Ericsson Internal
TABLE OF CONTENTS 1 (1)
Prepared (also subject responsible if other) No.
SEC/S/Stella TAO 00152-EN/LZT146 352 Ue n
Approved Checked Date Rev Reference
SEC/S/Stella TAO 2007-8-23 B
Contents
General Information ............................................................. 2
Safety Specification ............................................................. 3
Absolute Maximum Ratings ............................................................. 4
Product Program Ordering No.
3.3 V, 2.0 A / 6.6W Electrical Specification PKR 2610A SI ............................................................. 5
5.0 V, 2.0 A / 10W Electrical Specification PKR 2111A SI ............................................................. 8
12.0 V, 1.0 A / 12W Electrical Specification PKR 2113A SI ........................................................... 11
+12.0 V, 0.62A / -12V, 0.62A / 15W Electrical Specification PKR 2221A SI ........................................................... 14
EMC Specification ........................................................... 17
Operating Information ........................................................... 18
Thermal Consideration ........................................................... 19
Connections ........................................................... 20
Mechanical Information ........................................................... 21
Soldering Information ........................................................... 24
Delivery Information ........................................................... 26
Product Qualification Specification ........................................................... 27
Ericsson Internal
PRODUCT SPECIFICATION 1 (3)
Prepared (also subject responsible if other) No.
SEC/S/ Stella TAO 1/1301-BMR6401211+ Uen
Approved Checked Date Rev Reference
SEC/S/ Stella TAO (MICJOHN) 2007-09-18 D
Key Features
Industry standard MacroDensTM footprint
47.8 x 28.1 x max height 8.0 mm (1.88 x 1.11 x max
height 0.32 in.)
High efficiency, typ. 85 % at 5.0 Vout full load
1500 Vdc input to output isolation
Meets isolation requirements equivalent to basic
insulation according to IEC/EN/UL 60950
More than 5.0 million hours predicted MTBF at 40oC
ambient temperature
General Characteristics
Input under voltage protection
Over temperature protection
Output short-circuit protection
Over current protection
Soft start
Remote control
Output voltage adjust function
Highly automated manufacturing to ensure highest
quality
ISO 9001/14001 certified supplier
Safety Approvals Design for Environment
Meets requirements in high-
temperature lead-free soldering
processes.
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
Ericsson Internal
PRODUCT SPECIFICATION 2 (3)
Prepared (also subject responsible if other) No.
SEC/S/ Stella TAO 1/1301-BMR6401211+ Uen
Approved Checked Date Rev Reference
SEC/S/ Stella TAO (MICJOHN) 2007-09-18 D
General Information
Ordering Information
See Contents for individual product ordering numbers.
Option Suffix Ordering No.
SMD, lead-free surface finish
SMD, leaded surface finish
Through hole pin
S
SPB
P
PKR 2610A SI
PKR 2610A SPBI
PKR 2610A PI
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 one method, Telcordia
SR332.
Predicted MTBF for the series is:
- 6.0 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)
The exemption for lead in solder for servers, storage and
storage array systems, network infrastructure equipment
for switching, signaling, transmission as well as network
management for telecommunication is only utilized in
surface mount products intended for end-users’ leaded
SnPb Eutectic soldering processes. (See ordering
information table).
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).
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
2
Ericsson Internal
PRODUCT SPECIFICATION 3 (3)
Prepared (also subject responsible if other) No.
SEC/S/ Stella TAO 1/1301-BMR6401211+ Uen
Approved Checked Date Rev Reference
SEC/S/ Stella TAO (MICJOHN) 2007-09-18 D
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 Equipment.
IEC/EN/UL60950 contains requirements to prevent injury
or damage due to the following hazards:
Electrical shock
Energy hazards
Fire
Mechanical and heat hazards
Radiation hazards
Chemical hazards
On-board DC-DC converters are defined as component
power supplies. As components they cannot fully comply
with the provisions of any Safety requirements without
“Conditions of Acceptability”. 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 Ericsson Power Modules 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
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
3
Ericsson Internal
PRODUCT SPECIFICATION 1 (14)
Prepared (also subject responsible if other) No.
ESKEVIN 2/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 D
Absolute Maximum Ratings
Characteristics min typ max Unit
Tref Operating Temperature (see Thermal Consideration section) -45 +110 °C
TS Storage temperature -55 +125 °C
VI Input voltage -0.5 +40 V
Viso Isolation voltage (input to output test voltage) 1500 Vdc
Vtr Input voltage transient (tp 100 ms) 60 V
Positive logic option -5 16 V
VRC Remote Control pin voltage
(see Operating Information section)
Vadj Adjust pin voltage (see Operating Information section) -5 +40 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.
Fundamental Circuit Diagram
Single output
1 2
4
3
1
2
M1
RC
V adj
NOR
+In
-In
Out1
TOA
Sync
1 2
Rtn
Double output (negative output 2)
Out2
Rtn
1 2
RC
Vadj
Out1
-In
+In
1 2
8
1 2 3 4
567
1 2
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
4
Ericsson Internal
PRODUCT SPECIFICATION 2 (14)
Prepared (also subject responsible if other) No.
ESKEVIN 2/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 D
3.3V, 2A / 6.6W Electrical Specification PKR 2610A SI
Tref = -30 to +95ºC, VI = 18 to 36 V, pin 8 connected to pin 9 unless otherwise specified under Conditions.
Typical values given at: Tref = +25°C, VI= 27 VI max IO, unless otherwise specified under Conditions.
