ericsson Internal
PRODUCT SPECIFICATION 1 (15)
Prepared (also subject responsible if other) No.
EMAOLII/eshnmaa 2/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-05-02 J
Absolute Maximum Ratings
Characteristics min typ max Unit
TP1 Operating Temperature (see Thermal Consideration section) -40 +125 °C
TS Storage temperature -55 +125 °C
VI Input voltage -0.5 80 V
Viso Isolation voltage (input to output test voltage), see note 1 1500 Vdc
Vtr Input voltage transient (Tp 100 ms) 100 V
VRC Remote Control pin voltage -0.3 18 V
V Logic
I/O SALERT, CTRL, SYNC, SCL, SDA, SA(0,1) -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.
Fundamental Circuit Diagram
-IN
+IN
+OUT
-OUT
Driver
Driver
Control
RC isolation
Auxillary
Supply
RC
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
5
Ericsson Internal
PRODUCT SPECIFICATION 2 (15)
Prepared (also subject responsible if other) No.
EMAOLII/eshnmaa 2/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-05-02 J
Functional Description
TP1 = -40 to +90ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.
Typical values given at: TP1 = +25°C, VI= 53 V, max IO , unless otherwise specified under Conditions
Configuration File: 190 10-CDA 102 935/001 rev D
Characteristics Conditions min typ max Unit
PMBus monitoring accuracy
VIN_READ Input voltage -3 +0.4 3 %
VOUT_READ Output voltage VI = 53 V -1.0 -0.3 1.0 %
IOUT_READ Output current VI = 53 V, 50-100% of max IO -6 -0.1 6 %
IOUT_READ Output current VI = 53 V, 10% of max IO -0.7 - 0.7 A
TEMP_READ Temperature -5 - 5
ºC
Fault Protection Characteristics
Factory default - 33 - V
Setpoint accuracy -3 - 3 %
Factory default - 1.8 - V
Hysteresis Configurable via PMBus of
threshold range, Note 1 0 - - V
Input Under Voltage
Lockout,
UVLO
Delay - 200 -
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 - 38 -
IOUT_OC_FAULT_LIMIT Configurable via PMBus, Note 1 0 - 100 A
Over Current
Protection,
OCP
fault response time - 200 - μs
Factory default - 135 -
OTP_FAULT_LIMIT Configurable via PMBus, Note 1 -50 135
Factory default 10
OTP hysteresis Configurable via PMBus, Note 1 0 165
C
Over Temperature
Protection,
OTP
fault response time - 200 - μs
Logic Input/Output Characteristics
Logic input low (VIL) - - 0.8 V
Logic input high (VIH)
CTRL_CS, SA0, SA1, PG_SYNC,
SCL, SDA, 2.0 - - V
Logic output low (VOL)
CTRL_CS, PG_SYNC, SALERT,
SCL, SDA
IOL = 5 mA
- - 0.4 V
Logic output high (VOH)
CTRL_CS, PG_SYNC, SALERT,
SCL, SDA
IOH = -5 mA
2.8 - - V
Setup time, SMBus 100 - ns
Hold time, SMBus 300 - ns
Bus free time T(BUF) Note 2 200 - us
Note 1: See Operating Information section.
Note 2: It is recommended that a PMBus master read back written data for verification i.e. do not rely on the ACK/NACK bit since this bit are as susceptible to errors as any other bit*. However,
under very rare operating conditions, it is possible to get intermittent read back failures. It is therefore recommended to implement error handling in the master that also deals with those situations.
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
6
Ericsson Internal
PRODUCT SPECIFICATION 3 (15)
Prepared (also subject responsible if other) No.
EMAOLII/eshnmaa 2/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-05-02 J
3.3V, 60A / 198W Electrical Specification BMR 453 0002/003
TP1 = -40 to +90ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.
Typical values given at: TP1 = +25°C, VI= 53 V, max IO , unless otherwise specified under Conditions.
Additional Cout = 0.1 mF, Configuration File: 190 10-CDA 102 935/003 rev B
Characteristics Conditions min typ max Unit
VI Input 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
CI Internal input capacitance 10 μF
PO Output power 0 198 W
50% of max IO 94.7
max IO 93.3
50% of max IO , VI = 48 V 94.9
η Efficiency
max IO , VI = 48 V 93.3
%
Pd Power Dissipation max IO 14.1 20.8 W
Pli Input idling power IO = 0 A, VI = 53 V 1.7 W
PRC Input standby power VI = 53 V (turned off with RC) 123 mW
fs Default switching frequency 0-100% of max IO see Note 1 171 180 189 kHz
VOi Output voltage initial setting and
accuracy TP1 = +25°C, VI = 53 V, IO = 60 A 3.26 3.3 3.36 V
Output adjust range See operating information 3.0 6.7 V
Output voltage tolerance band 0-100% of max IO 3.22 3.38 V
Line regulation max IO 4 16 mV
VO
Load regulation VI = 53 V, 1-100% of max IO 4 12 mV
Vtr Load transient
voltage deviation ±0.2 V
ttr Load transient recovery time
VI = 53 V, Load step 25-75-25% of
max IO, di/dt = 1 A/μs, see Note 2
250 µs
tr Ramp-up time
(from 10−90% of VOi) 8 ms
ts Start-up time
(from VI connection to 90% of VOi)
10-100% of max IO,
TP1 = 25ºC, VI = 53 V
see Note 3 140 ms
max IO 0.2 ms
tf Vin shutdown fall time
(from VI off to 10% of VO) IO = 0 A 4.5 s
RC start-up time max IO 52 ms
max IO 3 ms
tRC RC shutdown fall time
(from RC off to 10% of VO) IO = 0 A 4.5 s
IO Output current 0 60 A
Ilim Current limit threshold VO = 3.0 V, TP1 < max TP1 61 66 82 A
Isc Short circuit current TP1 = 25ºC, VO < 0.2 V, see Note 4 11 A
Cout Recommended Capacitive Load TP1 = 25ºC, see Note 5 0.1 6 10 mF
VOac Output ripple & noise See ripple & noise section,
max IO, VOi 30 100 mVp-p
OVP Over voltage protection TP1 = +25°C, VI = 53 V, 10-100% of
max IO , see Note 6 4.6 V
Note 1: Frequency may be adjusted via PMBus, see Operating Information section.
Note 2: Cout = 6 mF used at load transient test.
Note 3: Start-up and Ramp-up time can be increased via PMBus, see Operation Information section.
Note 4: RMS current in hiccup mode.
Note 5: Low ESR-value.
Note 6: OVP-level can be adjusted via PMBus, see Operation Information.
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
7
Ericsson Internal
PRODUCT SPECIFICATION 4 (15)
Prepared (also subject responsible if other) No.
EMAOLII/eshnmaa 2/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-05-02 J
3.3V, 60A / 198W Electrical Specification BMR 453 0002/003
Efficiency Power Dissipation
75
80
85
90
95
100
0 102030405060[A]
[%]
36 V
48 V
53 V
75 V
0
2
4
6
8
10
12
14
16
18
0 1020 3040 5060[A]
[W]
36 V
48 V
53 V
75 V
Efficiency vs. load current and input voltage at TP1 = +25C Dissipated power vs. load current and input voltage at
TP1 = +25°C
Output Current Derating, open frame Output Current Derating, base plate option
0
10
20
30
40
50
60
10 30 50 70 90 110 [°C]
[A]
3.0 m/s
2.0 m/s
1.0 m/s
0.5 m/s
0
10
20
30
40
50
60
10 30 50 70 90 110 [°C]
[A]
3.0 m/s
2.0 m/s
1.0 m/s
0.5 m/s
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
Thermal Resistance, base plate option
0
2
4
6
8
0,0 0,5 1,0 1,5 2,0 2,5 3,0 [m/s]
[癈/W ]
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
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
8
Ericsson Internal
PRODUCT SPECIFICATION 5 (15)
Prepared (also subject responsible if other) No.
