Ericsson Internal
PRODUCT SPECIFICATION 1 (5)
Prepared (also subject responsible if other) No.
EZHIXZH 1/1301- BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) 2012-06-15 H
Key Features
Industry standard five pin Eighth-brick
58.4 x 22.7 x 10.2 mm (2.30 x 0.89 x 0.40 in.)
Optional digital PMBus interface
Fully regulated intermediate bus converter
High efficiency, typ. 95.5% at 12 Vout half load
+/- 2% output voltage tolerance band
1500 Vdc input to output isolation
2.5 million hours MTBF
Optional baseplate
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
Wide output voltage range
Configurable protection features
Synchronization
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
Approved Checked Date Rev Reference
SEC/S Kevin Zhou 2012-08-09 D
Contents
Ordering Information .............................................................2
General Information .............................................................2
Safety Specification .............................................................4
Absolute Maximum Ratings .............................................................5
Functional Description .............................................................6
Electrical Specification
3.3 V, 40 A / 132 W BMR 454 0002/003............................... 7
5 V, 38 A / 190 W BMR 454 0002/004.............................10
9 V, 20 A / 180 W BMR 454 0000/002.............................13
12 V, 20 A / 240 W BMR 454 0000/001.............................16
12 V, 20 A / 240 W BMR 454 0004/005.............................19
EMC Specification ........................................................... 22
Operating Information ...........................................................23
Thermal considerations ........................................................... 26
Connections ...........................................................27
PMBus communications ........................................................... 28
Mechanical Information ...........................................................31
Soldering Information ...........................................................34
Delivery Information ...........................................................35
Product Qualification Specification ........................................................... 37
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
Ericsson Internal
PRODUCT SPECIFICATION 2 (5)
Prepared (also subject responsible if other) No.
EZHIXZH 1/1301- BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) 2012-06-15 H
Ordering Information
Product program Output
BMR4540002/003 3.3 V / 40 A, 132 W
BMR4540002/004 5 V / 38 A, 190 W
BMR4540000/002 9 V / 20 A, 180 W
BMR4540000/001 12 V / 20 A, 240 W (Vin 40-75V)
BMR4540004/005 12 V / 20 A, 240 W (Vin 36-75V)
Product Number and Packaging
BMR454 n1n2n3n4 /n5n6n7
Options 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
n5 n6 n7
Packaging
0 = Standard pin length 5.33 mm
2 = Lead length 3.69 mm (0.145 in.)
3 = Lead length 4.57 mm (0.180 in.)
4 = Lead length 2.79 mm (0.110 in.) (cut)
0 = Open frame
1 = Baseplate
00 = 8.1-13.2Vout with digital interface
01 = 8.1-13.2Vout without digital interface
02 = 3-6.7Vout with digital interface
03 = 3-6.7Vout without digital interface
04 = 12Vout with digital interface
05 = 12Vout without digital interface
001 = 12 V Standard configuration (Vin 40-75V,
available only for n3 n4 = 00 or 01)
002 = 9 V Standard configuration
003 = 3.3 V Standard configuration
004 = 5 V Standard configuration
005 = 12 V Standard configuration (Vin 36-75V,
available only for n3 n4 = 04 or 05)
007 = 9V with positive RC logic configuration
008 = 12V with positive RC logic configuration
(Vin 40-75V, available only for n3 n4 = 00 or 01)
009 = 3.3V with positive RC logic configuration
010 = 5V with positive RC logic configuration
011 = 12V with positive RC logic configuration
(Vin 36-75V, available only for n3 n4 = 04 or 05)
xxx = Application Specific Configuration
25 Through hole converters/tray, three
trays/box, PE foam dissipative
20 SMD converters/tray, five full tray/box,
Antistatic PPE
Example: Product number BMR4542000/002 equals an Through hole mount
lead length 3.69 mm (cut), open frame, digital interface with 9 V standard
configuration variant.
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,
394 nFailures/h 61 nFailures/h
MTBF (mean value) for the BMR454 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
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.
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
2
Ericsson Internal
PRODUCT SPECIFICATION 3 (5)
Prepared (also subject responsible if other) No.
