BMR4540004/005 - Ericsson Power Modules

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

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

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

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.

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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).

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.

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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.

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

Control

RC isolation

Auxillary

Supply

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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.

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

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.

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

10 0

0 5 10 15 20 25 30 35 40 [A ]

[%]

36 V

48 V

53 V

75 V

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 = +25C Dissipated power vs. load current and input voltage at

Tref = +25°C

Output Current Derating, open frame Output Current Derating, base plate option

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 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

0,0 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

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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.).

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

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.

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

100

0 5 10 15 20 25 30 35 [A]

[%]

36 V

48 V

53 V

75 V

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 = +25C Dissipated power vs. load current and input voltage at

TP1 = +25°C

Output Current Derating, open frame Output Current Derating, base plate option

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 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

0,0 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

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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.).

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

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.

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

100

0 5 10 15 20 [A]

[% ]

36 V

48 V

53 V

75 V

0 5 10 15 20 [A]

[W]

36 V

48 V

53 V

75 V

Efficiency vs. load current and input voltage at Tref = +25C 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 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 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

0,0 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

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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.).

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

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.

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

100

0 5 10 15 20 [A]

[%]

40 V

48 V

53 V

75 V

05101520[A]

[W]

40 V

48 V

53 V

75 V

Efficiency vs. load current and input voltage at TP1 = +25C Dissipated power vs. load current and input voltage at

TP1 = +25°C

Output Current Derating, open frame Output Current Derating, base plate option

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 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

0,0 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

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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.).

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

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.

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

100

0 5 10 15 20 [A]

[%]

36 V

48 V

53 V

75 V

0 5 10 15 20 [A]

[W]

36 V

48 V

53 V

75 V

Efficiency vs. load current and input voltage at TP1 = +25C Dissipated power vs. load current and input voltage at

TP1 = +25°C

Output Current Derating, open frame Output Current Derating, base plate option

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

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

0.0 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

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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.).

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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.

C1 C2 C3

Module

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

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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.

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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)

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

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.

0.94

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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) 2011-03-23 A

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 j unction 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 [kΩ] Min voltage[V] Max voltage[V]

0 24.9 0.261 0.438

1 49.9 0.524 0.679

2 75 0.749 0.871

3 100 0.926 1.024

4 124 1.065 1.146

5 150 1.187 1.256

6 174 1.285 1.345

7 200 1.371 1.428

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.

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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) 2011-03-23 A

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

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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) 2011-03-23 A

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

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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.

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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.

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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.

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

Typical solder melting (liquidus)

temperature

TL 183°C 221°C

Minimum reflow time above TL

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

PRODUCT

maximum

minimum

Time

profile

Product

profile

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

) 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

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

< Ohm/square < 10

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.

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation

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

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

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

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)

BMR454 series Fully regulated Intermediate Bus Converters

Input 36-75 V, Output up to 40 A / 240 W

EN/LZT 146 404 R6A August 2012

Technical Speciﬁcation