Ericsson Internal
PRODUCT SPECIFICATION 1 (4)
Prepared (also subject responsible if other) No.
SEC/S Kevin Zhou 1/1301-BMR662 Uen
Approved Checked Date Rev Reference
MICRF 2010-05-06 B
Key Features
• Industry standard low profile Eighth-brick
58.4 x 22.7 x 8.50 mm (2.30 x 0.894 x 0.339 in)
• High efficiency, typ. 93.3% at 5.0 Vout half load
• 2250 Vdc input to output isolation
• Meets isolation requirements equivalent to basic
insulation according to IEC/EN/UL 60950
• More than 1.6 million hours MTBF
General Characteristics
• Output over voltage protection
• Input under voltage shutdown
• Over temperature protection
• Monotonic startup
• Output short-circuit protection
• Remote sense
• Remote control
• Output voltage adjust function
• Highly automated manufacturing ensures quality
• ISO 9001/14001 certified supplier
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.
EZHIXZH 001 52-EN/LZT 146 420 Uen
Approved Checked Date Rev Reference
2010-05-06 B
Contents
Ordering Information .............................................................2
General Information .............................................................2
Safety Specification .............................................................3
Absolute Maximum Ratings .............................................................4
Electrical Specification
3.3 V, 30 A / 99 W PKB 4910A ..........................................5
5.0 V, 25 A / 125 W PKB 4111A ..........................................9
EMC Specification ........................................................... 13
Operating Information ...........................................................14
Thermal Consideration ........................................................... 15
Connections ...........................................................16
Mechanical Information ...........................................................17
Soldering Information ...........................................................19
Delivery Information ...........................................................20
Product Qualification Specification ........................................................... 21
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
Ericsson Internal
PRODUCT SPECIFICATION 2 (4)
Prepared (also subject responsible if other) No.
SEC/S Kevin Zhou 1/1301-BMR662 Uen
Approved Checked Date Rev Reference
MICRF 2010-05-06 B
Ordering Information
Product program Output
PKB 4910A 3.3 V, 30 A / 99 W
PKB 4111A 5.0 V, 25 A / 125 W
Product number and Packaging
PKB 4XXXXA n1n2n3
Options n1 n2 n3
Mounting ο
Remote Control logic ο
Lead length
ο
Options Description
n1
n2
n3
PI
SI
P
LA
LB
Through hole *
Surface mount
Negative *
Positive
5.30 mm *
3.69 mm
4.57 mm
Example a through-hole mounted, negative logic, short pin
product would be PKB 4910A PILA.
* Standard variant (i.e. no option selected).
General Information
Reliability
The Mean Time Between Failure (MTBF) is calculated at
full output power and an operating ambient temperature
(TA) of +40°C, which is a typical condition in Information
and Communication Technology (ICT) equipment. Different
methods could be used to calculate the predicted MTBF
and failure rate which may give different results. Ericsson
Power Modules currently uses Telcordia SR332.
Predicted MTBF for the series is:
- 1.6 million hours according to Telcordia SR332, issue
1, Black box technique.
Telcordia SR332 is a commonly used standard method
intended for reliability calculations in ICT equipment. The
parts count procedure used in this method was originally
modelled on the methods from MIL-HDBK-217F, Reliability
Predictions of Electronic Equipment. It assumes that no
reliability data is available on the actual units and devices
for which the predictions are to be made, i.e. all predictions
are based on generic reliability parameters.
Compatibility with RoHS requirements
The products are compatible with the relevant clauses and
requirements of the RoHS directive 2002/95/EC and have a
maximum concentration value of 0.1% by weight in
homogeneous materials for lead, mercury, hexavalent
chromium, PBB and PBDE and of 0.01% by weight in
homogeneous materials for cadmium.
Exemptions in the RoHS directive utilized in Ericsson
Power Modules products include:
- Lead in high melting temperature type solder (used to
solder the die in semiconductor packages)
- Lead in glass of electronics components and in
electronic ceramic parts (e.g. fill material in chip
resistors)
- Lead as an alloying element in copper alloy containing
up to 4% lead by weight (used in connection pins
made of Brass)
Quality Statement
The products are designed and manufactured in an
industrial environment where quality systems and methods
like ISO 9000, 6σ (sigma), and SPC are intensively in use
to boost the continuous improvements strategy. Infant
mortality or early failures in the products are screened out
and they are subjected to an ATE-based final test.
Conservative design rules, design reviews and product
qualifications, plus the high competence of an engaged
work force, contribute to the high quality of our products.
Warranty
Warranty period and conditions are defined in Ericsson
Power Modules General Terms and Conditions of Sale.