EZHIXZH 1/1301- BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) 2012-06-15 H
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
injury to a person’s healt h or li fe).
© 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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
3
Ericsson Internal
PRODUCT SPECIFICATION 4 (5)
Prepared (also subject responsible if other) No.
EZHIXZH 1/1301- BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) 2012-06-15 H
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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
4
Ericsson Internal
PRODUCT SPECIFICATION 1 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
5
Ericsson Internal
PRODUCT SPECIFICATION 2 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
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 1900/001 rev A
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 -1.0 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 - 25 -
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 0 165
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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
6
Ericsson Internal
PRODUCT SPECIFICATION 3 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
3.3 V, 40 A / 132 W Electrical Specification BMR 454 00 02/003
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 VI max IO, unless otherwise specified under Conditions.
Additional Cout = 0.1 mF, Configuration File: 190 10-CDA 102 1900/003 rev A
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 11 μF
PO Output power 0 132 W
50% of max IO 93
max IO 91.2
50% of max IO, VI = 48 V 93.2
η Efficiency
max IO, VI = 48 V 91.2
%
Pd Power Dissipation max IO 12.8 17.5 W
Pli Input idling power IO = 0 A, VI = 53 V 2.0 W
PRC Input standby power VI = 53 V (turned off with RC) 127 mW
fs 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 = 40 A 3.26 3.3 3.34 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 5 20 mV
VO
Load regulation VI = 53 V, 0-100 % of max IO 6 16 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 2 214 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 0.33 ms
tf VI shut-down fall time
(from VI off to 10% of VO) IO = 0 A 3.8 s
RC start-up time max IO 54 ms
max IO 2 ms
tRC RC shut-down fall time
(from RC off to 10% of VO) IO = 0 A 3.8 s
IO Output current 0 40 A
Ilim Current limit threshold VO = 3.0 V, TP1 < max Tref 41 45 49 A
Isc Short circuit current TP1 = 25ºC, VO < 0.2 V, see Note 4 7 8 A
Cout Recommended Capacitive Load TP1 = 25ºC, see Note 5 0.1 4 6 mF
VOac Output ripple & noise See ripple & noise section,
max IO, VOi 25 50 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 = 4 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 section.
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
7
Ericsson Internal
PRODUCT SPECIFICATION 4 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
3.3 V, 40 A / 132 W Electrical Specification BMR 454 00 02/003
Efficiency Power Dissipation
80
85
90
95
10 0
0 5 10 15 20 25 30 35 40 [A ]
[%]
36 V
48 V
53 V
75 V
0
2
4
6
8
10
12
14
16
0 5 10 15 20 25 30 35 40 [A]
[W]
36 V
48 V
53 V
75 V
Efficiency vs. load current and input voltage at Tref = +25C Dissipated power vs. load current and input voltage at
Tref = +25°C
Output Current Derating, open frame Output Current Derating, base plate option
0
5
10
15
20
25
30
35
40
0 20406080100[°C]
[A ]
3. 0 m/ s
2. 0 m/ s
1. 5 m/ s
1. 0 m/ s
0. 5 m/ s
Nat.
Con v.
0
5
10
15
20
25
30
35
40
0 20406080100[°C]
[A]
3. 0 m/ s
2. 0 m/ s
1. 5 m/ s
1. 0 m/ s
0. 5 m/ s
Nat.
Con v.
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
10
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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
8
Ericsson Internal
PRODUCT SPECIFICATION 5 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
3.3 V, 40 A / 132 W Electrical Specification BMR 454 0002/003
Output Characteristics Current Limit Characteristics
3,20
3,24
3,28
3,32
3,36
3,40
010203040
[A]
[V]
36 V
48 V
53 V
75 V
0,00
1,00
2,00
3,00
4,00
40 42 44 46 48 50 [A]
[V]
36 V
48 V
53 V
75 V
Output voltage vs. load current at Tref = +25°C Output voltage vs. load current at IO > max IO , Tref = +25°C
Start-up Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 53 V,
IO = 40 A resistive load.
Top trace: output voltage (1 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (50 ms/div.).
Shut-down enabled by disconnecting VI at:
Tref = +25°C, VI = 53 V,
IO =40 A resistive load.