EMAOLII/eshnmaa 2/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-05-02 J
3.3V, 60A / 198W Electrical Specification BMR 453 0002/003
Output Characteristics Current Limit Characteristics
3.20
3.25
3.30
3.35
3.40
0 102030405060
[A]
[V]
36 V
48 V
53 V
75 V
1. 0
2. 0
3. 0
4. 0
60 62 64 66 68 70 72 74 [A]
[V]
36 V
48 V
53 V
75 V
Output voltage vs. load current at TP1 = +25°C Output voltage vs. load current at IO > max IO , TP1 = +25°C
Start-up Shut-down
Start-up enabled by connecting VI at:
TP1 = +25°C, VI = 53 V,
IO = 60 A resistive load.
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (50 ms/div.).
Shut-down enabled by disconnecting VI at:
TP1 = +25°C, VI = 53 V,
IO =60 A resistive load.
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (0.2 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
TP1 = +25°C, VI = 53 V,
IO = 60 A resistive load.
Trace: output voltage (20 mV/div.).
Time scale: (2 µs/div.). Output voltage response to load current step-
change (15 – 45 – 15 A) at:
TP1 =+25°C, VI = 53 V.
Top trace: output voltage (0.2 V/div.).
Bottom trace: output current (50 A/div.).
Time scale: (0.5 ms/div.).
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
9
Ericsson Internal
PRODUCT SPECIFICATION 6 (15)
Prepared (also subject responsible if other) No.
EMAOLII/eshnmaa 2/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-05-02 J
5.0V, 60A / 300W Electrical Specification BMR 453 0002/004
TP1 = -40 to +90ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.
Typical values given at: TP1 = +25°C, VI= 53 V, max IO , unless otherwise specified under Conditions.
Additional Cout = 0.1 mF, Configuration File: 190 10-CDA 102 935/004 rev B
Characteristics Conditions min typ max Unit
VI Input 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
CI Internal input capacitance 10 μF
PO Output power 0 300 W
50% of max IO 96.0
max IO 94.8
50% of max IO , VI = 48 V 96.1
η Efficiency
max IO , VI = 48 V 94.8
%
Pd Power Dissipation max IO 16.5 22.8 W
Pli Input idling power IO = 0 A, VI = 53 V 1.9 W
PRC Input standby power VI = 53 V (turned off with RC) 143 mW
fs Default switching frequency 0-100% of max IO see Note 1 171 180 189 kHz
VOi Output voltage initial setting and
accuracy TP1 = +25°C, VI = 53 V, IO = 60 A 4.95 5.0 5.05 V
Output adjust range See operating information 3.0 6.7 V
Output voltage tolerance band 0-100% of max IO 4.9 5.1 V
Line regulation max IO 3 19 mV
VO
Load regulation VI = 53 V, 1-100% of max IO 6 12 mV
Vtr Load transient
voltage deviation ±0.2 V
ttr Load transient recovery time
VI = 53 V, Load step 25-75-25% of
max IO, di/dt = 1 A/μs, see Note 2
200 µs
tr Ramp-up time
(from 10−90% of VOi) 8 ms
ts Start-up time
(from VI connection to 90% of VOi)
10-100% of max IO,
TP1 = 25ºC, VI = 53 V
see Note 3 140 ms
max IO 0.2 ms
tf Vin shutdown fall time
(from VI off to 10% of VO) IO = 0 A 4.5 s
RC start-up time max IO 53 ms
max IO 2 ms
tRC RC shutdown fall time
(from RC off to 10% of VO) IO = 0 A 4.5 s
IO Output current 0 60 A
Ilim Current limit threshold VO = 4.5 V, TP1 < max TP1 61 66 82 A
Isc Short circuit current TP1 = 25ºC, VO < 0.2 V, see Note 4 11 A
Cout Recommended Capacitive Load TP1 = 25ºC, see Note 5 0.1 6 10 mF
VOac Output ripple & noise See ripple & noise section,
max IO, VOi 25 100 mVp-p
OVP Over voltage protection TP1 = +25°C, VI = 53 V, 10-100% of
max IO , see Note 6 6.8 V
Note 1: Frequency may be adjusted via PMBus, see Operating Information section.
Note 2: Cout = 6 mF used at load transient test.
Note 3: Start-up and Ramp-up time can be increased via PMBus, see Operation Information section.
Note 4: RMS current in hiccup mode.
Note 5: Low ESR-value.
Note 6: OVP-level can be adjusted via PMBus, see Operation Information.
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
10
Ericsson Internal
PRODUCT SPECIFICATION 7 (15)
Prepared (also subject responsible if other) No.
EMAOLII/eshnmaa 2/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-05-02 J
5.0V, 60A / 300W Electrical Specification BMR 453 0002/004
Efficiency Power Dissipation
75
80
85
90
95
10 0
0 10 203040 5060[A]
[%]
36 V
48 V
53 V
75 V
0
2
4
6
8
10
12
14
16
18
20
0 102030405060[A]
[W]
36 V
48 V
53 V
75 V
Efficiency vs. load current and input voltage at TP1 = +25C Dissipated power vs. load current and input voltage at
TP1 = +25°C
Output Current Derating, open frame Output Current Derating, base plate option
0
10
20
30
40
50
60
10 30 50 70 90 110 [°C]
[A]
3.0 m/s
2.0 m/s
1.0 m/s
0.5 m/s
0
10
20
30
40
50
60
10 30 50 70 90 110 [°C]
[A]
3.0 m/s
2.0 m/s
1.0 m/s
0.5 m/s
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
Thermal Resistance, base plate option
0
2
4
6
8
0.0 0.5 1.0 1.5 2.0 2.5 3.0 [m/s]
[°C/W]
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
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
11
Ericsson Internal
PRODUCT SPECIFICATION 8 (15)
Prepared (also subject responsible if other) No.
EMAOLII/eshnmaa 2/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-05-02 J
5.0V, 60A / 300W Electrical Specification BMR 453 0002/004
Output Characteristics Current Limit Characteristics
4.90
4.95
5.00
5.05
5.10
0 102030405060
[A]
[V]
36 V
48 V
53 V
75 V
1.0
2.0
3.0
4.0
5.0
6.0
60 62 64 66 68 70 72 74 [A]
[V]
36 V
48 V
53 V
75 V
Output voltage vs. load current at TP1 = +25°C Output voltage vs. load current at IO > max IO , TP1 = +25°C
Start-up Shut-down
Start-up enabled by connecting VI at:
TP1 = +25°C, VI = 53 V,
IO = 60 A resistive load.
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (50 ms/div.).
Shut-down enabled by disconnecting VI at:
TP1 = +25°C, VI = 53 V,
IO =60 A resistive load.
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (0.2 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
TP1 = +25°C, VI = 53 V,
IO = 60 A resistive load.
Trace: output voltage (20 mV/div.).
Time scale: (2 µs/div.). Output voltage response to load current step-
change (15-45-15 A) at:
TP1 =+25°C, VI = 53 V.
Top trace: output voltage (0.2 V/div.).
Bottom trace: output current (50 A/div.).
Time scale: (0.5 ms/div.).
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
12
Ericsson Internal
PRODUCT SPECIFICATION 9 (15)
Prepared (also subject responsible if other) No.
EMAOLII/eshnmaa 2/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-05-02 J
9.0V, 33A / 297W Electrical Specification BMR 453 0000/002
TP1 = -40 to +90ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.
Typical values given at: TP1 = +25°C, VI= 53 V, max IO , unless otherwise specified under Conditions.