Characteristics Conditions min typ max Unit
VI Input voltage range 18 36 V
VIoff Turn-off input voltage Decreasing input voltage 15 16 V
VIon Turn-on input voltage Increasing input voltage 17.1 17.9 V
CI Internal input capacitance 2 μF
PO Output power Output voltage initial setting 0 6.6 W
SVR Supply voltage rejection (ac) f = 100 Hz sinewave, 1 Vp-p 61 dB
50 % of max IO 81.0
max IO 82.0
50 % of max IO, VI = 24 V 82.0
η Efficiency
max IO, VI = 24 V 82.0
%
Pd Power Dissipation max IO 1.4 2 W
Pli Input idling power IO = 0 A, VI = 27 V 120 mW
PRC Input standby power VI = 27 V (turned off with RC) 25 mW
fs Switching frequency 0-100 % of max IO 477 510 533 kHz
VOi Output voltage initial setting and
accuracy Tref = +25°C, VI = 27 V, IO = 1 A 3.27 3.30 3.33 V
Output adjust range 10 —100% of max IO 1.8 3.8 V
Output voltage tolerance band 10-100 % of max IO 3.17 3.43 V
Idling voltage IO = 0 A 3.6 4.6 V
Line regulation max IO 6 mV
VO
Load regulation VI = 27 V, 0-100 % of max IO 70 mV
Vtr Load transient
voltage deviation ±180 mV
ttr Load transient recovery time
VI = 27 V, Load step 25-75-25 % of
max IO, di/dt = 1 A/μs 10 μs
tr Ramp-up time
(from 1090 % of VOi) 0.2 2.3 5 ms
ts Start-up time
(from VI connection to 90 % of VOi)
10-100 % of max IO
1 4.2 15 ms
IO Output current 0 2 A
Ilim Current limit threshold Tref < max Tref 2.2 2.7 3.5 A
Isc Short circuit current Tref = 25ºC, See Operating
Information section 3 A
VOac Output ripple & noise See ripple & noise section,
max IO, VOi 6 50 mVp-p
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
5
Ericsson Internal
PRODUCT SPECIFICATION 3 (14)
Prepared (also subject responsible if other) No.
ESKEVIN 2/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 D
3.3V, 2A / 6.6W Typical Characteristics PKR 2610A SI
Efficiency Power Dissipation
65
70
75
80
85
90
0,0 0,5 1,0 1,5 2,0 [A ]
[%]
18 V
24V
27V
36V
0.0
0.5
1.0
1.5
2.0
0.0 0.5 1.0 1.5 2.0 [A]
[W]
18V
24V
27V
36V
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 Thermal Resistance
0.0
0.6
1.2
1.8
2.4
20 30 40 50 60 70 80 90 100 [°C]
[A]
3.0 m/s
2.0 m/s
1.5 m/s
1.0 m/s
Nat. Conv.
0
5
10
15
20
0.00.51.01.52.02.53.0
[m/s]
C/W]
Available load current vs. ambient air temperature and airflow at
VI = 27 V. See Thermal Consideration section.
Thermal resistance vs. airspeed measured at the converter.
Tested in wind tunnel with airflow and test conditions as per
the Thermal consideration section.
Output Characteristics Current Limit Characteristics
2.80
3.00
3.20
3.40
3.60
3.80
0.0 0.5 1.0 1.5 2.0 [A]
[V]
18V
24V
27V
36V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
2.0 2.5 3.0 3.5 4.0 [A]
[V]
18V
24V
27V
36V
Output voltage vs. load current at Tref = +25°C
Output voltage vs. load current at IO > max IO , Tref = +25°C
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
6
Ericsson Internal
PRODUCT SPECIFICATION 4 (14)
Prepared (also subject responsible if other) No.
ESKEVIN 2/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 D
3.3V, 2A / 6.6W Typical Characteristics PKR 2610A SI
Start-up Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 27 V,
IO = 2 A resistive load.
Top trace: output voltage (1.0 V/div.).
Bottom trace: input voltage (10 V/div.).
Time scale: (2 ms/div.).
Shut-down enabled by disconnecting VI at:
Tref = +25°C, VI = 27 V,
IO = 2 A resistive load.
Top trace: output voltage (1.0 V/div.).
Bottom trace: input voltage (10 V/div.).
Time scale: (2 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
Tref = +25°C, VI = 27 V,
IO = 2 A resistive load.
Trace: output voltage (5 mV/div.).
Time scale: (2 μs/div.).
Output voltage response to load current step-
change (0.5-1.5-0.5 A) at:
Tref =+25°C, VI = 27 V.
Top trace: output voltage (200 mV/div.).
Bottom trace: load current (1 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:
Rou= 3.18 x (3.9 — Vo) / ( Vo - Voi) kΩ
E.g. Increase 4% =>Vout =3.43 Vdc
3.18 x (3.9 — 3.43) / (3.43- 3.3) = 11.5 k
Ω
Output Voltage Adjust Downwards, Decrease:
Rod= 17.2 x ( Voi — Vo) / (Vo —1.7) kΩ
E.g. Decrease 2% =>Vout = 3.23 Vdc
17.2 x ( 3.3 — 3.23) / (3.23 —1.7)= 0.79 kΩ
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
7
Ericsson Internal
PRODUCT SPECIFICATION 5 (14)
Prepared (also subject responsible if other) No.
ESKEVIN 2/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 D
5.0V, 2A / 10W Electrical Specification PKR 2111A SI
Tref = -30 to +95ºC, VI = 18 to 36 V, pin 8 connected to pin 9 unless otherwise specified under Conditions.
Typical values given at: Tref = +25°C, VI= 27 VI max IO, unless otherwise specified under Conditions.