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (0.5 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
Tref = +25°C, VI = 53 V,
IO = 40 A resistive load.
Trace: output voltage (10 mV/div.).
Time scale: (5 µs/div.). Output voltage response to load current step-
change (10 - 30 - 10 A) at:
Tref =+25°C, VI = 53 V. Co = 4 mF
Top trace: output voltage (0.2 V/div.).
Bottom trace: output current (20 A/div.).
Time scale: (0.5 ms/div.).
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
9
Ericsson Internal
PRODUCT SPECIFICATION 6 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
5 V, 38 A / 190 W Electrical Specification BMR 454 00 02/004
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 VI max IO, unless otherwise specified under Conditions.
Additional Cout = 0.1 mF, Configuration File: 190 10-CDA 102 1900/004 rev A
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 11 μF
PO Output power 0 190 W
50% of max IO 94.3
max IO 93.3
50% of max IO, VI = 48 V 94.5
η Efficiency
max IO, VI = 48 V 93.3
%
Pd Power Dissipation max IO 13.7 19.1 W
Pli Input idling power IO = 0 A, VI = 53 V 2.6 W
PRC Input standby power VI = 53 V (turned off with RC) 123 mW
fs 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 = 38 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 5 21 mV
VO
Load regulation VI = 53 V, 0-100% of max IO 5 18 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 0.4 ms
tf VI shut-down fall time
(from VI off to 10% of VO) IO = 0 A 3.7 s
RC start-up time max IO 55 ms
max IO 3 ms
tRC RC shut-down fall time
(from RC off to 10 % of VO) IO = 0 A 3.7 s
IO Output current 0 38 A
Ilim Current limit threshold VO = 4.5 V, TP1 < max Tref 41 45 49 A
Isc Short circuit current TP1 = 25ºC, VO < 0.2 V, see Note 4 7 8 A
Cout Recommended Capacitive Load TP1 = 25ºC, see Note 5 0.1 3.8 6 mF
VOac Output ripple & noise See ripple & noise section,
max IO, VOi 35 75 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 = 3.8 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 section.
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
10
Ericsson Internal
PRODUCT SPECIFICATION 7 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
5 V, 38 A / 190 W Electrical Specification BMR 454 00 02/004
Efficiency Power Dissipation
80
85
90
95
100
0 5 10 15 20 25 30 35 [A]
[%]
36 V
48 V
53 V
75 V
0
2
4
6
8
10
12
14
16
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 = +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. 5 m/ s
1. 0 m/ s
0. 5 m/ s
Nat.
Con v.
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
Nat.
Con v.
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
10
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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
11
Ericsson Internal
PRODUCT SPECIFICATION 8 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
5 V, 38 A / 190 W Electrical Specification BMR 454 0002/004
Output Characteristics Current Limit Characteristics
4,90
4,95
5,00
5,05
5,10
0 8 16 24 32 [A]
[V]
36 V
48 V
53 V
75 V
0.00
2.00
4.00
6.00
38 40 42 44 46 48 50 [A]
[V]
36 V
48 V
53 V
75 V
Output voltage vs. load current at Tref = +25°C Output voltage vs. load current at IO > max IO , Tref = +25°C
Start-up Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 53 V,
IO = 38 A resistive load.
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (20 ms/div.).
Shut-down enabled by disconnecting VI at:
Tref = +25°C, VI = 53 V,
IO =38 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:
Tref = +25°C, VI = 53 V,
IO = 38 A resistive load.
Trace: output voltage (20 mV/div.).
Time scale: (2 µs/div.). Output voltage response to load current step-
change (9.5 – 28.5 – 9.5 A) at:
Tref =+25°C, VI = 53 V. Co = 3.8 mF
Top trace: output voltage (0.2 V/div.).
Bottom trace: output current (20 A/div.).
Time scale: (0.5 ms/div.).
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
12
Ericsson Internal
PRODUCT SPECIFICATION 9 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
9 V, 20 A / 180 W Electrical Specification BMR 454 00 00/002
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 VI max IO, unless otherwise specified under Conditions.