Limitation of Liability
Ericsson Power Modules does not make any other
warranties, expressed or implied including any warranty of
merchantability or fitness for a particular purpose
(including, but not limited to, use in life support
applications, where malfunctions of product can cause
injury to a person’s health or life).
© Ericsson AB 2010
The information and specifications in this technical
specification is believed to be correct at the time of
publication. However, no liability is accepted for
inaccuracies, printing errors or for any consequences
thereof. Ericsson AB reserves the right to change the
contents of this technical specification at any time without
prior notice.
Safety Specification
General information
Ericsson Power Modules DC/DC converters and DC/DC
regulators are designed in accordance with safety
standards IEC/EN/UL60950, Safety of Information
Technology Equip m ent.
IEC/EN/UL60950 contains requirements to prevent injury or
damage due to the following hazards:
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
2
Ericsson Internal
PRODUCT SPECIFICATION 3 (4)
Prepared (also subject responsible if other) No.
SEC/S Kevin Zhou 1/1301-BMR662 Uen
Approved Checked Date Rev Reference
MICRF 2010-05-06 B
• Electrical shock
• Energy hazards
• Fire
• Mechanical and heat hazards
• Radiation hazards
• Chemical hazards
On-board DC-DC converters and DC/DC regulators are
defined as component power supplies. As components
they cannot fully comply with the provisions of any Safety
requirements without “Conditions of Acceptability”.
Clearance between conductors and between conductive
parts of the component power supply and conductors on
the board in the final product must meet the applicable
Safety requirements. Certain conditions of acceptability
apply for component power supplies with limited stand-off
(see Mechanical Information for further information). It is
the responsibility of the installer to ensure that the final
product housing these components complies with the
requirements of all applicable Safety standards and
Directives for the final product.
Component power supplies for general use should comply
with the requirements in IEC60950, EN60950 and UL60950
“Safety of information technology equipment”.
There are other more product related standards, e.g.
IEEE802.3af “Ethernet LAN/MAN Data terminal equipment
power”, and ETS300132-2 “Power supply interface at the
input to telecommunications equipment; part 2: DC”, but all
of these standards are based on IEC/EN/UL60950 with
regards to safety.
Ericsson Power Modules DC/DC converters and DC/DC
regulators are UL60950 recognized and certified in
accordance with EN60950.
The flammability rating for all construction parts of the
products meets requirements for V-0 class material
according to IEC 60695-11-10.
The products should be installed in the end-use equipment,
in accordance with the requirements of the ultimate
application. Normally the output of the DC/DC converter is
considered as SELV (Safety Extra Low Voltage) and the
input source must be isolated by minimum Double or
Reinforced Insulation from the primary circuit (AC mains) in
accordance with IEC/EN/UL60950.
Isolated DC/DC converters
It is recommended that a slow blow fuse with a rating twice
the maximum input current per selected product be used 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 in the input filter
or in the DC/DC converter that imposes a short circuit on
the input source, this fuse will provide the following
functions:
• Isolate the faulty DC/DC converter from the input
power source so as not to affect the operation of
other parts of the system.
• Protect the distribution wiring from excessive
current and power loss thus preventing hazardous
overheating.
The galvanic isolation is verified in an electric strength test.
The test voltage (Viso) between input and output is
1500 Vdc or 2250 Vdc for 60 seconds (refer to product
specification).
Leakage current is less than 1 µA at nominal input voltage.
24 V DC systems
The input voltage to the DC/DC converter is SELV (Safety
Extra Low Voltage) and the output remains SELV under
normal and abnormal operating conditions.
48 and 60 V DC systems
If the input voltage to the DC/DC converter is 75 Vdc or
less, then the output remains SELV (Safety Extra Low
Voltage) under normal and abnormal operating conditions.
Single fault testing in the input power supply circuit should
be performed with the DC/DC converter connected to
demonstrate that the input voltage does not exceed
75 Vdc.
If the input power source circuit is a DC power system, the
source may be treated as a TNV2 circuit and testing has
demonstrated compliance with SELV limits and isolation
requirements equivalent to Basic Insulation in accordance
with IEC/EN/UL60950.
Non-isolated DC/DC regulators
The input voltage to the DC/DC regulator is SELV (Safety
Extra Low Voltage) and the output remains SELV under
normal and abnormal operating conditions.
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
3
Ericsson Internal
PRODUCT SPECIFICATION 1 (10)
Prepared (also subject responsible if other) No.
