Ericsson Internal
PRODUCT SPECIFICATION 1 (3)
Prepared (also subject responsible if other) No.
EZHIXZH 1/1301- BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) 2008-10-7 C
Key Features
• Full-brick Industry Standard
116.8 x 61.0 x 12.7 mm (4.6 x 2.4 x 0.50 in.)
• High efficiency, typ. 95 % at 28 Vout within 30%-100%
load range.
• 1500 Vdc input to output isolation
• Meets isolation requirements equivalent to basic
insulation according to IEC/EN/UL 60950
• 1 million hours MTBF
General Characteristics
• Excellent thermal performance
• Output over voltage protection
• Input over voltage protection
• Input under voltage shutdown
• Over temperature protection
• Monotonic startup
• Remote sense
• Remote control
• Over current protection
• Output voltage adjust function
• Power Good Function.
• AUX voltage 10V, 50mA
• Highly automated manufacturing ensures quality
• ISO 9001/14001 certified supplier
Safety Approvals Design for Environment
Meets requirements in high-
temperature lead-free soldering
processes.
Public
TABLE OF CONTENTS 1 (1)
Prepared (also subject responsible if other) No.
SEC/S Kevin Zhou 00152-EN/LZT146380 Uen
Approved Checked Date Rev Reference
2008-10-10 C
Contents
General Information ............................................................. 2
Safety Specification ............................................................. 3
Absolute Maximum Ratings ............................................................. 4
Product Program Ordering No.
28 V, 21.5A / 600W Electrical Specification PKY 4616 PI ......................................... 5
28 V, 25A / 700W Electrical Specification PKY 4716 PI ......................................... 9
EMC Specification ........................................................... 13
Operating Information ........................................................... 14
Thermal Consideration ........................................................... 16
Connections ........................................................... 17
Mechanical Information ........................................................... 18
Soldering Information ........................................................... 19
Delivery Information ........................................................... 19
Product Qualification Specification ........................................................... 20
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
Ericsson Internal
PRODUCT SPECIFICATION 2 (3)
Prepared (also subject responsible if other) No.
EZHIXZH 1/1301- BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) 2008-10-7 C
General Information
Ordering Information
See Contents for individual product ordering numbers.
Option Suffix Ordering No.
Standard
Non-threaded stand off
Negative Remote Control logic
M
N
PKY 4716 PI
PKY 4716 PIM
PKY 4716 PIN
Note: As an example a negative logic with non-threaded stand off product
would be PKY 4716 PINM.
Reliability
The Mean Time Between Failure (MTBF) is calculated at full
output power and an operating ambient temperature (T
A
) 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 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).
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
2
Ericsson Internal
PRODUCT SPECIFICATION 3 (3)
Prepared (also subject responsible if other) No.
EZHIXZH 1/1301- BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) 2008-10-7 C
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 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 (V
iso
) 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
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
3
Ericsson Internal
PRODUCT SPECIFICATION 1 (10)
Prepared (also subject responsible if other) No.
ESECZHW 2/1301-BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) ECHWANG 2008-10-9 C
Absolute Maximum Ratings
Characteristics min typ max Unit
TP1 Operating Temperature (see Thermal Consideration section) -40 +100 °C
TS Storage temperature -55 +125 °C
VI Input voltage -0.5 +100 V
Viso Isolation voltage (input to output test voltage) 1500 Vdc
Vtr Input voltage transient (tp 100 ms) 100 V
Positive logic option -100 +12 V
VRC Remote Control pin voltage
(see Operating Information section) Negative logic option -100 +12 V
Vadj Adjust pin voltage (see Operating Information section) -0.5 +10 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
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
4
Ericsson Internal
PRODUCT SPECIFICATION 2 (10)
Prepared (also subject responsible if other) No.
ESECZHW 2/1301-BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) ECHWANG 2008-10-9 C
28V, 21.5A/600W Electrical Specification PKY 4616 PI
TP1 = -40 to +100ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.
Typical values given at: TP1 = +25°C, VI= 53 VI max IO, unless otherwise specified under Conditions.
Additional Cin = 220 µF.See Operating Information section for selection of capacitor types.