Additional Cout = 0.1 mF, Configuration File: 190 10-CDA 102 1900/002 rev A
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 11 μF
PO Output power 0 180 W
50% of max IO 95
max IO 94
50% of max IO, VI = 48 V 95
η Efficiency
max IO, VI = 48 V 94
%
Pd Power Dissipation max IO 11.1 14.7 W
Pli Input idling power IO = 0 A, VI = 53 V 2.2 W
PRC Input standby power VI = 53 V (turned off with RC) 182 mW
fs 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 = 20 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 8 45 mV
VO
Load regulation VI = 53 V, 0-100% of max IO 8 30 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) 10 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 VI shut-down fall time
(from VI off to 10% of VO) IO = 0 A 5 s
RC start-up time max IO 54 ms
max IO 3 ms
tRC RC shut-down fall time
(from RC off to 10% of VO) IO = 0 A 5 s
IO Output current 0 20 A
Ilim Current limit threshold VO = 8.1 V, TP1 < max Tref 21 25 28 A
Isc Short circuit current TP1 = 25ºC, VO < 0.2 V, see Note 4 4 5 A
Cout Recommended Capacitive Load TP1 = 25ºC, see Note 5 0.1 2.2 6 mF
VOac Output ripple & noise See ripple & noise section,
max IO, VOi 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 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 section.
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
13
Ericsson Internal
PRODUCT SPECIFICATION 10 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
9 V, 20 A / 180 W Electrical Specification BMR 454 00 00/002
Efficiency Power Dissipation
80
85
90
95
100
0 5 10 15 20 [A]
[% ]
36 V
48 V
53 V
75 V
0
2
4
6
8
10
12
14
0 5 10 15 20 [A]
[W]
36 V
48 V
53 V
75 V
Efficiency vs. load current and input voltage at Tref = +25C Dissipated power vs. load current and input voltage at
Tref = +25°C
Output Current Derating, open frame Output Current Derating, base plate op tion
0
5
10
15
20
25
0 20 40 60 80 100 [°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
5
10
15
20
25
0 20 40 60 80 100 [°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.
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
10
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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
14
Ericsson Internal
PRODUCT SPECIFICATION 11 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
9 V, 20 A / 180 W Electrical Specification BMR 454 0000/002
Output Characteristics Current Limit Characteristics
8.90
8.94
8.98
9.02
9.06
9.10
0 5 10 15 20 [A]
[V]
36 V
48 V
53 V
75 V
0.00
3.00
6.00
9.00
20 22 24 26 28 [A]
[V]
36 V
48 V
53 V
75 V
Output voltage vs. load current at Tref = +25°C Output voltage vs. load current at IO > max IO , Tref = +25°C
Start-up Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 53 V,
IO = 20 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:
Tref = +25°C, VI = 53 V,
IO =20 A resistive load.
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (0.5 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
Tref = +25°C, VI = 53 V,
IO = 20 A resistive load.
Trace: output voltage (20 mV/div.).
Time scale: (2 µs/div.). Output voltage response to load current step-
change (5 - 15 - 5 A) at:
Tref =+25°C, VI = 53 V. Co = 2.2 mF
Top trace: output voltage (0.5 V/div.).
Bottom trace: output current (10 A/div.).
Time scale: (0.5 ms/div.).
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
15
Ericsson Internal
PRODUCT SPECIFICATION 12 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
12 V, 20 A / 240 W Electrical Specification BMR 454 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 VI max IO, unless otherwise specified under Conditions.
Additional Cout = 0.1 mF, Configuration File: 190 10-CDA 102 1900/001 rev A
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 11 μF
PO Output power 0 240 W
50% of max IO 95.6
max IO 95.0
50% of max IO, VI = 48 V 95.7
η Efficiency
max IO, VI = 48 V 95.0
%
Pd Power Dissipation max IO 12.7 17.1 W
Pli Input idling power IO = 0 A, VI = 53 V 2.7 W
PRC Input standby power VI = 53 V (turned off with RC) 184 mW
fs 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 = 20 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 80 mV
VO
Load regulation VI = 53 V, 0-100% of max IO 6 45 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 VI shut-down fall time
(from VI off to 10% of VO) IO = 0 A 5 s
RC start-up time max IO 55 ms
max IO 2.4 ms
tRC RC shut-down fall time
(from RC off to 10% of VO) IO = 0 A 5 s
IO Output current 0 20 A
Ilim Current limit threshold VO = 10.8 V , TP1 < max Tref 21 25 28 A
Isc Short circuit current TP1 = 25ºC, see Note 4 4 5 A
Cout Recommended Capacitive Load TP1 = 25ºC, see Note 5 0.1 2.2 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 = 2.2 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: OCP in hiccup mode
Note 5: Low ESR-value
Note 6: OVP-level can be adjusted via PMBus, see Operation Information section.