EAB/FJB/GMF Oscar Persson 2/1301 BMR 662 Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Natalie Johansson] (MICRF) 2010-05-04 B
Absolute Maximum Ratings
Characteristics min typ max Unit
TP1 Operating Temperature (see Thermal Consideration section) -40 +125 °C
TS Storage temperature -55 +110 °C
VI Input voltage -0.5 +80 V
Viso Isolation voltage (input to output test voltage) 2250 Vdc
Vtr Input voltage transient (tp 100 ms) 100 V
Positive logic option 0 40 V
VRC Remote Control pin voltage
(see Operating Information section) Negative logic option 0 40 V
Vadj Adjust pin voltage (see Operating Information section) -0.5 2xVoi 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 in the Electrical Specification. If exposed to stress above these limits, function and performance
may degrade in an unspecified manner.
Fundamental Circuit Diagram
Bias supply
and OTP Isolated
Feedback
Primary
Driver
+ In
RC
- In
+ Out
Secondary
Driver
Control and
Supervision
+ Sense
- Sense
- Out
Vadj
Primary Secondary
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
4
Ericsson Internal
PRODUCT SPECIFICATION 2 (10)
Prepared (also subject responsible if other) No.
EAB/FJB/GMF Oscar Persson 2/1301 BMR 662 Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Natalie Johansson] (MICRF) 2010-05-04 B
3.3V, 30A /99W Electrical Specification PKB 4910A PI
TP1 = -30 to +90ºC, VI = 38 to 72 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 Cin = 33 µF. See Operating Information section for selection of capacitor types.
Characteristics Conditions min typ max Unit
VI Input voltage range 38 72 V
VIoff Turn-off input voltage Decreasing input voltage 30 31 32 V
VIon Turn-on input voltage Increasing input voltage 33 34 35 V
CI Internal input capacitance 5.7 µF
PO Output power 0 99 W
50 % of max IO 92.4
max IO 91.0
50 % of max IO, VI = 48 V 92.7
η Efficiency
max IO, VI = 48 V 91.0
%
Pd Power Dissipation max IO 9.8 14 W
Pli Input idling power IO = 0 A, VI = 53 V 1.8 W
PRC Input standby power VI = 53 V (turned off with RC) 0.1 W
fs Switching frequency 0-100 % of max IO 162 180 198 kHz
VOi Output voltage initial setting and
accuracy TP1 = +25°C, VI = 53 V, IO = 30 A 3.23 3.30 3.37 V
Output adjust range See operating information 2.64 3.63 V
Output voltage tolerance band 0-100 % of max IO 3.2 3.4 V
Line regulation max IO ±3 ±10 mV
VO
Load regulation VI = 53 V, 0-100 % of max IO ±5 ±10 mV
Vtr Load transient
voltage deviation ±200 ±350 mV
ttr Load transient recovery time
VI = 53 V, Load step 25-75-25 % of
max IO, di/dt = 1 A/µs
See Note 1 40 µs
tr Ramp-up time
(from 10−90 % of VOi) 8 ms
ts Start-up time
(from VI connection to 90 % of VOi)
0-100 % of max IO
12 ms
max IO 50 µs
tf VI shut-down fall time
(from VI off to 10 % of VO) IO = 0 A 5 s
RC start-up time max IO 12 ms
max IO 37 µs
tRC RC shut-down fall time
(from RC off to 10 % of VO) IO = 0 A 5 s
IO Output current 0 30 A
Ilim Current limit threshold TP1 < max TP1 40 A
Isc Short circuit current TP1 = 25ºC, see Note 2 45 A
Cout Recommended Capacitive Load TP1 = 25ºC, see Note 3 0 3000 µF
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, 0-100 % of
max IO 3.8 4.3 4.8 V
Note 1: 3000 uF; ESR value 5 mΩ
Note 2: Constant current Vo < 0.5 V
Note 3: See Operating Information Section
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
5
Ericsson Internal
PRODUCT SPECIFICATION 3 (10)
Prepared (also subject responsible if other) No.
EAB/FJB/GMF Oscar Persson 2/1301 BMR 662 Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Natalie Johansson] (MICRF) 2010-05-04 B
3.3V, 30A /99W Typical Characteristics PKB 4910A PI
Efficiency Power Dissipation
70
75
80
85
90
95
0 5 10 15 20 25 30 [A]
[%]
38 V
48 V
53 V
72 V
0
2
4
6
8
10
12
0 5 10 15 20 25 30 [A ]
[W]
38 V
48 V
53 V
72 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 Characteristics Current Limit Characteristics
3,20
3,25
3,30
3,35
3,40
0 5 10 15 20 25 30 [A]
[V]
38 V
48 V
53 V
72 V
0,00
0,50
1,00
1,50
2,00
2,50
3,00
3,50
30 35 40 45 50 [A]
[V]
38 V
48 V
53 V
72 V
Output voltage vs. load current at TP1 = +25°C Output voltage vs. load current at IO > max IO , TP1 = +25°C
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
6
Ericsson Internal
PRODUCT SPECIFICATION 4 (10)
Prepared (also subject responsible if other) No.