Characteristics Conditions min typ max Unit
VI Input voltage range 18 36 V
VIoff Turn-off input voltage Decreasing input voltage 15 16 V
VIon Turn-on input voltage Increasing input voltage 17.3 17.9 V
CI Internal input capacitance 2 μF
PO Output power Output voltage initial setting 0 10 W
SVR Supply voltage rejection (ac) f = 100 Hz sinewave, 1 Vp-p 65 dB
50 % of max IO 85.0
max IO 85.0
50 % of max IO, VI = 24 V 85.0
η Efficiency
max IO, VI = 24 V 85.0
%
Pd Power Dissipation max IO 1.8 2.4 W
Pli Input idling power IO = 0 A, VI = 27 V 185 mW
PRC Input standby power VI = 27 V (turned off with RC) 25 mW
fs Switching frequency 0-100 % of max IO 477 510 533 kHz
VOi Output voltage initial setting and
accuracy Tref = +25°C, VI = 27 V, IO = 1.5 A 5.02 5.05 5.08 V
Output adjust range 10 —100% of max IO 4.3 5.8 V
Output voltage tolerance band 10-100 % of max IO 4.85 5.25 V
Idling voltage IO = 0 A 5.2 5.7 6.5 V
Line regulation max IO 10 mV
VO
Load regulation VI = 27 V, 0-100 % of max IO 100 mV
Vtr Load transient
voltage deviation ±200 mV
ttr Load transient recovery time
VI = 27 V, Load step 25-75-25 % of
max IO, di/dt = 1 A/μs 100 μs
tr Ramp-up time
(from 1090 % of VOi) 0.2 2.5 5 ms
ts Start-up time
(from VI connection to 90 % of VOi)
10-100 % of max IO
1 5.5 15 ms
IO Output current 0 2 A
Ilim Current limit threshold Tref < max Tref 2.2 2.5 3.0 A
Isc Short circuit current Tref = 25ºC, See Operating
Information section 3.3 A
VOac Output ripple & noise See ripple & noise section,
max IO, VOi 10 50 mVp-p
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
8
Ericsson Internal
PRODUCT SPECIFICATION 6 (14)
Prepared (also subject responsible if other) No.
ESKEVIN 2/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 D
5.0V, 2A / 10W Typical Characteristics PKR 2111A SI
Efficiency Power Dissipation
65
70
75
80
85
90
0.0 0.4 0.8 1.2 1.6 2.0 [A]
[%]
18V
24V
27V
36V
0.0
0.4
0.8
1.2
1.6
2.0
0.0 0.4 0.8 1.2 1.6 2.0 [A]
[W]
18V
24V
27V
36V
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 Thermal Resistance
0.0
0.6
1.2
1.8
2.4
20 30 40 50 60 70 80 90 100 [°C]
[A]
3.0 m/s
2.0 m/s
1.5 m/s
1.0 m/s
Nat. Conv.
0
5
10
15
20
0.0 0.5 1.0 1.5 2.0 2.5 3.0 [m/s]
[°C/W]
Available load current vs. ambient air temperature and airflow at
VI = 27 V. See Thermal Consideration section.
Thermal resistance vs. airspeed measured at the converter.
Tested in wind tunnel with airflow and test conditions as per
the Thermal consideration section.
Output Characteristics Current Limit Characteristics
4.80
5.00
5.20
5.40
5.60
5.80
0.0 0.4 0.8 1.2 1.6 2.0 [A]
[V]
18V
24V
27V
36V
0.0
1.0
2.0
3.0
4.0
5.0
2.0 2.4 2.8 3.2 3.6 4.0 [A]
[V]
18V
24V
27V
36V
Output voltage vs. load current at Tref = +25°C
Output voltage vs. load current at IO > max IO , Tref = +25°C
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
9
Ericsson Internal
PRODUCT SPECIFICATION 7 (14)
Prepared (also subject responsible if other) No.
ESKEVIN 2/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 D
5.0V, 2A / 10W Typical Characteristics PKR 2111A SI
Start-up Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 27 V,
IO = 2 A resistive load.
Top trace: output voltage (2.0 V/div.).
Bottom trace: input voltage (10 V/div.).
Time scale: (1 ms/div.).
Shut-down enabled by disconnecting VI at:
Tref = +25°C, VI = 27 V,
IO = 2 A resistive load.
Top trace: output voltage (2.0 V/div.).
Bottom trace: input voltage (10 V/div.).
Time scale: (1 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
Tref = +25°C, VI = 27 V,
IO = 2 A resistive load.
Trace: output voltage (5 mV/div.).
Time scale: (2 μs/div.).
Output voltage response to load current step-
change (0.5-1.5-0.5 A) at:
Tref =+25°C, VI = 27 V.
Top trace: output voltage (200 mV/div.).
Bottom trace: load current (1 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:
Rou= 4.20 x (6.27 — Vo) / ( Vo - Voi) kΩ
E.g. Increase 4% =>Vout =5.25 Vdc
4.20 x (6.27 — 5.25) / (5.25- 5.05) = 21.4 k
Ω
Output Voltage Adjust Downwards, Decrease:
Rod= 18 x ( Voi — Vo) / (Vo —2.76) kΩ
E.g. Decrease 2% =>Vout = 4.95 Vdc
18 x ( 5.05 — 4.95) / (4.95 —2.76)= 0.822 kΩ
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
10
Ericsson Internal
PRODUCT SPECIFICATION 8 (14)
Prepared (also subject responsible if other) No.
ESKEVIN 2/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 D
12V, 1A / 12W Electrical Specification PKR 2113A SI
Tref = -30 to +95ºC, VI = 18 to 36 V, pin 8 connected to pin 9 unless otherwise specified under Conditions.
Typical values given at: Tref = +25°C, VI= 27 VI max IO, unless otherwise specified under Conditions.
Characteristics Conditions min typ max Unit
VI Input voltage range 18 36 V
VIoff Turn-off input voltage Decreasing input voltage 15 16 V
VIon Turn-on input voltage Increasing input voltage 17.4 17.9 V
CI Internal input capacitance 2 μF
PO Output power Output voltage initial setting 0 12 W
SVR Supply voltage rejection (ac) f = 100 Hz sinewave, 1 Vp-p 62 dB
50 % of max IO 87.0
max IO 88.0
50 % of max IO, VI = 24 V 87.5
η Efficiency
max IO, VI = 24 V 88.0
%
Pd Power Dissipation max IO 1.6 2.7 W
Pli Input idling power IO = 0 A, VI = 27 V 185 mW
PRC Input standby power VI = 27 V (turned off with RC) 20 mW
fs Switching frequency 0-100 % of max IO 477 510 533 kHz
VOi Output voltage initial setting and
accuracy Tref = +25°C, VI = 27 V, IO = 0.8 A 11.94 12.00 12.06 V
Output adjust range 10 —100% of max IO 6.5 15.0 V
Output voltage tolerance band 10-100 % of max IO 11.6 12.6 V
Idling voltage IO = 0 A 12.5 13.0 14.5 V
Line regulation max IO 10 mV
VO
Load regulation VI = 27 V, 0-100 % of max IO 240 mV
Vtr Load transient
voltage deviation ±330 mV
ttr Load transient recovery time
VI = 27 V, Load step 25-75-25 % of
max IO, di/dt = 1 A/μs 150 μs
tr Ramp-up time
(from 1090 % of VOi) 0.2 2.3 5 ms
ts Start-up time
(from VI connection to 90 % of VOi)
10-100 % of max IO
1 5 15 ms
IO Output current 0 1 A
Ilim Current limit threshold Tref < max Tref 1.2 1.4 2.0 A
Isc Short circuit current Tref = 25ºC, See Operating
Information section 2.3 A
VOac Output ripple & noise See ripple & noise section,
max IO, VOi 8 50 mVp-p
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
11
Ericsson Internal
PRODUCT SPECIFICATION 9 (14)
Prepared (also subject responsible if other) No.