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
16
Ericsson Internal
PRODUCT SPECIFICATION 13 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
12 V, 20 A / 240 W Typical Characteristics BMR 4 54 0000/001
Efficiency Power Dissipation
80
85
90
95
100
0 5 10 15 20 [A]
[%]
40 V
48 V
53 V
75 V
0
2
4
6
8
10
12
14
05101520[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 Derating, base plate option
0
5
10
15
20
25
0 20 40 60 80 100 [°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
5
10
15
20
25
0 20 40 60 80 100 [°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.
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
10
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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
17
Ericsson Internal
PRODUCT SPECIFICATION 14 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
12 V, 20 A / 240 W Electrical Specification BMR 454 0000/001
Output Characteristics Current Limit Characteristics
11.80
11.90
12.00
12.10
12.20
0 5 10 15 20 [A]
[V]
40 V
48 V
53 V
75 V
0.00
3.00
6.00
9.00
12.00
20 22 24 26 28 [A]
[V]
40 V
48 V
53 V
75 V
Output voltage vs. load current at Tref = +25°C Output voltage vs. load current at IO > max IO , Tref = +25°C
Start-up Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 53 V,
IO = 20 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:
Tref = +25°C, VI = 53 V,
IO =20 A resistive load.
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (0.5 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
Tref = +25°C, VI = 53 V,
IO = 20 A resistive load.
Trace: output voltage (20 mV/div.).
Time scale: (2 µs/div.). Output voltage response to load current step-
change (5 - 15 - 5 A) at:
Tref =+25°C, VI = 53 V. Co = 2.2 mF
Top trace: output voltage (0.5 V/div.).
Bottom trace: output current (10 A/div.).
Time scale: (0.5 ms/div.).
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
18
Ericsson Internal
PRODUCT SPECIFICATION 15 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
12 V, 20 A / 240 W Electrical Specification BMR 454 0004/005
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 VI max IO, unless otherwise specified under Conditions.
Additional Cout = 0.1 mF, Configuration File: 190 10-CDA 102 1900/005 rev A
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 11 μF
PO Output power 0 240 W
50% of max IO 94.8
max IO 94.9
50% of max IO, VI = 48 V 95.1
η Efficiency
max IO, VI = 48 V 94.9
%
Pd Power Dissipation max IO 13.0 17.8 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) 123 mW
fs Switching frequency 0-100% of max IO see Note 2 171 180 189 kHz
VOi Output voltage initial setting and
accuracy TP1 = +25°C, VI = 53 V, IO = 20 A 11.88 12.0 12.12 V
Output adjust range See operating information and
Note 1 8.1 13.2 V
Output voltage tolerance band 0-100 % of max IO 11.76 12.24 V
Line regulation max IO 22 80 mV
VO
Load regulation VI = 53 V, 0-100% of max IO 15 57 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 3 250 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 4 140 ms
max IO 0.4 ms
tf VI shut-down fall time
(from VI off to 10% of VO) IO = 0 A 5 s
RC start-up time max IO 55 ms
max IO 2.4 ms
tRC RC shut-down fall time
(from RC off to 10% of VO) IO = 0 A 5 s
IO Output current 0 20 A
Ilim Current limit threshold VO = 10.8 V , TP1 < max Tref 21 25 28 A
Isc Short circuit current TP1 = 25ºC, see Note 5 4 5 A
Cout Recommended Capacitive Load TP1 = 25ºC, see Note 6 0.1 2.2 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 7 15.6 V
Note 1: For output voltage below 11V, the BMR 454 0000/XXX is recommended for better efficiency and thermal performance.