EAB/FJB/GMF Oscar Persson 2/1301 BMR 662 Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Natalie Johansson] (MICRF) 2010-05-04 B
3.3V, 30A /99W Typical Characteristics PKB 4910A PI
Start-up Shut-down
Start-up enabled by connecting VI at:
TP1 = +25°C, VI = 53 V,
IO = 30 A resistive load.
Top trace: output voltage (1 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (5 ms/div.).
Shut-down enabled by disconnecting VI at:
TP1 = +25°C, VI = 53 V,
IO = 30 A resistive load.
Top trace: output voltage (1 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (50 us/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
TP1 = +25°C, VI = 53 V,
IO = 30 A resistive load.
Trace: output voltage (20 mV/div.).
Time scale: (2 µs/div.).
Output voltage response to load current step-
change (7.5-22.5-7.5 A) at:
TP1 = +25°C, VI = 53V, Co = 3mF.
Top trace: output voltage (200 mV/div.).
Bottom trace: load current (10 A/div.).
Time scale: (0.1 ms/div.).
Output Voltage Adjust (see operating information)
Passive adjust
The resistor value for an adjusted output voltage is calculated by using
the following equations:
Output Voltage Adjust Upwards, Increase:
()
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛−
∆
−
∆×
∆+×
=2.10
%
510
%225.1
%10030.31.5
Radj kΩ
Example: Increase 4% =>Vout = 3.432 Vdc
()
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛−−
×
+× 2.10
4
510
4225.1
410030.31.5 kΩ = 220 kΩ
Output Voltage Adjust Downwards, Decrease:
100
5.11 2 k
%
Radj ⎛⎞
=× −Ω
⎜⎟
∆
⎝⎠
Active adjust
The output voltage may be adjusted using a {current/voltage} applied
to the Vadj pin. This {current/voltage} is calculated by using the
following equations:
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛−
×+= 30.3
30.3
45.2225.1 Vdesired
Vadj V
Example: Upwards => 3.50 V
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛−
×+ 30.3
30.350.3
45.2225.1 V = 1.37 V
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
7
Ericsson Internal
PRODUCT SPECIFICATION 5 (10)
Prepared (also subject responsible if other) No.
EAB/FJB/GMF Oscar Persson 2/1301 BMR 662 Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Natalie Johansson] (MICRF) 2010-05-04 B
3.3V, 30A /99W Typical Characteristics PKB 4910 A PI
Output Current Derating – Open frame
0
5
10
15
20
25
30
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.
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
8
Ericsson Internal
PRODUCT SPECIFICATION 6 (10)
Prepared (also subject responsible if other) No.
EAB/FJB/GMF Oscar Persson 2/1301 BMR 662 Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Natalie Johansson] (MICRF) 2010-05-04 B
5.0V, 25A /125W Electrical Specification PKB 4111A PI
TP1 = -30 to +90ºC, VI = 38 to 72 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 Cin = 33 µF. See Operating Information section for selection of capacitor types.
Characteristics Conditions min typ max Unit
VI Input voltage range 38 72 V
VIoff Turn-off input voltage Decreasing input voltage 30 31 32 V
VIon Turn-on input voltage Increasing input voltage 33 34 35 V
CI Internal input capacitance 5.7 µF
PO Output power 0 125 W
50 % of max IO 93.3
max IO 92.6
50 % of max IO, VI = 48 V 93.5
η Efficiency
max IO, VI = 48 V 92.6
%
Pd Power Dissipation max IO 10.0 13.5 W
Pli Input idling power IO = 0 A, VI = 53 V 2.4 W
PRC Input standby power VI = 53 V (turned off with RC) 0.1 W
fs Switching frequency 0-100 % of max IO 162 180 196 kHz
VOi Output voltage initial setting and
accuracy TP1 = +25°C, VI = 53 V, IO = 25 A 4.90 5.00 5.10 V
Output adjust range See operating information (see Note
1) 4.0 5.5 V
Output voltage tolerance band 0-100 % of max IO 4.85 5.15 V
Line regulation max IO ±3 ±10 mV
VO
Load regulation VI = 53 V, 0-100 % of max IO ±3 ±10 mV
Vtr Load transient
voltage deviation ±160 ±250 mV
ttr Load transient recovery time
VI = 53 V, Load step 25-75-25 % of
max IO, di/dt = 1 A/µs
See Note 2 50 µs
tr Ramp-up time
(from 10−90 % of VOi) 9 ms
ts Start-up time
(from VI connection to 90 % of VOi)
0-100 % of max IO
13 ms
max IO 0.5 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 13 ms
max IO 0.3 ms
tRC RC shut-down fall time
(from RC off to 10 % of VO) IO = 0 A 5 s
IO Output current 0 25 A
Ilim Current limit threshold TP1 < max TP1 32 A
Isc Short circuit current TP1 = 25ºC, see Note 3 38 A
Cout Recommended Capacitive Load TP1 = 25ºC, see Note 4 0 2500 µF
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, 0-100 % of
max IO 6.3 7.4 V
Note 1: At trim-up, the minimum VI/Vout ratio must be kept, i.e. 5 % trim up require VI > 39.9 V
Note 2: 2500uF; ESR value 10mΩ
Note 3: Constant current Vo < 0.5 V
Note 4: See Operating Information Section
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
9
Ericsson Internal
PRODUCT SPECIFICATION 7 (10)
Prepared (also subject responsible if other) No.