ESKEVIN 2/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 D
12V, 1A / 12W Typical Characteristics PKR 2113A SI
Efficiency Power Dissipation
65
70
75
80
85
90
0.0 0.2 0.4 0.6 0.8 1.0 [A]
[%]
18V
24V
27V
36V
0.0
0.4
0.8
1.2
1.6
2.0
0.0 0.2 0.4 0.6 0.8 1.0 [A]
[W]
18V
24V
27V
36V
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 Thermal Resistance
0.0
0.3
0.6
0.9
1.2
20 30 40 50 60 70 80 90 100 C]
[A]
3.0 m/s
2.0 m/s
1.5 m/s
1.0 m/s
Nat. Conv.
0
5
10
15
20
0.0 0.5 1.0 1.5 2.0 2.5 3.0 [m/s]
[°C/W]
Available load current vs. ambient air temperature and airflow at
VI = 27 V. See Thermal Consideration section.
Thermal resistance vs. airspeed measured at the converter.
Tested in wind tunnel with airflow and test conditions as per
the Thermal consideration section.
Output Characteristics Current Limit Characteristics
11.80
12.00
12.20
12.40
12.60
0.0 0.2 0.4 0.6 0.8 1.0 [A]
[V]
18V
24V
27V
36V
0.0
2.0
4.0
6.0
8.0
10.0
12.0
1.0 1.4 1.8 2.2 2.6 3.0 [A]
[V]
18V
24V
27V
36V
Output voltage vs. load current at Tref = +25°C
Output voltage vs. load current at IO > max IO , Tref = +25°C
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
12
Ericsson Internal
PRODUCT SPECIFICATION 10 (14)
Prepared (also subject responsible if other) No.
ESKEVIN 2/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 D
12V, 1A / 12W Typical Characteristics PKR 2113A SI
Start-up Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 27 V,
IO = 1 A resistive load.
Top trace: output voltage (5.0 V/div.).
Bottom trace: input voltage (10 V/div.).
Time scale: (5 ms/div.).
Shut-down enabled by disconnecting VI at:
Tref = +25°C, VI = 27 V,
IO = 1 A resistive load.
Top trace: output voltage (5.0 V/div.).
Bottom trace: input voltage (10 V/div.).
Time scale: (0.5 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
Tref = +25°C, VI = 27 V,
IO = 1 A resistive load.
Trace: output voltage (5 mV/div.).
Time scale: (0.5 μs/div.).
Output voltage response to load current step-
change (0.25-0.75-0.25 A) at:
Tref =+25°C, VI = 27 V.
Top trace: output voltage (200 mV/div.).
Bottom trace: load current (0.5 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:
Rou= 4.20 x (15 — Vo) / ( Vo - Voi) kΩ
E.g. Increase 4% =>Vout =12.48 Vdc
4.20 x (15 — 12.48) / (12.48- 12.00) = 22.1 k
Ω
Output Voltage Adjust Downwards, Decrease:
Rod= 18.6 x ( Voi — Vo) / (Vo —6.5) kΩ
E.g. Decrease 2% =>Vout = 11.76 Vdc
18.6 x ( 12.00 — 11.76) / (11.76 —6.5)= 0.849 kΩ
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
13
Ericsson Internal
PRODUCT SPECIFICATION 11 (14)
Prepared (also subject responsible if other) No.
ESKEVIN 2/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 D
+12V, 0.62A / -12V, 0.62A / 14.9W Dual, Electrical
Specification PKR 2221A SI
Tref = -30 to +95ºC, VI = 18 to 36 V, pin 8 connected to pin 9 unless otherwise specified under Conditions.
Typical values given at: Tref = +25°C, VI= 27 V, max IO unless otherwise specified under Conditions.
Characteristics Conditions min typ max Unit
VI Input voltage range 18 36 V
VIoff Turn-off input voltage Decreasing input voltage 15 16.1 V
VIon Turn-on input voltage Increasing input voltage 17.4 18 V
CI Internal input capacitance 2 μF
PO Output power Output voltage initial setting 0 14.9 W
SVR Supply voltage rejection (ac) f = 100 Hz sinewave, 1 Vp-p 65 dB
Efficiency at 50 % of max power IO1 = 0.31 A, IO2 = 0.62 A 86.2
Efficiency at max power IO1 = 0.62 A, IO2 = 0.62 A 86.9
Efficiency at 50 % of max power IO1 = 0.31 A, IO2 = 0.62 A, VI =
24 V 86.6
η
Efficiency at max power IO1 = 0.62 A, IO2 = 0.62 A, VI =
24 V 87.1
%
Pd Power Dissipation at max power IO1 = 0.62 A, IO2 = 0.62 A 2.2 2.5 W
Pli Input idling power IO = 0 A, VI = 27 V 220 mW
PRC Input standby power VI = 27 V (turned off with RC) 20 mW
fs Switching frequency IO1 = IO2 = 50-100 % of max IO 477 510 533 kHz
Output 1 Output 2
min typ max min typ max
VOi Output voltage initial setting and
accuracy
Tref =+25°C, VI = 27 V,
IO1 = 0.62 A, IO2 = 0.62 A 12.00 12.00 V
Output adjust range 10 —100% of max IO 9.00 15.00 9.00 15.00 V
Output voltage tolerance band 10-100 % of max IO 11.94 12.21 11.93 12.27 V
Idling voltage IO = 0 A 12.8 12.8 V
Line regulation IO1 = 0.62 A, IO2 = 0.62 A 6 15 8 20 mV
Load regulation output 1 VI = 27 V, IO1 = 10-100 % of
max, IO2 = 0.62 A 250 350
VO
Load regulation output 2 VI = 27 V, IO1 = 0.62 A,
IO2 = 10-100 % of max 300 400
mV
Vtr Load transient
voltage deviation ±140 ±140 mV
ttr Load transient recovery time
VI = 27 V, Load step IO1
257525 % of max, IO2 = 0.62
A.