Note 2: Frequency may be adjusted with PMBus communication. See Operating Information section
Note 3: Cout = 2.2 mF used at load transient test.
Note 4: Start-up and Ramp-up time can be increased via PMBus, see Operation Information section.
Note 5: OCP in hiccup mode
Note 6: Low ESR-value
Note 7: OVP-level can be adjusted via PMBus, see Operation Information section.
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
19
Ericsson Internal
PRODUCT SPECIFICATION 16 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
12 V, 20 A / 240 W Typical Characteristics BMR 4 54 0004/005
Efficiency Power Dissipation
80
85
90
95
100
0 5 10 15 20 [A]
[%]
36 V
48 V
53 V
75 V
0
2
4
6
8
10
12
14
16
0 5 10 15 20 [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
0 20406080100[°C]
[A]
3.0 m/s
2.0 m/s
1.5 m/s
1.0 m/s
0.5 m/s
Nat.
C onv. 0
5
10
15
20
25
020406080100[°C]
[A]
3.0 m/s
2.0 m/s
1.5 m/s
1.0 m/s
0.5 m/s
Nat.
C onv.
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
10
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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
20
Ericsson Internal
PRODUCT SPECIFICATION 17 (21)
Prepared (also subject responsible if other) No.
EMAOLII 2/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2011-07-15 F
12 V, 20 A / 240 W Electrical Specification BMR 454 0004/005
Output Characteristics Current Limit Characteristics
11.80
11.90
12.00
12.10
12.20
0 5 10 15 20 [A]
[V]
36 V
48 V
53 V
75 V
0.00
3.00
6.00
9.00
12.00
20 22 24 26 28 [A]
[V]
36 V
48 V
53 V
75 V
Output voltage vs. load current at Tref = +25°C Output voltage vs. load current at IO > max IO , Tref = +25°C
Start-up Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 53 V,
IO = 20 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:
Tref = +25°C, VI = 53 V,
IO =20 A resistive load.
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (0.5 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
Tref = +25°C, VI = 53 V,
IO = 20 A resistive load.
Trace: output voltage (20 mV/div.).
Time scale: (2 µs/div.). Output voltage response to load current step-
change (5 - 15 - 5 A) at:
Tref =+25°C, VI = 53 V. Co = 2.2 mF
Top trace: output voltage (0.5 V/div.).
Bottom trace: output current (10 A/div.).
Time scale: (0.5 ms/div.).
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
21
Ericsson Internal
PRODUCT SPECIFICATION 1 (7)
Prepared (also subject responsible if other) No.
ESHNMAA 30/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-07-20 G
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
180 kHz for BMR 454 at VI = 53 V, max IO.
Conducted EMI Input terminal value (typ)
EMI without filter
External filter (class B)
Required 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 F
C2 = 1 F
C3 = 1 F + 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 recommendations
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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
22
Ericsson Internal
PRODUCT SPECIFICATION 2 (7)
Prepared (also subject responsible if other) No.
ESHNMAA 30/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-07-20 G
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
on the primary and secondary side.
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.
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 m across the output connections.
For further information please contact your local Ericsson
Power Modules representative.
Parallel Operation
The products can be paralleled for redundancy if external
oring diodes are used in series with the output.
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. Both BMR 454 0000/XXX and BMR 454
0004/005 can be adjusted from 8.1 V to 13.2 V. However, if
output voltages above 11 V are desired at full load and at
input below 40 V, the BMR4540004/005 should be used.
When output voltages below 11V are desired or the limited
input range (40-75 V) is acceptable, the BMR4540000/XXX is
recommended for better efficiency and thermal performance.
The BMR 454 0002/XXX can be adjusted from 3.0 V to 6.7 V
at input voltages from 36 V to 75 V.
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
23
Ericsson Internal
PRODUCT SPECIFICATION 3 (7)
Prepared (also subject responsible if other) No.
ESHNMAA 30/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-07-20 G
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-
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 BMR454 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 hiccup 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 m. The OCP level and fault response
can be re-configured using the PMBus interface.The default
configuration is set to hiccup mode for the OCP. Brick wall
OCP mode is also supported in BMR454 series as option.