Additional Cout = 0.1 mF, Configuration File: 190 10-CDA 102 935/002 rev D
Characteristics Conditions min typ max Unit
VI Input 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
CI Internal input capacitance 18 μF
PO Output power 0 297 W
50% of max IO 96
max IO 95
50% of max IO , VI = 48 V 96
η Efficiency
max IO , VI = 48 V 95
%
Pd Power Dissipation max IO 15.5 24.7 W
Pli Input idling power IO = 0 A, VI = 53 V 2.1 W
PRC Input standby power VI = 53 V (turned off with RC) 190 mW
fs Default switching frequency 0-100% of max IO see Note 1 133 140 145 kHz
VOi Output voltage initial setting and
accuracy TP1 = +25°C, VI = 53 V, IO = 17 A 8.90 9.0 9.10 V
Output adjust range See operating information 8.1 13.2 V
Output voltage tolerance band 0-100% of max IO 8.82 9.18 V
Line regulation max IO 15 50 mV
VO
Load regulation VI = 53 V, 1-100% of max IO 60 85 mV
Vtr Load transient
voltage deviation ±0.3 V
ttr Load transient recovery time
VI = 53 V, Load step 25-75-25% of
max IO, di/dt = 1 A/μs, see Note 2
250 µs
tr Ramp-up time
(from 10−90% of VOi) 8 ms
ts Start-up time
(from VI connection to 90% of VOi)
10-100% of max IO,
TP1 = 25ºC, VI = 53 V
see Note 3 140 ms
max IO 0.4 ms
tf Vin shutdown fall time
(from VI off to 10% of VO) IO = 0 A 8 s
RC start-up time max IO 53 ms
max IO 3.2 ms
tRC RC shutdown fall time
(from RC off to 10% of VO) IO = 0 A 8 s
IO Output current 0 33 A
Ilim Current limit threshold VO = 8.1 V, TP1 < max TP1 34 38 43 A
Isc Short circuit current TP1 = 25ºC, VO < 0.2 V, see Note 4 6 A
Cout Recommended Capacitive Load TP1 = 25ºC, see Note 5 0.1 3.3 6 mF
VOac Output ripple & noise See ripple & noise section,
max IO, VOi 50 120 mVp-p
OVP Over voltage protection TP1 = +25°C, VI = 53 V, 10-100% of
max IO , see Note 6 15.6 V
Note 1: Frequency may be adjusted via PMBus, see Operating Information section.
Note 2: Cout = 3.3 mF used at load transient test.
Note 3: Start-up and Ramp-up time can be increased via PMBus, see Operation Information section.
Note 4: RMS current in hiccup mode.
Note 5: Low ESR-value.
Note 6: OVP-level can be adjusted via PMBus, see Operation Information.
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
13
Ericsson Internal
PRODUCT SPECIFICATION 10 (15)
Prepared (also subject responsible if other) No.
EMAOLII/eshnmaa 2/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-05-02 J
9.0V, 33A / 297W Electrical Specification BMR 453 0000/002
Efficiency Power Dissipation
75
80
85
90
95
100
0 5 10 15 20 25 30 [A]
[%]
36 V
48 V
53 V
75 V
0
2
4
6
8
10
12
14
16
18
20
0 5 10 15 20 25 30 [A]
[W]
36 V
48 V
53 V
75 V
Efficiency vs. load current and input voltage at TP1 = +25C Dissipated power vs. load current and input voltage at
TP1 = +25°C
Output Current Derating, open frame Output Current Derating, base plate option
0
5
10
15
20
25
30
35
0 20406080100[°C]
[A]
3.0 m/s
2.0 m/s
1.0 m/s
0.5 m/s
0
5
10
15
20
25
30
35
0 20406080100[°C]
[A]
3.0 m/s
2.0 m/s
1.0 m/s
0.5 m/s
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
Thermal Resistance, base plate option
0
2
4
6
8
0.0 0.5 1.0 1.5 2.0 2.5 3.0 [m/s]
[癈/W]
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
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
14
Ericsson Internal
PRODUCT SPECIFICATION 11 (15)
Prepared (also subject responsible if other) No.
EMAOLII/eshnmaa 2/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-05-02 J
9.0V, 33A / 297W Electrical Specification BMR 453 0000/002
Output Characteristics Current Limit Characteristics
8.80
8.90
9.00
9.10
9.20
0 5 10 15 20 25 30 [A]
[V]
36 V
48 V
53 V
75 V
3,0
4,0
5,0
6,0
7,0
8,0
9,0
10,0
33 35 37 39 41 43 [A]
[V]
36 V
48 V
53 V
75 V
Output voltage vs. load current at TP1 = +25°C Output voltage vs. load current at IO > max IO , TP1 = +25°C
Start-up Shut-down
Start-up enabled by connecting VI at:
TP1 = +25°C, VI = 53 V,
IO = 33 A resistive load.
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (50 ms/div.).
Shut-down enabled by disconnecting VI at:
TP1 = +25°C, VI = 53 V,
IO =33 A resistive load.
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (0.2 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
TP1 = +25°C, VI = 53 V,
IO = 33 A resistive load.
Trace: output voltage (20 mV/div.).
Time scale: (2 µs/div.). Output voltage response to load current step-
change (8.25-24.75-8.25 A) at:
TP1 =+25°C, VI = 53 V.
Top trace: output voltage (0.2 V/div.).
Bottom trace: output current (10 A/div.).
Time scale: (0.5 ms/div.).
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
15
Ericsson Internal
PRODUCT SPECIFICATION 12 (15)
Prepared (also subject responsible if other) No.
EMAOLII/eshnmaa 2/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-05-02 J
12.0V, 33A / 396W Electrical Specification BMR 453 0000/001
TP1 = -40 to +90ºC, VI = 40 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.
Typical values given at: TP1 = +25°C, VI = 53 V, max IO , unless otherwise specified under Conditions.
Additional Cout = 0.1 mF, Configuration File: 190 10-CDA 102 935/001 rev D
Characteristics Conditions min typ max Unit
VI Input voltage range 40 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
CI Internal input capacitance 18 μF
PO Output power 0 396 W
50% of max IO 96.5
max IO 95.5
50% of max IO , VI = 48 V 96.5
η Efficiency
max IO , VI = 48 V 95.5
%
Pd Power Dissipation max IO 18.3 27.1 W
Pli Input idling power IO = 0 A, VI = 53 V 2.4 W
PRC Input standby power VI = 53 V (turned off with RC) 190 mW
fs Default switching frequency 0-100% of max IO see Note 1 133 140 145 kHz
VOi Output voltage initial setting and
accuracy TP1 = +25°C, VI = 53 V, IO = 17 A 11.88 12.0 12.12 V
Output adjust range See operating information 8.1 13.2 V
Output voltage tolerance band 0-100% of max IO 11.76 12.24 V
Line regulation max IO 20 60 mV
VO
Load regulation VI = 53 V, 1-100% of max IO 60 90 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, see Note 2
250 µs
tr Ramp-up time
(from 10−90% of VOi) 8 ms
ts Start-up time
(from VI connection to 90% of VOi)
10-100% of max IO,
TP1 = 25ºC, VI = 53 V
see Note 3 140 ms
max IO 0.4 ms
tf Vin shutdown fall time
(from VI off to 10% of VO) IO = 0 A 7 s
RC start-up time max IO 53 ms
max IO 3.2 ms
tRC RC shutdown fall time
(from RC off to 10% of VO) IO = 0 A 7 s
IO Output current 0 33 A
Ilim Current limit threshold VO = 10.8 V, TP1 < max Tref 34 38 43 A
Isc Short circuit current TP1 = 25ºC, see Note 4 - A
Cout Recommended Capacitive Load TP1 = 25ºC, see Note 5 0.1 3.3 6 mF
VOac Output ripple & noise See ripple & noise section,
max IO 60 120 mVp-p
OVP Over voltage protection TP1 = +25°C, VI = 53 V, 10-100% of
max IO, see Note 6 15.6 V
Note 1: Frequency may be adjusted with PMBus communication. See Operating Information section
Note 2: Cout = 3.3mF used at load transient test.
Note 3: Start-up and Ramp-up time can be increased via PMBus, see Operation Information section.
Note 4: OCP in latch mode
Note 5: Low ESR-value
Note 6: OVP-level can be adjusted via PMBus, see Operation Information.