di/dt = 1 A/μs 120 120 μs
tr Ramp-up time (from 10-90 % of
VOi) 1.2 3.0 1.3 3.0 ms
ts Start-up time
(from VI connection to 90 % of VOi)
IO1 = 0.62 A, IO2 = 0.62 A
4.6 9.0 4.7 9.0 ms
IO Output current 0 0.62 0 0.62 A
Ilim Current limit threshold Tref < max Tref 0.8 1.0 1.2 0.8 1.0 1.2 A
Isc Short circuit current
T
ref = 25ºC, See Operating
Information section 1.8 2.0 1.8 2.0 A
VOac Output ripple & noise See ripple & noise section,
max IO, VOi 10 30 5 20 mVp-p
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
14
Ericsson Internal
PRODUCT SPECIFICATION 12 (14)
Prepared (also subject responsible if other) No.
ESKEVIN 2/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 D
+12V, 0.62A / -12V, 0.62A / 14.9W Dual, Typical
Characteristics
PKR 2221A SI
Efficiency Power Dissipation
70
75
80
85
90
95
0.0 0.2 0.4 0.6 0.8 [A]
[%]
18 V
24 V
27 V
36 V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0.0 0.2 0.4 0.6 0.8 [A]
[W]
18 V
24 V
27 V
36 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 Power Derating Thermal Resistance
0
3
6
9
12
15
18
0 20406080100[°C]
[W]
3.0 m/s
2.5 m/s
2.0 m/s
1.5 m/s
1.0 m/s
Nat. Conv.
6
8
10
12
14
16
18
0.0 0.5 1.0 1.5 2.0 2.5 3.0 [m/s]
[°C/W]
Available load current vs. ambient air temperature and airflow at
VI = 27 V. See Thermal Consideration section.
Thermal resistance vs. airspeed measured at the converter.
Tested in wind tunnel with airflow and test conditions as per
the Thermal consideration section.
Output 1 Characteristics Output 1 Cross Regulation Output 2 Cross Regulation Output 2 Characteristics
VI = 27 V
11.7
11.8
11.9
12.0
12.1
0.0 0.2 0.4 0.6 0.8 [A] IO2
[V] VO 1
VI = 27 V
11.7
11.8
11.9
12.0
12.1
0.0 0.2 0.4 0.6 0.8 [A] IO1
[V] VO2
Output voltage vs. load current at Tref = +25°C
Output voltage vs. load current at Tref = +25°C
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
15
Ericsson Internal
PRODUCT SPECIFICATION 13 (14)
Prepared (also subject responsible if other) No.
ESKEVIN 2/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 D
+12V, 0.62A / -12V, 0.62A / 14.9W Dual, Typical
Characteristics
PKR 2221A SI
Start-up Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 27 V,
IO1 = 0.62 A, IO2 = 0.62 A resistive load.
Top trace: output voltage 1 (5.0 V/div.).
Mid trace: output voltage 2 (5.0 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: (2 ms/div.).
Shut-down enabled by disconnecting VI at:
Tref = +25°C, VI = 27 V,
IO1 = 0.62 A, IO2 = 0.62 A resistive load.
Top trace: output voltage 1 (5.0 V/div.).
Mid trace: output voltage 2 (5.0 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: (0.5 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
Tref = +25°C, VI = 27 V,
IO1 = 0.62 A, IO2 = 0.62 A resistive load.
Top trace: output voltage 1 (5 mV/div.).
Bottom trace: output voltage 2 (5 mV/div.).
Time scale: (2 μs/div.).
Output voltage response to load current
step-change, output 1 (0.16-0.47-0.16 A) at:
Tref =+25°C, VI = 27 V IO2 = 0.62 A.
Top trace: output voltage 2 (100 mV/div.).
Mid trace: output voltage 1 (100 mV/div.).
Bottom trace: load current (0.5 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:
Rou= 4.31 x (15.30 — Vo) / ( Vo - Voi) kΩ
Output Voltage Adjust Downwards, Decrease:
Rod= 13.78 x ( Voi — Vo) / (Vo —5.51) kΩ
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
16
Ericsson Internal
PRODUCT SPECIFICATION 1 (5)
Prepared (also subject responsible if other) No.
ESKEVIN 3/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 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
510 kHz for PKR 2610A SI @ VI = 27 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= 1μF 100V
C2= 10μF 100V
C3,C4= 2.2nF
1500Vdc
L1= Pulse PO354
1.17mH
EMI with filter
Test set-up
Layout recommendation
The radiated EMI performance of the DC/DC converter will
depend on the PCB layout and ground layer design.
It is also important to consider the stand-off of the DC/DC
converter.
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.
Output ripple and noise test setup
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
17
Ericsson Internal
PRODUCT SPECIFICATION 2 (5)
Prepared (also subject responsible if other) No.
ESKEVIN 3/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 B
Operating information
Input Voltage
The input voltage range 18… 36 Vdc.
At input voltages exceeding 36 V, the power loss will be
higher than at normal input voltage and Tref must be limited to
absolute max +95°C. The absolute maximum continuous
input voltage is 36 Vdc.
Turn-off Input Voltage
The converters 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 0.6V.