EAB/FJB/GMF Oscar Persson 2/1301 BMR 662 Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Natalie Johansson] (MICRF) 2010-05-04 B
5.0V, 25A /125W Typical Characteristics PKB 4111A PI
Efficiency Power Dissipation
70
75
80
85
90
95
0 5 10 15 20 25 [A]
[%]
38 V
48 V
53 V
72 V
0
2
4
6
8
10
12
0 5 10 15 20 25 [A]
[W]
38 V
48 V
53 V
72 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 Characteristics Current Limit Characteristics
4,90
4,95
5,00
5,05
5,10
0 5 10 15 20 25 [A]
[V]
38 V
48 V
53 V
72 V
0,00
1,00
2,00
3,00
4,00
5,00
6,00
25,0 30,0 35,0 40,0 45,0 [A]
[V]
38 V
48 V
53 V
72 V
Output voltage vs. load current at TP1 = +25°C Output voltage vs. load current at IO > max IO , TP1 = +25°C
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
10
Ericsson Internal
PRODUCT SPECIFICATION 8 (10)
Prepared (also subject responsible if other) No.
EAB/FJB/GMF Oscar Persson 2/1301 BMR 662 Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Natalie Johansson] (MICRF) 2010-05-04 B
5.0V, 25A /125W Typical Characteristics PKB 4111A PI
Start-up Shut-down
Start-up enabled by connecting VI at:
TP1 = +25°C, VI = 53 V,
IO = 25 A resistive load.
Top trace: input voltage (20 V/div.).
Bottom trace: output voltage (2 V/div.).
Time scale: (5 ms/div.).
Shut-down enabled by disconnecting VI at:
TP1 = +25°C, VI = 53 V,
IO = 25A resistive load.
Top trace: input voltage (20 V/div.).
Bottom trace: output voltage (2 V/div.).
Time scale: (5 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
TP1 = +25°C, VI = 53 V,
IO = 25 A resistive load.
Trace: output voltage (20 mV/div.).
Time scale: (2 µs/div.).
Output voltage response to load current step-
change (6.25-18.75-6.25 A) at:
TP1 = +25°C, VI = 53V.
Top trace: output voltage (100 mV/div.).
Bottom trace: load current (10 A/div.).
Time scale: (0.2 ms/div.).
Output Voltage Adjust (see operating information)
Passive adjust
The resistor value for an adjusted output voltage is calculated by
using the following equations:
Output Voltage Adjust Upwards, Increase:
()
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛−
∆
−
∆×
∆+×
=2.10
%
510
%225.1
%10000.510.5
Radj kΩ
Example: Increase 4% =>Vout = 5.2 Vdc
()
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛−−
×
+× 2.10
4
510
4225.1
410000.510.5 kΩ = 404 kΩ
Output Voltage Adjust Downwards, Decrease:
100
5.11 2 k
%
Radj ⎛⎞
=× −Ω
⎜⎟
∆
⎝⎠
Active adjust
The output voltage may be adjusted using a {current/voltage} applied
to the Vadj pin. This {current/voltage} is calculated by using the
following equations:
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛−
×+= 00.5
00.5
45.2225.1 Vdesired
Vadj V
Example: Upwards => 5.30 V
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛−
×+ 00.5
00.530.5
45.2225.1 V = 1.37 V
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
11
Ericsson Internal
PRODUCT SPECIFICATION 9 (10)
Prepared (also subject responsible if other) No.
EAB/FJB/GMF Oscar Persson 2/1301 BMR 662 Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Natalie Johansson] (MICRF) 2010-05-04 B
5.0V, 25A / 125W Typical Characteristics PKB 4111 A PI
Output Current Derating – Open frame
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
Na t. Con v.
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
12
Ericsson Internal
PRODUCT SPECIFICATION 1 (5)
Prepared (also subject responsible if other) No.
EAB/FJB/GMF Oscar Persson 3/1301-BMR 662 00+ Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Natalie Johansson] MICJAKE 2010-04-11 B
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 PKB 4910A PINB @ 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.