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
16
Ericsson Internal
PRODUCT SPECIFICATION 13 (15)
Prepared (also subject responsible if other) No.
EMAOLII/eshnmaa 2/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-05-02 J
12.0V, 33A / 396W Electrical Specification BMR 453 0000/001
Efficiency Power Dissipation
75
80
85
90
95
10 0
0 5 10 15 20 25 30 [A ]
[%]
40 V
48 V
53 V
75 V
0
4
8
12
16
20
0 5 10 15 20 25 30 [A]
[W]
40 V
48 V
53 V
75 V
Efficiency vs. load current and input voltage at TP1 = +25C Dissipated power vs. load current and input voltage at
TP1 = +25°C
Output Current Derating, open frame Output Current Deratin g , base plate option
0
5
10
15
20
25
30
35
0 20 40 60 80 100 [°C]
[A]
3.0 m/s
2.0 m/s
1.0 m/s
0.5 m/s
0
5
10
15
20
25
30
35
0 204060 80100[°C]
[A]
3.0 m/s
2.0 m/s
1.0 m/s
0.5 m/s
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
Thermal Resistance, base plate option
0
2
4
6
8
0.0 0.5 1.0 1.5 2.0 2.5 3.0[m/s]
[°C/W]
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, IO = 25 A
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
17
Ericsson Internal
PRODUCT SPECIFICATION 14 (15)
Prepared (also subject responsible if other) No.
EMAOLII/eshnmaa 2/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-05-02 J
12.0V, 33A / 396W Electrical Specification BMR 453 0000/001
Output Characteristics Current Limit Characteristics
11. 5
11. 8
12 . 0
12 . 3
12 . 5
0 5 10 15 2 0 2 5 3 0 [ A ]
[V]
40 V
48 V
53 V
75 V
0.0
3.0
6.0
9.0
12.0
32 34 36 38 40 [A]
[V]
40 V
48 V
53 V
75 V
Output voltage vs. load current at TP1 = +25°C
The output voltage range is limited at 36V input voltage.
Output voltage vs. load current at IO > max IO , TP1 = +25°C
Start-up Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 53 V,
IO = 33 A resistive load.
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (50 ms/div.).
Shut-down enabled by disconnecting VI at:
TP1 = +25°C, VI = 53 V,
IO =33 A resistive load.
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (1 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
TP1 = +25°C, VI = 53 V,
IO = 33 A resistive load.
Trace: output voltage (20 mV/div.).
Time scale: (2 µs/div.).
Output voltage response to load current
step-change (8.25-24.75-8.25 A) at:
TP1 =+25°C, VI = 53 V, CO = 3.3mF.
Top trace: output voltage (0.2 V/div.).
Bottom trace: output current (10 A/div.).
Time scale: (0.5 ms/div.).
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
18
Ericsson Internal
PRODUCT SPECIFICATION 1 (7)
Prepared (also subject responsible if other) No.
SECSUND 30/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EGUHAIL 2011-07-07 H
EMC Specification
Conducted EMI measured according to EN55022, CISPR 22
and FCC part 15J (see test set-up). See Design Note 009 for
further information. The fundamental switching frequency is
140 kHz for BMR 453 @ VI = 53 V, max IO.
Conducted EMI Input terminal value (typ)
EMI without filter
External filter (class B)
Suggested external input filter in order to meet class B in
EN 55022, CISPR 22 and FCC part 15J.
L1
C1 C2 C3
C4
C5
R
-
+
Module
+
-
0
0
L2
Filter components:
C1 = 1 + 1 F
C2 = 1 + 1 F
C3 = 220 F
C4 = 2.2 nF
C5 = 2.2 nF
L1 = 0.81 mH
L2 = 0.81 mH
EMI with filter
Test set-up
Layout recommendation
The radiated EMI performance of the product will
depend on the PWB layout and ground layer design.
It is also important to consider the stand-off of the product.
If a ground layer is used, it should be connected to one of the
output terminals and the equipment ground or chassis.
A ground layer will increase the stray capacitance in the PWB
and improve the high frequency EMC performance.
Output ripple and noise
Output ripple and noise measured according to figure below.
See Design Note 022 for detailed information.
Output ripple and noise test setup
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
19
Ericsson Internal
PRODUCT SPECIFICATION 2 (7)
Prepared (also subject responsible if other) No.
SECSUND 30/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EGUHAIL 2011-07-07 H
Operating information
Input Voltage
The input voltage range 36 to 75 Vdc meets the requirements
of the European Telecom Standard ETS 300 132-2 for normal
input voltage range in -48 and -60 Vdc systems,
-40.5 to -57.0 V and –50.0 to -72 V respectively.
At input voltages exceeding 75 V, the power loss will be higher
than at normal input voltage and TP1 must be limited to
absolute max +125°C. The absolute maximum continuous
input voltage is 80 Vdc.
Turn-off Input Voltage
The product monitors the input voltage and will turn on and
turn off at predetermined levels. The turn on and turn off level
and the hysteresis in between can be configured via the
PMBus. The default hysteresis between turn on and turn off
input voltage is set to 2 V.
Remote Control (RC)
The products are fitted with a
configurable remote control
function. The primary remote control
is referenced to the primary
negative input connection (-In). The
RC function allows the converter to
be turned on/off by an external
device like a semiconductor or
mechanical switch. The RC pin has
an internal pull up resistor. The
remote control functions can also be
configured using the PMBus.
The device should be capable of sinking 0.7 mA. When the
RC pin is left open, the voltage generated on the RC pin is
max 6 V. The standard product is provided with “negative
logic” remote control and will be off until the RC pin is
connected to the -In. To turn on the product the voltage
between RC pin and -In should be less than 1 V. To turn off
the product the RC pin should be left open. In situations where
it is desired to have the product to power up automatically
without the need for control signals or a switch, the RC pin can
be wired directly to -In. The logic option for the primary remote
control is configured using the PMBus.
Remote Control (secondary side)
The CTRL CS pin can be configured as remote control via the
PMBus interface. In the default configuration the CTRL CS pin
is disabled and the output has an internal pull-up to 3.3 V. The
CTRL CS pin can be left open when not used. The logic
options for the secondary remote control can be positive or
negative logic.
Input and Output Impedance
The impedance of both the input source and the load will
interact with the impedance of the product. It is important that
the input source has low characteristic impedance. Minimum
recommended external input capacitance is 100 uF. The
performance in some applications can be enhanced by
addition of external capacitance as described under External
Decoupling Capacitors.
External Decoupling Capacitors
When powering loads with significant dynamic current
requirements, the voltage regulation at the point of load can be
improved by addition of decoupling capacitors at the load. The
recommended minimum capacitance on the output is 100 uF.
The most effective technique is to locate low ESR ceramic and
electrolytic capacitors as close to the load as possible, using
several parallel capacitors to lower the effective ESR. The
ceramic capacitors will handle high-frequency dynamic load
changes while the electrolytic capacitors are used to handle
low frequency dynamic load changes. Ceramic capacitors will
also reduce any high frequency noise across the load. It is
equally important to use low resistance and low inductance
PWB layouts and cabling.
External decoupling capacitors will become part of the
product’s control loop. The control loop is optimized for a wide
range of external capacitance and the maximum
recommended value that could be used without any additional
analysis is found in the Electrical specification.
The ESR of the capacitors is a very important parameter.
Stable operation is guaranteed with a verified ESR value of
>10 mΩ across the output connections.
For further information please contact your local Ericsson
Power Modules representative.
PMBus configuration and support
The products provide a PMBus digital interface that enables
the user to configure many aspects of the device operation as
well as monitor the input and output parameters. Please
contact your local Ericsson Power Modules representative for
appropriate SW tools to down-load new configurations.
Output Voltage Adjust using PMBus
The output voltage of the product can be reconfigured using
the PMBus interface. BMR 453 xx00/001 and /002 can be
adjusted from 8.1 V to 13.2 V. The BMR 453 xx02/003 and
/004 can be adjusted from 3.0 V to 6.7 V.