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.
Synchronization
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. The incoming clock signal must be 150, 200 or 250
kHz and must be stable when the module is enabled. Note
that PG SYNC pin is by default configured as Power Good
output but may be reconfigured to SYNC IN via the PMBus
interface.
Power Good
The PG SYNC pin is by default configured as Power Good
output. The power good signal (TTL level) indicates proper
operation of the product and can also be used as an error flag
indicator. The Power Good signal is by default configured as
active low and can be re-configured via the PMBus interface.
Tracking and External refer en ce
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.
Vin
RC_on
RC_off
RC_on
RC_off
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
24
Ericsson Internal
PRODUCT SPECIFICATION 4 (7)
Prepared (also subject responsible if other) No.
ESHNMAA 30/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-07-20 G
Switching frequency adjust using PMBus
The switching frequency is set to 180 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
frequency, (150 kHz – 250 kHz). The electrical performance
can be affected if the switching frequency is changed.
Input Transient
The BMR454 products have limited ability to react on sudden
input voltage changes. As an example the 12 V module
BMR454xxxx/001 can have an output voltage deviation of
5 V when a 20V 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.
BMR4540000/001 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]
Output voltage regulation vs input voltage at: TP1 = +25°C, IO
= 20 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 20 A is maximum load current at start-up)
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
25
Ericsson Internal
PRODUCT SPECIFICATION 5 (7)
Prepared (also subject responsible if other) No.
ESHNMAA 30/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-07-20 G
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
and P3. The temperature at these positions (TP1, TP2 and TP3)
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 are not
allowed and may cause permanent damage.
Position Description Max Temperature
P1 PCB (Reference point) TP1=125º C
P2 Opto-coupler TP2=105º C
P3 PCB (Output inductor) TP3=125º C
P4 Transformer core TP4=125º C
P1
P3
P2
P4
Top view Bottom view
(Best airflow direction Negative to Positive.)
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/) - 1) × output power = power losses (Pd).
= 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 b e 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 454 0100/001 at 1m/s:
1. (( ) - 1) × 240 W = 15.3 W
2. 15.3 W × 4.1°C/W = 63°C
3. 125 °C - 63°C = max ambient temperature is 62°C
The actual temperature will be dependent on several factors
such as the PCB size, number of layers and direction of
airflow.
1
0.94
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
26
Ericsson Internal
PRODUCT SPECIFICATION 6 (7)
Prepared (also subject responsible if other) No.
ESHNMAA 30/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) SECSUND 2012-07-20 G
Connections (Top vi ew)
Pin Designation Function
1 +In Positive Input
2 RC Remote Control
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
16 +Out Positive Output
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
27
Ericsson Internal
PRODUCT SPECIFICATION
1 (4)
Prepared (also subject responsible if other)
No.
ESHNMAA 31/1301-BMR 453+
Approved
Checked
Date
Rev
Reference
SEC/D (Julia You)
SECSUND
2012-05-02
B
PMBus Communications
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. The products
can be used with any standard
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 continuous fault monitoring.
Monitoring via PMBus
A system controller can monitor a wide variety of different
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 conversion
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 representative.
Addressing
The figure and table below show recommended resistor
values
with min and max voltage range for hard-wiring PMBus
addresses (series E
96, 1% tolerance resistors suggested):
SA0/SA1
R1 /R0 [kΩ]
0
24.9
1
49.9
2
75
3
100
4
124
5
150
The SA0 and SA1 pins can be configured with a resistor to
GND according to the following equation.
PMBus Address = 8 x (SA0value) + (SA1 value)
If any one of those voltage applied to ADC0 and ADC1 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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
28
Ericsson Internal
PRODUCT SPECIFICATION
2 (4)
Prepared (also subject responsible if other)
No.
ESHNMAA 31/1301-BMR 453+
Approved
Checked
Date
Rev
Reference
SEC/D (Julia You)
SECSUND
2012-05-02
B
PMBus Commands
The DC/DC converter is PMBUS compliant. The following table
lists the implemented PMBus commands. For more detailed
information see PMBus Power System Management Protocol
Specification; Part I
– General Requirements, Transport and
Electrical Interface and PMBus Power System Management
Protocol
; Part II – Command Language.