To increase VIon a resistor should be connected between pin
11 and 18. The resistance is given by the following equation:
Rset(up) = (X - Von)/(Von - VIon) kΩ
To decrease VIon a resistor should be connected between pin
10 and 11. The resistance is given by the following equation:
Rset(down) = 22(Von - Y)/(VIon - Von) kΩ
Variants/Parameters Vion X Y
PKR2610A 17.1 857 15.2
PKR2111A 17.3 857 15.2
PKR2113A
PKR2221A 17.4 857 15.2
Voff is the adjusted turn-off input volta
g
e and is determined b
y
Von - Voff = 0.8V (Typical value).
Remote Control (RC)
The products are fitted with a
remote control function referenced
to the primary negative input
connection (- In), and have positive
logic. The RC function allows the
converter to be turned on/off by an
external device like a
semiconductor or mechanical
switch.
The maximum required sink current is 1 mA. When the RC pin
is left open, the voltage generated on the RC pin is
<16 V. To ensure that the converter sta
y
s off the volta
g
e must
be below 1.0 V.
Input and Output Impedance
The impedance of both the input source and the load will
interact with the impedance of the DC/DC converter. It is
important that the input source has low characteristic
impedance. The converters 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 10 μF capacitor
across the input of the converter will ensure stable operation.
The capacitor is not required when powering the DC/DC
converter from an input source with an inductance below 10
μH.
External Decoupling Capacitors
When powering loads with significant dynamic current
requirements, the voltage regulation at the point of load can
be improved b
y
addition of decouplin
g
capacitors at the load.
The most effective technique is to locate low ESR ceramic
and electrol
y
tic capacitors as close to the load as possible b
y
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 at the
load.
It is equally important to use low resistance and low
inductance PCB layouts and cabling.
External decoupling capacitors will become part of the
control loop of the DC/DC converter and may affect the
stability margins. As a “rule of thumb”, 100 μF/A of output
current can be added without any additional analysis.
The recommended absolute maximum value of output
capacitance is 10 000 μF. For further information please
contact your local Ericsson Power Modules representative.
Output Voltage Adjust (Vadj)
All converters have an Output Voltage Adjust pin (Vadj). This
pin can be used to adjust the output voltage above or below
Output voltage initial setting.
At increased output voltages the maximum power rating of
the converter 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 -IN. 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 NOR pin.
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
18
Ericsson Internal
PRODUCT SPECIFICATION 3 (5)
Prepared (also subject responsible if other) No.
ESKEVIN 3/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 B
Operating information continued
Parallel Operation
Paralleling of several converters is easily accomplished by
direct connection of the output voltage terminal pins. The
load regulation characteristic is specifically designed for
optimal paralleling performance. Load sharing between
converters will be within ±10%. It is recommended not to
exceed
PO = n x 0.9 x POmax, where POmax is the maximum
converter output power and n is the number of paralleled
converters, to prevent overloading any of the converters and
thereby decreasing the reliability performance.
Over Temperature Protection (OTP)
The PKR 2000A Series DC/DC converters include an internal
over temperature shutdown circuit.
When the temperature exceeds 130°C - 150°C on the control
circuit the converter will shut down. The DC/DC converter 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 Current Protection (OCP)
The converters 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
converter will resume normal operation after removal of the
overload. The load distribution should be designed for the
maximum output short circuit current specified.
Synchronization
It is possible to synchronize the switching frequency to an
external symmetrical clock signal. The input can be driven by
a TTL-compatible output and reference to the -input pin 18.
Characteristic Min Typ Max Unit
High level 2.2 6.5 V
Threshold level*) 1.2 1.7 2.2 V
Low level 0 0.4 V
Sink current 1.5 mA
Sync. Frequency 520 668 kHz
*) Rise time < 10ns
Thermal Consideration
General
The converters 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 PCB board, and convection, which is dependant on the
airflow across the converter. Increased airflow enhances the
cooling of the converter.
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 Vin = 27 V.
The converter 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 305 x 305 mm.
Proper cooling of the converter can be verified by measuring
the temperature at position P1. The temperature at these
positions should not exceed the max values provided in the
table below.
Note that the max value is the absolute maximum rating
(non destruction) and that the electrical Output data is
guaranteed up to Tref +95°C.
See Design Note 019 for further information.
Position Device Designation max value
P1 Transformer
Tref 110º C
P2 Mosfet
P3 PCB
P1
ir Flow
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
19
Ericsson Internal
PRODUCT SPECIFICATION 4 (5)
Prepared (also subject responsible if other) No.
ESKEVIN 3/1301-BMR 640 1211+ Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-8-20 B
Thermal Consideration continued
Definition of reference temperature (Tref)
The reference temperature is used to monitor the temperature
limits of the product. Temperatures above maximum Tref are
not allowed and may cause degradation or permanent
damage to the product. Tref is also used to define the
temperature range for normal operating conditions.
Tref is defined by the design and used to guarantee safety
margins, proper operation and high reliability of the module.
Ambient Temperature Calculation
By using the thermal resistance the maximum allowed
ambient temperature can be calculated.
1. The power loss is calculated by using the formula
((1/η) - 1) × output power = power losses (Pd).
η = efficiency of converter. E.g. 82 % = 0.82
2. Find the thermal resistance (Rth) in the Thermal Resistance
graph found in the Output section for each model.
Calculate the temperature increase (ΔT).
ΔT = Rth x Pd
3. Max allowed ambient temperature is:
Max Tref - ΔT.
E.g. PKR 2610A SI at 1m/s:
1. (( ) - 1) × 6.6 W = 1.45 W
2. 1.45 W × 10°C/W =14.5°C
3. 110 °C — 14.5°C = max ambient temperature is 95.5°C
The actual temperature will be dependent on several factors
such as the PCB size, number of layers and direction of
airflow.