Filter components:
C1,2,3 = 1 μF
C4,5 = 2.2 nF
C6,7 = 100 μF
L1,L2 = 770 μH
EMI with filter
Test set-up
Layout recommendations
The radiated EMI performance of the Product will depend on
the PCB 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 the output of the product and the
equipment ground or chassis.
A ground layer will increase the stray capacitance in the PCB
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
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
13
Ericsson Internal
PRODUCT SPECIFICATION 2 (5)
Prepared (also subject responsible if other) No.
EAB/FJB/GMF Oscar Persson 3/1301-BMR 662 00+ Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Natalie Johansson] MICJAKE 2010-04-11 B
Operating information
Input Voltage
The input voltage range 38 to 72Vdc 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 72 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 products monitor the input voltage and will turn on and
turn off at predetermined levels.
The minimum hysteresis between turn on and turn off input
voltage is 2V.
Remote Control (RC)
The products are fitted with a
remote control function referenced
to the primary negative input
connection (-In), with negative and
positive logic options available. The
RC function allows the product to
be turned on/off by an external
device like a semiconductor or
mechanical switch. The RC pin has
an internal pull up resistor to +In.
The maximum required sink current is 1 mA. When the RC pin
is left open, the voltage generated on the RC pin is
5 – 7 V or 10-13V for “P” option. 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 1V.
To turn off the converter the RC pin should be left open, or
connected to a voltage higher than 4.5 V referenced to -In. 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 second option is “positive logic” remote control, which can
be ordered by adding the suffix “P” to the end of the part
number. When the RC pin is left open, the product starts up
automatically when the input voltage is applied. Turn off is
achieved by connecting the RC pin to the -In. To ensure safe
turn off the voltage difference between RC pin and the -In pin
shall be less than 1V. The product will restart automatically
when this connection is opened.
See Design Note 021 for detailed information.
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. The
products are designed for stable operation without external
capacitors connected to the input or output. The performance
in some applications can be enhanced by addition of external
capacitance as described under External Decoupling
Capacitors.
If the input voltage source contains significant inductance, the
addition of a 100 µF capacitor across the input of the product
will ensure stable operation. The capacitor is not required
when powering the product from an input source with an
inductance below 10 µH. The minimum required capacitance
value depends on the output power and the input voltage. The
higher output power the higher input capacitance is needed.
External Decoupling Capacitors
When powering loads with significant dynamic current
requirements, the voltage regulation at the point of load can
be improved by addition decupling capacitors at the load with
>10% of the maximum recommended value found in the
electrical specification.
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. It is equally important to
use low resistance and low inductance PCB layouts and
cabling.
External decoupling capacitors will become part of the
product’s control loop. The control loop is optimized for a wide
range of external capacitance and the maximum
recommended value that could be used without any additional
analysis is found in the Electrical specification.
The ESR of the capacitors is a very important parameter.
Stable operation is guaranteed with a verified ESR value of
>10 mΩ across the output connections.
For further information please contact your local Ericsson
Power Modules representative.
Output Voltage Adjust (Vadj)
The products have an Output Voltage Adjust pin (Vadj). This
pin can be used to adjust the output voltage above or below
Output voltage initial setting.
When increasing the output voltage, the voltage at the output
pins (including any remote sense compensation ) must be
kept below the threshold of the over voltage protection, (OVP)
to prevent the product from shutting down. At increased output
voltages the maximum power rating of the product remains the
same, and the max output current must be decreased
correspondingly.
To increase the voltage the resistor should be connected
between the Vadj pin and +Sense pin. The resistor value of the
Output voltage adjust function is according to information
given under the Output section for the respective product.
To decrease the output voltage, the resistor should be
connected between the Vadj pin and –Sense pin.
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
14
Ericsson Internal
PRODUCT SPECIFICATION 3 (5)
Prepared (also subject responsible if other) No.
EAB/FJB/GMF Oscar Persson 3/1301-BMR 662 00+ Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Natalie Johansson] MICJAKE 2010-04-11 B
Parallel Operation
Two products may be paralleled for redundancy if the total
power is equal or less than PO max. It is not recommended to
parallel the products without using external current sharing
circuits.
See Design Note 006 for detailed information.
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 output pins and the point of load.
If the remote sense is not needed +Sense should be
connected to +Out and -Sense should be connected to -Out.
Over Temperature Protection (OTP)
The products are protected from thermal overload by an
internal over temperature shutdown circuit.
When TP1 as defined in thermal consideration section exceeds
140°C 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 >15°C below the temperature threshold.
Over Voltage Protection (OVP)
The products have output over voltage protection that will shut
down the product in over voltage conditions. The product will
make continuous attempts to start up (non-latching mode) and
resume normal operation automatically after removal of the
over voltage condition.