Margin Up/Down Controls
These controls allow the output voltage to be momentarily
adjusted, either up or down, by a nominal 10%. This provides
a convenient method for dynamically testing the operation of
the load circuit over its supply margin or range. It can also be
used to verify the function of supply voltage supervisors.
The margin up and down levels of the product can be re-
configured using the PMBus interface.
Soft-start Power Up
The soft-start control introduces a time-delay (default setting
40 ms) before allowing the output voltage to rise. The default
rise time of the ramp up is 10 ms. Power-up is hence
completed within 50 ms in default configuration using remote
control. When starting by applying input voltage the control
circuit boot-up time adds an additional 100 ms delay. The soft-
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
20
Ericsson Internal
PRODUCT SPECIFICATION 3 (7)
Prepared (also subject responsible if other) No.
SECSUND 30/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EGUHAIL 2011-07-07 H
start power up of the product can be reconfigured using the
PMBus interface.
Remote Sense
The products have remote sense that can be used to
compensate for voltage drops between the output and the
point of load. The sense traces should be located close to the
PCB ground layer to reduce noise susceptibility. The remote
sense circuitry will compensate for up to 10% voltage drop
between +Out pin and the point of load (+Sense). The -Sense
pin should be always connected to -Out. When activating
remote sense, connect the +Sense pin to the +Input of the
load. If the remote sense is not needed +Sense pin should be
connected to +Out of the BMR453 unit. To be able to use
remote sense the converter must be equipped with a digital
connector.
Temperature Protection (OTP, UTP)
The products are protected from thermal overload by an
internal temperature shutdown protection.
When TP1 as defined in thermal consideration section is
exceeded the product will shut down. The product will make
continuous attempts to start up (non-latching mode) and
resume normal operation automatically when the temperature
has dropped below the temperature threshold, the hysteresis
is defined in general electrical specification.
The OTP and hysteresis of the product can be re-configured
using the PMBus interface. The product has also an under
temperature protection. The OTP and UTP fault limit and fault
response can be configured via the PMBus. Note: using the
fault response “continue without interruption” may cause
permanent damage of the product.
Over Voltage Protection (OVP)
The product has output over voltage protection that will shut
down the converter in over voltage conditions (latching mode)
The OVP fault level and fault response can be re-configured
using the PMBus interface.
Over Current Protection (OCP)
The product includes current limiting circuitry for protection at
continuous overload. The module needs RC cycle operation at
least once before enters hic-up mode if the maximum output
current is exceeded and the output voltage is below 0.3×Vout.
The load distribution should be designed for the maximum
output short circuit current specified. If for some reason the
output should be short circuited, minimum resistance should
not be lower than 6 mΩ. The OCP level and fault response
can be re-configured using the PMBus interface.The default
configuration is set to hic-up mode for the OCP, except for
BMR453xxxx/001 (latching OCP). Brick wall OCP mode is also
supported in BMR453 series. For further information please
contact your local Ericsson Power Modules representative.
RC recycle operation as below:
Input Over/Under voltage protection
The input of the product can be protected agains high input
voltage and low input voltage. The over- and under-voltage
fault level and fault response can be configured via the PMBus
interface.
Pre-bias Start-up
The product has a Pre-bias start up functionality and will not
sink current during start up if a pre-bias source is present at
the output terminals.
Power Good
The PG SYNC pin can be configured as an output (POWER
GOOD). The power good signal (TTL level) indicates proper
operation of the product and can also be used as an error flag
indicator. The PG SYNC pin has POWER GOOD as default
configuration with the output set as active low. The PG SYNC
pin is configured via the PMBus interface.
Tracking and External reference
The PG SYNC pin can be configured as an input for voltage
tracking or an external analogue reference.
The PG SYNC pin is configured via the PMBus interface and
has default setting Power Good.
Send command MFR_MULTI_PIN_CONFIG (0xF9h) with data
0x10h, the module will work in standalone tracking mode;
Connect the PG_SYNC pin to the external reference voltage
(ground to –OUT), the output voltage will follow this reference
voltage with a predefined scale.
The max reference voltage is 2.5 V which connects to digital
controller's ADC port.
The reference voltage / Vout scale factor is stored in
MFR_VOUT_ANALOG_SCALE (0xE8h) with default value
0.175(0xA2CDh), end user can change it by using PMBus
command.
End user can read the scaled value by command
MFR_READ_VOUT_ANALOG_REF (0xE9h).
Any changes of using PMBUS command should use
command Store Default all (0x11h) to make the change
permanent before power off.
Switching frequency adjust using PMBus
The switching frequency is set to 140 kHz as default but this
can be reconfigured via the PMBus interface. The product is
optimized at this frequency but can run at lower and higher
Vin
RC_on
RC_off
RC_on
RC_off
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
21
Ericsson Internal
PRODUCT SPECIFICATION 4 (7)
Prepared (also subject responsible if other) No.
SECSUND 30/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EGUHAIL 2011-07-07 H
frequency, (125 kHz – 150 kHz). However the output
performance is not specified if the frequency is changed.
Input Transient
The BMR453 products have limited ability to react on sudden
input voltage changes. As an example the 12 V module
BMR453xxxx/001 can have an output voltage deviation of 5 V
when a 20 V input step is applied (40 V to 60 V). This is tested
with a slew rate of 0.1 V/us on the input voltage change and
minimum output capacitance 100 uF. Increasing the output
capacitance will improve the result.
Parallel Operation with Droop
The BMR 453 0006(or BMR4530007) with /012 or /013 or /014
configuration file are variants that can be connected in parallel.
The products have a pre-configured voltage droop: The stated
output voltage initial setting and accuracy is within ±35mV at
no load, The output voltage will decrease when the load
current is increased, the voltage will droop 0.6V while load
reaches max load. This feature allows the products to be
connected in parallel and share the current with 10%
accuracy. Up to 90% of max output current can be used from
each module.
Parallel Operation with Droop
8.8
9.0
9.2
9.4
9.6
9.8
0 102030405060
Output current [A]
Output voltage [V]
Modu le 1 +2
Modu le 1
Modu le 2
Fault protection at parallel operation with Droop
If one of the two modules exceeds the OVP, OCP or OTP
level, the module might turn off depends on its pre-set fault
response action, and the other module might not handle more
current than its max capability, that will lead to both modules
can not recover until the protection trig condition removed, to
secure a normal operation, both modules need a reset.
Synchronization with Frequency Interleaving
In order to reduce the input line current ripple, two products
may be synchronized including frequency interleaving.
Similarly as in the parallel configuration one module must be
configured as a master, the other one as a slave. Only the
sync signal should be provided from the master to the slave
module. The same switching frequency restrictions as for the
paralleling are valid. When the PG SYNC pin is configured as
an input (SYNC IN) the device will automatically check for a
clock signal on the PG SYNC pin each time the module is
enabled by RC or via PMBus.
BMR4530000/001 Output voltage regulatio n
8.1
8.6
9.1
9.6
10.1
10.6
11.1
11.6
12.1
12.6
13.1
13.6
36 39 42 44 47 50 55 60 65 70 75 [Vin, V]
[Vout, V]
Ordering operational designation n3 n4 = 00 or 01 , Output
voltage set point vs input voltage at: TP1 = +25°C, IO = 33
A resistive load, The output voltage will be fully regulated
for all operating combinations within the white area in the
plot above. Operation outside of this area is not
recommended for normal use. (Note 33 A is maximum load
current at start-up)
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
22
Ericsson Internal
PRODUCT SPECIFICATION 5 (7)
Prepared (also subject responsible if other) No.
SECSUND 30/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EGUHAIL 2011-07-07 H
Thermal Consideration
General
The products are designed to operate in different thermal
environments and sufficient cooling must be provided to
ensure reliable operation. For products mounted on a PWB
without a heat sink attached, cooling is achieved mainly by
conduction, from the pins to the host board, and convection,
which is dependant on the airflow across the product.