Connections
1 9
2 3 4 5 6 7 8
18 17 16 15 14 13 12 11 10
Pin Designation Function
1 Out 1 Output 1
2 Rtn Output return
3 Out 22) Output 2
4 NC Not connected
5 NC Not connected
6 NC Not connected
7 Sync Synchronization input
8 Vadj Output voltage adjust
9 NOR Connection of Nominal Output
volta
g
e Resisto
r
1)
10 TOA Turn-on/off input voltage adjust
11 RC Remote control. Used to turn-
on/off output
12 NC Not connected
13 NC Not connected
14 NC Not connected
15 NC Not connected
16 NC Not connected
17 + In Positive Input
18 -In Negative input
1) Nominal voltage when pin 8 & 9 are connected together.
2) Only for duals.
1
0.82
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
20
Ericsson Internal
PRODUCT SPEC. MECHANICAL 1 (4)
Prepared (also subject responsible if other) No.
MICKAOV 4/1301-BMR 6401 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) See §1 2007-10-08 E
Mechanical Information — Surface Mount Version
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
21
Ericsson Internal
PRODUCT SPEC. MECHANICAL 2 (4)
Prepared (also subject responsible if other) No.
MICKAOV 4/1301-BMR 6401 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) See §1 2007-10-08 E
Assembly Information — Surface Mount Version
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
22
Ericsson Internal
PRODUCT SPEC. MECHANICAL 3 (4)
Prepared (also subject responsible if other) No.
MICKAOV 4/1301-BMR 6401 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) See §1 2007-10-08 E
Mechanical Information — Hole Mount Version
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
23
Ericsson Internal
PROD. SPECIFICATION MECHANICAL 1 (5)
Prepared (also subject responsible if other) No.
MICKAOV 5/1301-BMR 6401 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) See §1 2007-10-08 D
Soldering Information - Surface Mounting
The surface mount version of the product is intended for
convection reflow or vapor phase reflow in SnPb or Pb-free
reflow processes.
Mounting Options
The surface mount version is available in two options, SnPb
based or SnAgCu based (Pb-free) solder bumps.
The SnPb solder bumps are intended for SnPb solder paste
on the host board and to be reflowed in SnPb reflow process
temperatures, typically +210 to +220°C.
The Pb-free solder bumps are intended for Pb-free solder
paste on the host board and to be reflowed in Pb-free reflow
process temperatures, typically +235 to +250°C.
Note that recommendations for minimum and maximum pin
temperature — and maximum peak product temperature — are
different depending on mounting option, reflow process type
and if the dry packing of the products has been kept intact.
General Reflow Profile Recommendations
The reflow profile should be optimised to avoid excessive
heating of the product. It is recommended to have a
sufficiently extended preheat time to ensure an even
temperature across the host PCB and 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.
Reflow process specifications
1
SnPb eutectic Pb-free
Average ramp-up rate 3°C/s max 3°C/s max
Typical solder melting (liquidus)
temperature
T
L
+183°C +221°C
Minimum reflow time above T
L
30 s 30 s
Minimum pin temperature T
PIN
+210°C +235°C
Peak product temperature T
PRODUCT
+225°C +260°C
Average ramp-down rate 6°C/s max 6°C/s max
Maximum time 25°C to peak 6 minutes 8 minutes
1
Note: for mixed SnPb / Pb-free soldering, special recommendations apply
T
PRODUCT
maximum
T
PIN
minimum
Time
Pin
profile
Product
profile
T
L
Time in
reflow
Time in preheat
/ soak zone
Time 25°C to peak
Temperature
Mixed Solder Process Recommendations
When using products with Pb-free solder bumps and thereby
mixing Pb-free solder with SnPb paste on the host board and
reflowing at SnPb process temperatures (backwards
compatibility), special recommendations apply.
An extended preheat time between +170°C and +180°C for
60 to 90s and a pin reflow temperature (T
PIN
) between +220°C
and +225°C for 30 to 60 s is recommended.
The extended preheat and soak at reflow temperature will
minimize temperature gradients and maximize the wetting
and solder mixin
g
in the final solder joints. The use of nitro
g
en
reflow atmosphere will further improve the solder joint quality.
30-60 s
221°C to 225°C
60-90 s
170°C to 180°C
Solder bump
Profile
Temperature
Time
Dry Pack Information
Products intended for Pb-free reflow 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). The SnPb
option of this product is also delivered in dry packing.
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 PCB near pin
9 or pin 10 for
measurement of
maximum product
temperature, T
PRODUCT
Pin 5 of pin 14 for measurement of minimum
pin (solder joint) temperature, T
PIN
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
24
Ericsson Internal
PROD. SPECIFICATION MECHANICAL 2 (5)
Prepared (also subject responsible if other) No.
MICKAOV 5/1301-BMR 6401 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) See §1 2007-10-08 D
Pin Temperature Recommendations
Pin number 5 and 14 are chosen as reference locations for
the minimum pin (solder joint) temperature recommendations
since these will likely be the coolest solder joints during
reflow
SnPb Solder Processes
Minimum pin temperature: for SnPb solder processes, a pin
temperature (T
PIN
)
in excess of the solder meltin
g
temperature,
(T
L
, +183°C for Sn63Pb37) for more than 30 seconds, and a
peak temperature of +210°C is recommended to ensure a
reliable solder joint.
A maximum pin temperature of +225°C should be sufficient
for most applications but depending on type of solder paste
and flux system used on the host board, up to a
recommended maximum temperature of +245°C could be
used, provided that the products are kept in a controlled
environment (dry pack handling and storage) prior to
assembly.
Pb-free Solder Processes
For Pb-free solder processes, a pin temperature (T
PIN
) in
excess of the solder melting temperature (T
L
, +217 to +221 °C
for SnAgCu solder alloys) for more than 30 seconds, and a
peak temperature of +235°C on all solder joints is
recommended to ensure a reliable solder joint.
Maximum Product Temperature Requirements
Top of the product PCB near pin 9 or 10 are chosen as
reference locations for the maximum (peak) allowed product
temperature (T
PRODUCT
), since these will likely be the warmest
parts of the product during the reflow process.
SnPb Solder Processes
For conventional SnPb solder processes, the product is
qualified for MSL 1 according to IPC/JEDEC standard
J-STD-020C (no dry pack handling or controlled environment
required)
During reflow, T
PRODUCT
must not exceed +225 °C at any time.