Over Current Protection (OCP)
The products include current limiting circuitry for protection at
continuous overload. The output voltage will decrease towards
zero for output currents in excess of max output current (max
IO). The product will resume normal operation after removal of
the overload. The load distribution should be designed for the
maximum output short circuit current specified.
Pre-bias Start-up
The products do not support pre-biased start up with zero
reverse current.
Thermal Consideration
General
The products are designed to operate in different thermal
environments and sufficient cooling must be provided to
ensure reliable operation.
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),
16-layer test board mounted vertically in a wind tunnel with a
cross-section of 608 x 203 mm.
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
15
Ericsson Internal
PRODUCT SPECIFICATION 4 (5)
Prepared (also subject responsible if other) No.
EAB/FJB/GMF Oscar Persson 3/1301-BMR 662 00+ Uen
Approved Checked Date Rev Reference
EAB/FJB/GMF [Natalie Johansson] MICJAKE 2010-04-11 B
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 P2. The temperature at these positions (TP1, TP2 , 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 Temp.
P1 Mosfet pin TP1=130º C
P2 Opto coupler (case) TP2=110º C
P3 Transformer TP3=130º C
Open frame
Connections
Pin Designation Function
1 +In Positive input
2 RC Remote control
3 -In Negative input
4 -Out Negative output
5 -Sen Negative remote sense
6 Vadj Output voltage adjust
7 +Sen Positive remote sense
8 +Out Positive output
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
16
Ericsson Internal
PRODUCT SPEC. MECHANICAL 1 (3)
Prepared (also subject responsible if other) No.
EPETSCH 4/1301 - BMR 662 Uen
Approved Checked Date Rev Reference
EAB/FJB/GM [Natalie J] See §1 2010-01-18 A
Mechanical Information - SMD, Open Frame Versi on
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
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
17
Ericsson Internal
PRODUCT SPEC. MECHANICAL 2 (3)
Prepared (also subject responsible if other) No.
EPETSCH 4/1301 - BMR 662 Uen
Approved Checked Date Rev Reference
EAB/FJB/GM [Natalie J] See §1 2010-01-18 A
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
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
18
Ericsson Internal
PROD. SPECIFICATION MECHANICAL 1 (4)
Prepared (also subject responsible if other) No.
EPETSCH 5/1301-BMR 662 Uen
Approved Checked Date Rev Reference
EAB/FJB/GM [Natalie J] See §1 2010-01-18 A
Soldering Information - Surface Mounting
The surface mount version of the product is intended for
convection or vapor phase reflow SnPb and Pb-free
processes. To achieve a good and reliable soldering result,
make sure to follow the recommendations from the solder
paste supplier, to use state-of-the-art reflow equipment and
reflow profiling techniques as well as the following guidelines.
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 cleanin
g
residues ma
y
affect
long time reliability and isolation voltage.
Minimum Pin Temperature Recommendations
Pin number 4 is chosen as reference location for the minimum
pin temperature recommendations since this will likely be the
coolest solder joint during the reflow process.
SnPb solder processes
For SnPb solder processes, a pin temperature (TPIN) in excess
of the solder melting temperature, (TL, +183°C for Sn63/Pb37)
for more than 30 seconds, and a peak temperature of +210°C
is recommended to ensure a reliable solder joint.
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 Sn/Ag/Cu solder alloys) for more than 30 seconds, and a
peak temperature of +235°C on all solder joints is
recommended to ensure a reliable solder joint.
Peak Product Temperature Requirements
Pin number 2 is chosen as reference location for the
maximum (peak) allowed product temperature (TP) since this
will likel
y
be the warmest part of the product durin
g
the reflow
process.
To avoid dama
g
e or performance de
g
radation of the product,
the reflow profile should be optimized to avoid excessive
heatin
g
. A sufficientl
y
extended preheat time is recommended
to ensure an even temperature across the host PCB, for both
small and large devices. To reduce the risk of excessive
heating is also recommended to reduce the time in the reflow
zone as much as possible.
SnPb solder processes
For SnPb solder processes, the product is qualified for MSL 1
according to IPC/JEDEC standard J-STD-020C.
During reflow, TP must not exceed +225°C at any time.
Lead-free (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, TP must not exceed +260°C at any time.