Increased airflow enhances the cooling of the product. The
Output Current Derating graph found in the Output section for
each model provides the available output current vs. ambient
air temperature and air velocity at
VI = 53 V.
The product is tested on a 254 x 254 mm, 35 µm (1 oz),
8-layer test board mounted vertically in a wind tunnel with a
cross-section of 608 x 203 mm.
Definition of product operating temperature
The product operating temperatures is used to monitor the
temperature of the product, and proper thermal conditions can
be verified by measuring the temperature at positions P1, P2,
P3, P4. The temperature at these positions (TP1, TP2, TP3, TP4)
should not exceed the maximum temperatures in the table
below. The number of measurement points may vary with
different thermal design and topology. Temperatures above
maximum TP1, measured at the reference point P1 (P3 for
base plate versions) are not allowed and may cause
permanent damage.
Position Description Max temperature
P1 PWB (reference point) TP1=125º C
P2 Opto-coupler TP2=105º C
P3 PWB (reference point for base-
p
late version
)
TP3=125º C
P4 Primary MOSFET TP4=125º C
Top view Bottom view
(Best airflow direction from Negative to Positive siede)
Ambient Temperature Calculation
For products with base plate the maximum allowed ambient
temperature can be calculated by using the thermal
resistance.
1. The power loss is calculated by using the formula
((1/η) - 1) × output power = power losses (Pd).
η = efficiency of product. E.g. 95% = 0.95
2. Find the thermal resistance (Rth) in the Thermal
Resistance graph found in the Output section for each
model. Note that the thermal resistance can be
significantly reduced if a heat sink is mounted on the
top of the base plate.
Calculate the temperature increase (T).
T = Rth x Pd
3. Max allowed ambient temperature is:
Max TP1 - T.
E.g. BMR 453 5100/001 at 2 m/s:
1. (( ) - 1) × 396 W = 23.5 W
2. 23.5 W × 3.1°C/W = 73°C
3. 125 °C – 73°C = max ambient temperature is 52°C
The actual temperature will be dependent on several factors
such as the PWB size, number of layers and direction of
airflow.
1
0.944
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
23
Ericsson Internal
PRODUCT SPECIFICATION 6 (7)
Prepared (also subject responsible if other) No.
SECSUND 30/1301-BMR 453 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EGUHAIL 2011-07-07 H
Connections (Top view)
Pin Designation Function
1 +In Positive Input
2 RC Remote Control
3 Case Case to GND (optional)
4 -In Negative Input
5 -Out Negative Output
6 S+ Positive Remote Sense
7 S- Negative Remote Sense
8 SA0 Address pin 0
9 SA1 Address pin 1
10 SCL PMBus Clock
11 SDA PMBus Data
12 PG SYNC
Configurable I/O pin:
Power Good output, SYNC-,
tracking-, or ext ref-input
13 DGND PMBus ground
14 SALERT PMBus alert signal
15 CTRL CS PMBus remote control or
Current share
16 +Out Positive Output
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
24
Ericsson Internal
PRODUCT SPECIFICATION 1 (4)
Prepared (also subject responsible if other) No.
SECSUND 31/1301-BMR 453+
Approved Checked Date Rev Reference
EAB/FJB/GMF (Ksenia Harrisen) (EANDKUL) 2012-05-02 B
PMBus Communications
The products provide a PMBus digital interface that enables
the user to configure many aspects of the device op eration as
well as monitor the input and output p arameters. The products
can be used with any standar d two-wire I2C or SMBus host
device. In addition, the device is compatible with PMBus
version 1.1 and includes an SALERT line to help mitigate
bandwidth limitations related to contin uous fault monitoring.
Monitoring via PMBus
A system controller can monitor a wide variety of differe nt
parameters through the PMBus interface. The controller can
monitor for fault condition by monitoring the SALERT pin,
which will be asserted when any number of pre-configured
fault or warning conditions occur. The system controller can
also continuously monitor for any number of power conversi on
parameters including but not limited to the following:
Input voltage
Output voltage
Output current
Internal junction temperature
Switching frequency
Duty cycle
Evaluation software
A Configuration Monitoring and Management (CMM)
evaluation software, is available for the products.
For more information please contact your local
Ericsson Power Modules sales representativ e.
Addressing
The figure and table bel ow show recommended resistor
values with min and max voltage rang e for hard-wiring PMBus
addresses (series E96, 1% tolerance resistors suggested):
SA0/SA1 R1 /R0 [k]
0 24.9
1 49.9
2 75
3 100
4 124
5 150
The SA0 and SA1 pins can be configur ed with a resistor to
GND according to the following equation.
PMBus Address = 8 x (SA0value) + (SA1 val ue)
If any one of those voltage applied to ADC0 and AD C1 is out
of the range from the table above, PMBus address 127 is
assigned. If the calculated PMBus address is 0 or 12, PMBus
address 127 is assigned instead. PMBus address 11 is not to
be used. The user shall also be aware of further limitations of
the addresses as stated in the PMBus Specification.
BMR453 / BMR454 PMBus Specification Exception
Item PMBus
Standard BMR453 /BMR454
#SMBALERT Open Drain Totem Pole
TLOW:EXT
(Cumulative clock
low extend time
(slave device))
25 ms 6.25 ms
TBUF_min
(Bus free time
between Stop and
Start Condition) 4.7 us 200 us
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
25
Ericsson Internal
PRODUCT SPECIFICATION 2 (4)
Prepared (also subject responsible if other) No.
SECSUND 31/1301-BMR 453+
Approved Checked Date Rev Reference
EAB/FJB/GMF (Ksenia Harrisen) (EANDKUL) 2012-05-02 B
PMBus Commands
The DC/DC converter is PMBUS compliant. The following table
lists the implemented PMBus commands. For more detai led
information see PMBus Power System Management Proto col
Specification; Part I – General Requir ements, Transport and
Electrical Interface and PMBus Power System Management
Protocol; Part II – Command Language.
Designation Cmd Impl
Standard PMBus Commands
Control Commands
PAGE 00h No
OPERATION 01h Yes
ON_OFF_CONFIG 02h Yes
WRITE_PROTECT 10h Yes
Output Commands
VOUT_MODE 20h Yes
VOUT_COMMAND 21h Yes
VOUT_TRIM 22h Yes
VOUT_GAIN 23h Yesnote1
VOUT_MAX 24h Yes
VOUT_MARGIN_HIGH 25h Yes
VOUT_MARGIN_LOW 26h Yes
VOUT_TRANSITION_RATE 27h Yes
VOUT_DROOP 28h No
VOUT_SCALE_LOOP 29h Yes note1
VOUT_SCALE_MONITOR 2Ah Yes note1
COEFFICIENTS 30h No
POUT_MAX 31h No
MAX_DUTY 32h Yes
FREQUENCY_SWITCH 33h Yes
VIN_ON 35h Yes
VIN_OFF 36h Yes
IOUT_CAL_GAIN 38h Yes note1
IOUT_CAL_OFFSET 39h Yes note1
Fault Limit Commands
POWER_GOOD_ON 5Eh Yes
POWER_GOOD_OFF 5Fh Yes
VOUT_OV_FAULT_LIMIT 40h Yes
VOUT_UV_FAULT_LIMIT 44h Yes
IOUT_OC_FAULT_LIMIT 46h Yes
IOUT_OC_LV_FAULT_LIMIT 48h Yes
IOUT_UC_FAULT_LIMIT 4Bh No
OT_FAULT_LIMIT 4Fh Yes
Designation Cmd Impl
OT_WARN_LIMIT 51h Yes
UT_WARN_LIMIT 52h Yes
UT_FAULT_LIMIT 53h Yes
VIN_OV_FAULT_LIMIT 55h Yes
VIN_OV_WARN_LIMIT 57h Yes
VIN_UV_WARN_LIMIT 58h Yes
VIN_UV_FAULT_LIMIT 59h Yes
VOUT_OV_WARN_LIMIT 42h Yes
VOUT_UV_WARN_LIMIT 43h Yes
IOUT_OC_WARN_LIMIT 4Ah Yes
IIN_OC_FAULT_LIMIT 5Bh No
IIN_OC_WARN_LIMIT 5Dh No
Fault Response Commands
VOUT_OV_FAULT_RESPONSE 41h Yes
VOUT_UV_FAULT_RESPONSE 45h Yes
OT_FAULT_RESPONSE 50h Yes
UT_FAULT_RESPONSE 54h Yes
VIN_OV_FAULT_RESPONSE 56h Yes
VIN_UV_FAULT_RESPONSE 5Ah Yes
IOUT_OC_FAULT_RESPONSE 47h Yes
IOUT_UC_FAULT_RESPONSE 4Ch No
IIN_OC_FAULT_RESPONSE 5Ch No
Time setting Commands
TON_DELAY 60h Yes
TON_RISE 61h Yes
TON_MAX_FAULT_LIMIT 62h Yes
TON_MAX_FAULT_RESPONSE 63h Yes
TOFF_DELAY 64h Yes
TOFF_FALL 65h Yes
TOFF_MAX_WARN_LIMIT 66h Yes
Status Commands (Read Only)
CLEAR_FAULTS 03h Yes
STATUS_BYTES 78h Yes
STATUS_WORD 79h Yes
STATUS_VOUT 7Ah Yes
STATUS_IOUT 7Bh Yes
STATUS_INPUT 7Ch Yes
STATUS_TEMPERATURE 7Dh Yes
STATUS_CML 7Eh Yes
STATUS_OTHER 7Fh Yes
Monitor Commands (Read Only)
READ_VIN 88h Yes
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
26
Ericsson Internal
PRODUCT SPECIFICATION 3 (4)
Prepared (also subject responsible if other) No.