If the products are handled as MSL 3 products, they can
withstand up to +260°C as in Pb-free solder processes.
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, T
PRODUCT
must not exceed +260 °C at any time.
Surface Mount Assembly and Repair
The solder bumps of the product require particular care
during assembly since the solder bumps are hidden between
the host board and the product’s PCB. Special procedures
are required for successful rework of these products.
Assembly
Automatic pick and place equipment should be used to
mount the product on the host board. The use of a vision
system, utilizing the fiducials on the bottom side of the
product, will ensure adequate accuracy. Manual mounting of
solder bump products is not recommended.
Note that the actual position of the pick up surface may vary
between variants within the product program and is not
necessarily in the center of the product outline.
If necessary, it is recommended to fine tune the solder print
aperture size to optimize the amount of deposited solder with
consideration to screen thickness and solder print capability.
Repair
For a successful repair (removal and replacement) of a solder
bump product, a dedicated rework system should be used.
The rework system should preferably utilize a bottom side
heater and a dedicated hot air nozzle to heat the solder
bumps to reflow temperature.
The product is an open frame design with a pick up surface
on a lar
g
e central component. This pick up surface can not be
used for removal with a vacuum nozzle since the component
solder joints may have melted during the removal reflow.
In order not to damage the product and nearby components
during removal and replacement with a new product, it is
recommended to use a double wall design of the hot air
nozzle to direct the air flow only to the edges of the product,
see ‘Assembly Information’ in the mechanical drawing.
Soldering Information — Hole Mounting
The hole mount version of the product is intended for manual
or wave soldering in plated through holes on the host board.
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 preheat temperature
of max of +150°C is suggested.
When solderin
g
b
y
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.
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
25
Ericsson Internal
PROD. SPECIFICATION MECHANICAL 3 (5)
Prepared (also subject responsible if other) No.
MICKAOV 5/1301-BMR 6401 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) See §1 2007-10-08 D
Delivery Package Information
The surface mount version of the product is delivered in
antistatic injection molded trays (Jedec design guide 4.10D
standard) or in antistatic carrier tape (EIA 481 standard)
The hole mount version is delivered in antistatic tubes.
Carrier Tape Specifications
Material Polystyrene (PS), antistatic
Surface resistivity < 10
7
Ohm/square
Bakability The tape is not bakable
Tape width 72 mm [2.835 inch]
Pocket pitch 36 mm [1.417 inch]
Pocket depth 9.2 mm [0.362 inch]
Reel diameter 330 mm [13 inch]
Reel capacity 150 products / reel
Reel weight Approximately 2.5 kg / full reel
Tape feed direction Round holes
Elongated holes
Pin 1
Tube Specifications
Material PVC, transparent with antistatic coating
Surface resistance < 10
11
Ohm/square
Bakability The tubes are not bakable
Tube capacity 10 products / tube
Box capacity 100 products (10 full tubes / box)
Tube weight Typical 160 g full tube
Tray Specifications
Material PPE, antistatic
Surface resistance 10
5
< Ohm/square < 10
12
Bakability The trays can be baked at maximum
125 °C for maximum 48 hours
Tray capacity 15 products / tray
Box capacity 150 products (10 full trays / box)
Tray weight 140 g empty, 320 g full tray maximum
JEDEC standard tray
Note: all tray dimensions refer to pocket center. Exact position
of pickup point depends on the position of the pickup surface
(top of main transformer) of the individual product variant
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
26
Ericsson Internal
PROD. SPECIFICATION MECHANICAL 4 (5)
Prepared (also subject responsible if other) No.
MICKAOV 5/1301-BMR 6401 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) See §1 2007-10-08 D
Product Qualification Specification
Characteristics
External visual inspection IPC-A-610
Operational life test MIL-STD-202G method 108A
With power cycling
T
ref
Load
Duration
According to Absolute
maximum ratings
Maximum output power
500 h
Vibration, broad band random IEC 60068-2-64 Fh Frequency
Acceleration spectral density
Duration and directions
10 to 500 Hz
0.5 g
2
/Hz
10 min in each 3 perpendicular
directions
Vibration, sinusoidal IEC 68-2-64 F
c
Frequency
Amplitude
Acceleration
Sweep rate
Duration
10 to 500 Hz
0.75 mm
10 g
1 octave/min
2 h in each 3 perpendicular
directions
Mechanical shock IEC 68-2-27 E
a
Peak acceleration
Duration
Pulse shape
Directions
Number of pulses
100 g
6 ms
Half sine
6
18 (3 + 3 in each perpendicular
direction)
Change of temperature
(Temperature cycling)
IEC 60068-2-14 Na Temperature range
Number of cycles
Dwell time
-40 to +100°C
300
30 min
Robustness of terminations IEC 68-2-21 U
e1
IEC 68-2-21 U
a1
IEC 68-2-21 U
b
(5.2b)
Surface mount products
Through hole mount products
All leads
All leads
Solderability
Surface mount version
IEC 68-2-58 T
d
Temperature, SnPb Eutectic
Temperature, Pb free
Preconditioning
215 ±5°C
245 ±5°C
240 h in 85°C/85%RH
Solderability
Hole mount version
IEC 68-2-58 T
a
Temperature, Pb free
Solder immersion time
Preconditioning
260 ±5°C
5 ±0.5 s
Steam ageing 8 h±15 minutes
Damp heat IEC 60068-2-67 Cy
with bias
Temperature
Humidity
Duration
Preconditioning
+85 °C
85 % RH
500 hours
Reflowed 3X according to
IPC/JEDEC J-STD-020C MSL3
at 260°C
Moisture reflow sensitivity
classification
J-STD-020C SnPb Eutectic
Pb free
MSL 1, peak reflow at 225°C
MSL 3, peak reflow at 260°C
Immersion in cleaning solvents IEC 68-2-45 XA
Method 2
Water
Isopropyl alcohol
Glycol ether
+55 ±5°C
+35 ±5°C
+35 ±5°C
Cold (in operation) IEC 68-2-1 A
d
Temperature T
A
Duration
-40°C
72 h
E
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Technical Specifi cation
27