25 °C Time
Temperature
Ramp-down
(cooling)
Ramp-up
Reflow
Preheat
Time 25 °C to pea
k
TP
TL
Reflow process specifications Sn/Pb eutectic Pb-free
Average ramp-up rate 3°C/s max 3°C/s max
Solder melting
temperature (typical)
TL +183°C +221°C
Minimum time above TL 30 s 30 s
Minimum pin temperature TPIN +210°C +235°C
Peak product temperature TP +225°C +260°C
Average ramp-down rate 6°C/s max 6°C/s max
Time 25°C to peak 6 minutes max 8 minutes max
Pin 2 for measurement of maximum
Peak product reflow temperature, TPIN
Pin 4 for measurement of minimum
Solder joint temperature, TPIN
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
19
Ericsson Internal
PROD. SPECIFICATION MECHANICAL 2 (4)
Prepared (also subject responsible if other) No.
EPETSCH 5/1301-BMR 662 Uen
Approved Checked Date Rev Reference
EAB/FJB/GM [Natalie J] See §1 2010-01-18 A
Soldering Information — Through Hole Mounting
The through hole mount version of the product is intended for
manual or wave soldering. When wave soldering is used, the
temperature on the pins is specified to maximum 270°C for
maximum 10 seconds.
A maximum preheat rate of 4°C/s and a temperature of max
+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 cleanin
g
residues ma
y
affect
long time reliability and isolation voltage.
Delivery Package Information, Surface Mount
Version
The surface mount versions of the products are delivered in
antistatic injection molded trays (Jedec design guide 4.10D
standard.
Tray Specifications
Material PPE, Antistatic
Surface resistance 105 < Ohm/square < 1012
Bakability The trays can be baked at maximum
125°C for 48 hours
Tray capacity 20 products/tray
Tray thickness 13.4 mm [0.528 inch]
Box capacity 100 products (5 full trays/box)
Tray weight 110 g empty, 530 g full tray
Delivery Package Information, Through Hole
Mounting Version
The products are delivered in antistatic clamshell.
Clamshell Specifications
Material PET with antistatic coated
Surface resistance 106 < Ohm/square < 1012
Bake ability The clamshells are not bake-able.
Clamshell capacity 20 products/clamshell
Clamshell thickness 20 mm [0.787 inch]
Box capacity 100 products (5 full trays/box)
Clamshell weight 130 g empty, 530 g full tray
Non-Dry Pack Information
The through hole mount version of product is delivered in
non-dry packing clamshells.
Dry Pack Information
The surface mount versions of the products are delivered in
trays These inner shipment containers are dry packed 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.
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
20
Ericsson Internal
PROD. SPECIFICATION MECHANICAL 3 (4)
Prepared (also subject responsible if other) No.
EPETSCH 5/1301-BMR 662 Uen
Approved Checked Date Rev Reference
EAB/FJB/GM [Natalie J] See §1 2010-01-18 A
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 TA
Duration
-45°C
72 h
Damp heat IEC 60068-2-67 Cy Temperature
Humidity
Duration
+85°C
85 % RH
1000 hours
Dry heat IEC 60068-2-2 Bd Temperature
Duration
+125°C
1000 h
Electrostatic discharge
susceptibility
IEC 61340-3-1, JESD 22-A114
IEC 61340-3-2, JESD 22-A115
Human body model (HBM)
Machine Model (MM)
Class 2, 2000 V
Class 3, 200 V
Immersion in cleaning solvents IEC 60068-2-45 XA
Method 2
Water
Glycol ether
Isopropyl alcohol
+55°C
+35°C
+35°C
Mechanical shock IEC 60068-2-27 Ea Peak acceleration
Duration
100 g
6 ms
Moisture reflow sensitivity 1 J-STD-020C Level 1 (SnPb-eutectic)
Level 3 (Pb Free)
225°C
260°C
Operational life test MIL-STD-202G method 108A Duration 1000 h
Resistance to soldering heat 2 IEC 60068-2-20 Tb
Method 1A
Solder temperature
Duration
270°C
10-13 s
Robustness of terminations
IEC 60068-2-21 Test Ua1
IEC 60068-2-21 Test Ue1
Through hole mount products
Surface mount products
All leads
All leads
Solderability
IEC 60068-2-58 test Td 1
IEC 60068-2-20 test Ta 2
Preconditioning
Temperature, SnPb Eutectic
Temperature, Pb-free
Preconditioning
Temperature, SnPb Eutectic
Temperature, Pb-free
150°C dry bake 16 h
215°C
235°C
Steam ageing
235°C
245°C
Vibration, broad band random IEC 60068-2-64 Fh, method 1 Frequency
Spectral density
Duration
10 to 500 Hz
0.07 g2/Hz
10 min in each perpendicular
direction
Note 1: Only for products intended for reflow soldering (surface mount products)
Note 2: Only for products intended for wave soldering (plated through hole products)
E
PKB 4000A series Direct Converters
Input 38-72 V, Output up to 30 A / 125 W
EN/LZT 146 420 R2A May 2010
© Ericsson AB
Technical Specification
21