SECSUND 31/1301-BMR 453+
Approved Checked Date Rev Reference
EAB/FJB/GMF (Ksenia Harrisen) (EANDKUL) 2012-05-02 B
Designation Cmd Impl
READ_VOUT 8Bh Yes
READ_IOUT 8Ch Yes
READ_TEMPERATURE_1 8Dh Yes
READ_TEMPERATURE_2 8Eh Yes
READ_FAN_SPEED_1 90h No
READ_DUTY_CYCLE 94h Yes
READ_FREQUENCY 95h Yes
READ_POUT 96h No
READ_PIN 97h No
Identification Commands (Read Only)
PMBUS_REVISION 98h Yes
MFR_ID 99h Yes note1
MFR_MODEL 9Ah Yes note1
MFR_REVISION 9Bh Yes note1
MFR_LOCATION 9Ch Yes note1
MFR_DATE 9Dh Yes note1
MFR_SERIAL 9Eh Yes note1
Group Commands
INTERLEAVE 37h No
Supervisory Commands
STORE_DEFAULT_ALL 11h Yes
RESTORE_DEFAULT_ALL 12h Yes
STORE_USER_ALL 15h No
RESTORE_USER_ALL 16h No
BMR 453/454 Specific Command s
MFR_POWER_GOOD_POLARITY D0h Yes
MFR_VOUT_UPPER_RESISTOR D2h Yes note1
MFR_VIN_SCALE_MONITOR D3h Yes note1
MFR_CLA_TABLE_NUM_ROW D4h Yes
MFR_CLA_ROW_COEFFICIENTS D5h Yes
MFR_STORE_CLA_TABLE D6h Yes
MFR_ACTIVE_COEFF_CLA_TABLE D8h Yes
MFR_SET_ROM_MODE D9h Yes note1
MFR_SELECT_TEMP_SENSOR DCh Yes
MFR_VIN_OFFSET DDh Yes note1
MFR_REMOTE_TEMP_CAL E2h Yes
MFR_REMOTE_CONTROL E3h Yes
MFR_DEAD_BAND_MODE E4h Yes note1
MFR_DEAD_BAND_DELAY E5h Yes note1
MFR_TEMP_COEFF E7h Yes note1
MFR_VOUT_ANALOG_SCALE E8h Yes
MFR_READ_VOUT_ANALOG_REF E9h Yes
Designation Cmd Impl
MFR_DEBUG_BUFF F0h Yes
MFR_SETUP_PASSWORD F1h Yes
MFR_DISABLE_SECURITY F2h Yes
MFR_DEAD_BAND_IOUT_THRESHOLD F3h Yes note1
MFR_SECURITY_BIT_MASK F4h Yes
MFR_PRIMARY_TURN F5h Yes note1
MFR_SECONDARY_TURN F6h Yes note1
MFR_SET_DPWM_POLARITY F7h Yes note1
MFR_ILIM_SOFTSTART F8h Yes
MFR_MULTI_PIN_CONFIG F9h Yes
MFR_DEAD_BAND_VIN_THRESHOLD FAh Yes note1
MFR_DEAD_BAND_VIN_IOUT_HYS FBh Yes note1
MFR_FIRMEWARE_VERSION FCh Yes note1
MFR_MESSAGE_CODE_DEVICE_ID FDh Yes note1
Notes:
Cmd is short for Command.
Impl is short for Implemented.
Note1:
the content is protected for being overwritten to secure normal
operation
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
27
Ericsson Internal
PRODUCT SPEC. MECHANICAL 1 (7)
Prepared (also subject responsible if other) No.
EPETSCH/EPEIHLI 4/1301- BMR453 Uen
Approved Checked Date Rev Reference
SEC/D [Julia You] See §1 2012-05-31 H
Mechanical Information - Hole Mount, Open Frame Version
All component placements – whether shown as physical components or symbolical outline – are for reference only and are subject to change throughout the product’s life cycle,
unless explicitly described and dimensioned in this drawing.
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
28
Ericsson Internal
PRODUCT SPEC. MECHANICAL 2 (7)
Prepared (also subject responsible if other) No.
EPETSCH/EPEIHLI/EPEIHLI 4/1301- BMR453 Uen
Approved Checked Date Rev Reference
SEC/D [Julia You] See §1 2012-05-3131 H
Mechanical Information- Hole Mount, Base Plate Version
All component placements – whether shown as physical components or symbolical outline – are for reference only and are subject to change throughout the product’s life cycle,
unless explicitly described and dimensioned in this drawing.
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
29
Ericsson Internal
PRODUCT SPEC. MECHANICAL 3 (7)
Prepared (also subject responsible if other) No.
EPETSCH/EPEIHLI/EPEIHLI 4/1301- BMR453 Uen
Approved Checked Date Rev Reference
SEC/D [Julia You] See §1 2012-05-3131 H
Mechanical Information - SMD mount, Open Frame Version
All component placements – whether shown as physical components or symbolical outline – are for reference only and are subject to change throughout the product’s life cycle,
unless explicitly described and dimensioned in this drawing.
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
30
Ericsson Internal
PRODUCT SPEC. MECHANICAL 4 (7)
Prepared (also subject responsible if other) No.
EPETSCH/EPEIHLI/EPEIHLI 4/1301- BMR453 Uen
Approved Checked Date Rev Reference
SEC/D [Julia You] See §1 2012-05-3131 H
Mechanical Information - Hole mount, Open Frame Version, Non Digital Interface
All component placements – whether shown as physical components or symbolical outline – are for reference only and are subject to change throughout the product’s life cycle,
unless explicitly described and dimensioned in this drawing.
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
31
Ericsson Internal
PRODUCT SPEC. 1 (5)
Prepared (also subject responsible if other) No.
EPETSCH 5/1301 BMR 453 Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Ksenia Harrisen] See §1 2011-03-29 D
Soldering Information – Surface Mounting
The surface mount product is intended for forced convection or vapor
phase reflow soldering in SnPb and Pb-free processes.
The reflow profile should be optimised to avoid excessive heating of the
product. It is recommended to have a sufficiently extended preheat time
to ensure an even temperature across the host PCB and it is also
recommended to minimize the time in reflow.