Designation
Cmd
Impl
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
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 Yes
note1
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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
29
Ericsson Internal
PRODUCT SPECIFICATION
3 (4)
Prepared (also subject responsible if other)
No.
ESHNMAA 31/1301-BMR 453+
Approved
Checked
Date
Rev
Reference
SEC/D (Julia You)
SECSUND
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 Commands
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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
30
Ericsson Internal
PRODUCT SPEC. MECHANICAL
1 (4)
Prepared (also subject responsible if other)
No.
EPEIHLI 4/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) See §1
2012-06-21 E
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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
31
Ericsson Internal
PRODUCT SPEC. MECHANICAL
2 (4)
Prepared (also subject responsible if other)
No.
EPEIHLI 4/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) See §1 2012-06-21 E
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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
32
Ericsson Internal
PRODUCT SPEC. MECHANICAL
3 (4)
Prepared (also subject responsible if other)
No.
EPEIHLI 4/1301-BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) See §1 2012-06-21 E
Mechanical Information- Surface Mounting 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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
33
Ericsson Internal
PRODUCT SPEC.
1 (5)
Prepared (also subject responsible if other)
No.
EPEIHLI 5/1301 - BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) See §1 2012-07-27 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 PWB 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.
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
60 s
60 s
Minimum pin temperature
TPIN
210°C
235°C
Peak product temperature
TPRODUCT
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
T
PRODUCT
maximum
T
PIN
minimum
Time
Pin
profile
Product
profile
T
L
Time in
reflow
Time in preheat
/ soak zone
Time 25°C to peak
Temperature
Minimum Pin Temperature Recommendations
Pin number 5 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 (T
PIN
) in excess
of the solder melting temperature, (TL, 183
°C for Sn63Pb37) for
more than 60 seconds and a peak temperature of 220°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.
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 60 seconds and a peak
temperature of 245°C on all solder joints is recommended to
ensure a reliable solder joint.
Maximum Product Temperature Requirements
Top of the product PWB 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 any 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 Attachment
Top of PWB near pin 2 for measurement of maximum product
temperature, TPRODUCT
Pin 5 for measurement of minimum pin (solder joint) temperature, T
PIN
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
34
Ericsson Internal
PRODUCT SPEC.
2 (5)
Prepared (also subject responsible if other)
No.
EPEIHLI 5/1301 - BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) See §1 2012-07-27 D
Soldering Information - Hole Mounting
The hole mounted product is intended for plated through hole
mounting by wave or manual sol
dering. 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
The products are delivered in antistatic injection molded trays
(Jedec design guide 4.10D standard) and in antistatic trays.
Tray Specifications – SMD /Pin in paste
Material
Antistatic PPE
Surface resistance 10
5
< Ohm/square < 10
12
Bakability
The trays can be baked at maximum
125°C for 48 hours
Tray thickness
17.40 mm 0.685 [ inch]
Box capacity 100 products (5 full trays/box)
Tray weight
125 g empty, 605 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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
35
Ericsson Internal
PRODUCT SPEC.
3 (5)
Prepared (also subject responsible if other)
No.
EPEIHLI 5/1301 - BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) See §1 2012-07-27 D
Tray Specifications – Through hole Version
Material
PE Foam, dissipative
Surface
resistance
105 < Ohm/square < 1012
Bakability
The trays are not bakeable
Tray capacity
25 converters/tray
Box capacity
75 products (3 full trays/box)
Weight
Product – Open frame
790 g full tray, 140g empty tray
Product – Base plate option
1090 g full tray, 140 g empty tray
E
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
36
Ericsson Internal
PRODUCT SPEC.
4 (5)
Prepared (also subject responsible if other)
No.
EPEIHLI 5/1301 - BMR 454 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) See §1 2012-07-27 D
Product Qualification Specification
Characteristics
External visual inspection IPC-A-610
Change of temperature
(Temperature cycling) IEC 60068-2-14 Na
Temperature range
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 T
A
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
BMR454 series Fully regulated Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 240 W
EN/LZT 146 404 R7A March 2013
© Ericsson AB
Technical Specification
37