A no-clean flux is recommended to avoid entrapment of cleaning fluids
in cavities inside the product or between the product and the host
board, since cleaning residues may affect long time reliability and
isolation voltage.
Minimum Pin Temperature Recommendations
Pin number 5 is chosen as reference location for the minimum pin
temperature recommendation since this will likely be the coolest solder
joint during the reflow process.
SnPb solder processes
For SnPb solder processes, a pin temperature (TPIN) in excess of the
solder melting temperature, (TL, 183°C for Sn63Pb37) for more than
30 seconds and a peak temperature of 210°C is recommended to
ensure a reliable solder joint.
For dry packed products only: depending on the type of solder paste
and flux system used on the host board, up to a recommended
maximum temperature of 245°C could be used, if the products are kept
in a controlled environment (dry pack handling and storage) prior to
assembly.
General reflow process specifications SnPb eutectic Pb-free
Average ramp-up (TPRODUCT) 3°C/s max 3°C/s max
Typical solder melting
(liquidus) temperature TL 183°C 221°C
Minimum reflow time above
TL 30 s 30 s
Minimum pin temperature TPIN 210°C 235°C
Peak product temperature TPRODUC
T 225°C 260°C
Average ramp-down
(TPRODUCT) 6°C/s max 6°C/s max
Maximum time 25°C to peak 6 minutes 8 minutes
TPRODUCT maximum
TPIN minimum
Time
Pin
profile
Product
profile
TL
Time in
reflow
Time in preheat
/ soak zone
Time 25°C to peak
Temperature
Lead-free (Pb-free) solder processes
For Pb-free solder processes, a pin temperature (TPIN) in excess of the
solder melting temperature (TL, 217 to 221°C for SnAgCu solder alloys)
for more than 30 seconds and a peak temperature of 235°C on all
solder joints is recommended to ensure a reliable solder joint.
Maximum Product Temperature Requirements
Top of the product PCB near pin 2 is chosen as reference location for
the maximum (peak) allowed product temperature (TPRODUCT) since this
will likely be the warmest part of the product during the reflow process.
SnPb solder processes
For SnPb solder processes, the product is qualified for MSL 1 according
to IPC/JEDEC standard J-STD-020C.
During reflow TPRODUCT must not exceed 225 °C at an y time.
Pb-free solder processes
For Pb-free solder processes, the product is qualified for MSL 3
according to IPC/JEDEC standard J-STD-020C.
During reflow TPRODUCT must not exceed 260 °C at any time.
Dry Pack Information
Products intended for Pb-free reflow soldering processes are delivered
in standard moisture barrier bags according to IPC/JEDEC standard
J-STD-033 (Handling, packing, shipping and use of moisture/reflow
sensitivity surface mount devices).
Using products in high temperature Pb-free soldering processes
requires dry pack storage and handling. In case the products have been
stored in an uncontrolled environment and no longer can be considered
dry, the modules must be baked according to J-STD-033.
Thermocoupler Attachm ent
Pin 5 for measurement of minimum Pin (solder joint) temperature TPIN
Pin 2 for measurement of maximum product temperature TPRODUCT
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
32
Ericsson Internal
PRODUCT SPEC. 2 (5)
Prepared (also subject responsible if other) No.
EPETSCH 5/1301 BMR 453 Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Ksenia Harrisen] See §1 2011-03-29 D
Delivery Package Information – Surface Mount Version
The products are delivered in antistatic injection molded trays (Jedec
design guide 4.10D standard).
Tray Specifications
Material Antistatic PPE
Surface resistance 105 < Ohm/square < 1012
Bakability The trays can be baked at maximum
125°C for 48 hours
Tray thickness 14.50 mm 0.571 [inch]
Box capacity 20 products (2 full trays/box)
Tray weight 125 g empty, 574 g full tray
JEDEC standard tray for 2x5 = 10 products.
All dimensions in mm [inch]
Tolerances: X.x ±0.26 [0.01], X.xx ±0.13 [0.005]
Note: pick up positions refer to center of pocket.
See mechanical drawing for exact location on product.
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
33
Ericsson Internal
PRODUCT SPEC. 3 (5)
Prepared (also subject responsible if other) No.
EPETSCH 5/1301 BMR 453 Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Ksenia Harrisen] See §1 2011-03-29 D
Soldering Information – Hole Mounting
The hole mounted product is intended for plated through hole
mounting by wave or manual soldering. The pin temperature is
specified to maximum to 270°C for maximum 10 seconds.
A maximum preheat rate of 4°C/s and maximum preheat temperature
of 150°C is suggested. When soldering by hand, care should be taken
to avoid direct contact between the hot soldering iron tip and the pins
for more than a few seconds in order to prevent overheating.
A no-clean flux is recommended to avoid entrapment of cleaning fluids
in cavities inside the product or between the product and the host
board. The cleaning residues may affect long time reliability and
isolation voltage.
Delivery Package Information – Hole Mount Version
The products are delivered in antistatic trays.
Tray Specifications
Material PE Foam
Surface resistance 105 < Ohm/square < 1012
Bakability The trays are not bakeable
Tray capacity 20 converters/tray
Box capacity 40 products (2 full trays/box)
Weight
Product – Open frame
1100 g full tray, 140g empty tray
Product – Base plate option
1480 g full tray, 140 g empty tray
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
34
Ericsson Internal
PRODUCT SPEC. 4 (5)
Prepared (also subject responsible if other) No.
EPETSCH 5/1301 BMR 453 Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Ksenia Harrisen] See §1 2011-03-29 D
Product Qualification Specification
Characteristics
External visual inspection IPC-A-610
Change of temperature
(Temperature cycling) IEC 60068-2-14 Na Temperature ran ge
Number of cycles
Dwell/transfer time
-40 to 100°C
1000
15 min/0-1 min
Cold (in operation) IEC 60068-2-1 Ad Temperature TA
Duration -45°C
72 h
Damp heat IEC 60068-2-67 Cy Temperature
Humidity
Duration
85°C
85 % RH
1000 hours
Dry heat IEC 60068-2-2 Bd Temperature
Duration 125°C
1000 h
Electrostatic discharge
susceptibility IEC 61340-3-1, JESD 22-A114
IEC 61340-3-2, JESD 22-A115 Human body model (HBM)
Machine Model (MM) Class 2, 2000 V
Class 3, 200 V
Immersion in cleaning solvents IEC 60068-2-45 XA, method 2 Water
Glycol ether
Isopropyl alcohol
55°C
35°C
35°C
Mechanical shock IEC 60068-2-27 Ea Peak acceleration
Duration 100 g
6 ms
Moisture reflow sensitivity 1 J-STD-020C Level 1 (SnPb-eutectic)
Level 3 (Pb Free) 225°C
260°C
Operational life test MIL-STD-202G, method 108A Duration 1000 h
Resistance to soldering heat 2 IEC 60068-2-20 Tb, method 1A Solder temperature
Duration 270°C
10-13 s
Robustness of terminations IEC 60068-2-21 Test Ua1
IEC 60068-2-21 Test Ue1 Through hole mount products
Surface mount products All leads
All leads
Solderability
IEC 60068-2-58 test Td 1
IEC 60068-2-20 test Ta 2
Preconditioning
Temperature, SnPb Eutectic
Temperature, Pb-free
Preconditioning
Temperature, SnPb Eutectic
Temperature, Pb-free
150°C dry bake 16 h
215°C
235°C
Steam ageing
235°C
245°C
Vibration, broad band random IEC 60068-2-64 Fh, method 1 Frequency
Spectral density
Duration
10 to 500 Hz
0.07 g2/Hz
10 min in each direction
Notes
1 Only for products intended for reflow soldering (surface mount products)
2 Only for products intended for wave soldering (plated through hole products)
E
BMR 453 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 60 A / 396 W
EN/LZT 146 395 R7A June 2012
© Ericsson AB
Technical Specification
35