Characteristics Conditions min typ max Unit
VI Input voltage range 36 75 V
VIoff Turn-off input voltage Decreasing input voltage 32.1 33 34.5 V
VIon Turn-on input voltage Increasing input voltage 33.3 35 35.5 V
CI Internal input capacitance 35.2 μF
PO Output power 0 600 W
50 % of max IO 95
max IO 93.5 94.5
50 % of max IO, VI = 48 V 95
η Efficiency
max IO, VI = 48 V 93.5 94,5
%
Pd Power Dissipation max IO 34.9 41.7 W
Pli Input idling power IO = 0 A, VI = 53 V 5.7 17 W
PRC Input standby power VI = 53 V (turned off with RC) 0.2 0.3 W
fs Switching frequency 0-100 % of max IO 145 150 155 kHz
VIOVP Input over voltage protection 0-100 % of max IO 80 83 86 V
VOi Output voltage initial setting and
accuracy TP1 = +25°C, VI = 53 V, IO = 21.5 A 27.72 28.0 28.28 V
Output adjust range See operating information 15.0 32.0 V
Output voltage tolerance band 10-100 % of max IO 27.58 28.42 V
Idling voltage IO = 0 A 27.44 28.56 V
Line regulation max IO 20 80 mV
VO
Load regulation VI = 53 V, 1-100 % of max IO 20 80 mV
Vtr Load transient
voltage deviation ±800 mV
ttr Load transient recovery time
VI = 53 V, Load step 25-75-25 % of
max IO, di/dt = 1 A/μs
40 µs
tr Ramp-up time
(from 10−90 % of VOi) 10 20 ms
ts Start-up time
(from VI connection to 90 % of VOi)
10-100 % of max IO
17 20 ms
max IO 0.06 ms
tf VI shut-down fall time
(from VI off to 10 % of VO) IO = 0 A 2.7 s
RC start-up time max IO 15 ms
max IO 0.06 ms
tRC RC shut-down fall time
(from RC off to 10 % of VO) IO = 0 A 2.7 s
IO Output current 0 21.5 A
Ilim Current limit threshold TP1 < max TP1 22 27 33.5 A
Isc Short circuit current TP1 = 25ºC, see Note 1 27.5 34 A
Cout Recommended Capacitive Load TP1 = 25ºC 0 TBD µF
VOac Output ripple & noise See ripple & noise section,
max IO, VOi 180 250 mVp-p
OVP Over voltage protection TP1 = +25°C, VI = 53 V, 0-100 % of
max IO 36.6 39 41.4 V
Vaux Auxiliary output voltage TP1 = +25°C, VI = 53 V, 0-100 % of
max IO 8 10 12 V
Iaux Auxiliary output current max IO, VI = 36-75 V 0 0.05 A
Note 1:See Operating Information section.
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
5
Ericsson Internal
PRODUCT SPECIFICATION 3 (10)
Prepared (also subject responsible if other) No.
ESECZHW 2/1301-BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) ECHWANG 2008-10-9 C
28V, 21.5A/600W Typical Characteristi cs PKY 4616 PI
Efficiency Power Dissipation
75
80
85
90
95
100
0 5 10 15 20 [A]
[%]
36 V
48 V
53 V
75 V
0
10
20
30
40
50
0 5 10 15 20 [A]
[W]
36 V
48 V
53 V
75 V
Efficiency vs. load current and input voltage at TP1 = +25°C Dissipated power vs. load current and input voltage at
TP1 = +25°C
Output Characteristics Current Limit Characteristics
27.4
27.6
27.8
28.0
28.2
28.4
0 5 10 15 20 [A]
[V]
36 V
48 V
53 V
75 V
0.0
7.0
14.0
21.0
28.0
35.0
12 15 18 21 24 27 30 [A]
[V]
36 V
48 V
53 V
75 V
Output voltage vs. load current at TP1 = +25°C Output voltage vs. load current at IO > max IO , TP1 = +25°C
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
6
Ericsson Internal
PRODUCT SPECIFICATION 4 (10)
Prepared (also subject responsible if other) No.
ESECZHW 2/1301-BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) ECHWANG 2008-10-9 C
28V, 21.5A/600W Typical Characteristi cs PKY 4616 PI
Start-up Shut-down
Start-up enabled by connecting VI at:
TP1 = +25°C, VI = 53 V
IO = 21.5 A resistive load.
Top trace: output voltage 10 V/div.
Bottom trace: input voltage 20 V/div.
Time scale: 5 ms/div.
Shut-down enabled by disconnecting VI at:
TP1 = +25°C, VI = 53 V,
IO = 21.5 A
Top trace: output voltage 10 V/div.
Bottom trace: input voltage 20 V/div.
Time scale: 50 ms/div.
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
TP1 = +25°C, VI = 53 V
IO = 21.5 A resistive load.
Trace: output voltage 100 mV/div.
Time scale: 2 us/div.
Output voltage response to load current step-
change 5.375-16.125-5.375A at: 1 A/us.
TP1=+25°C, VI = 53V.
Trace: output voltage 0.5 V/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:
(
)
⎥
⎦
⎤
⎢
⎣
⎡
Δ
Δ×+
−
Δ×
Δ+
=%%2100
%5.2 %100
10 o
V
adj
R
kΩ
Output Voltage Adjust Downwards, Decrease:
(
)
2
%
100
10 −
Δ
=
adj
R
kΩ
Example: Increase 4% =>Vout = 29.33 Vdc
()
⎥
⎦
⎤
⎢
⎣
⎡×+
−
×
+
442100
45.2 4100
2.2810
kΩ = 2663 kΩ
Active adjust
The output voltage may be adjusted using a current applied to the Vadj
pin referred to -Sense. This current is calculated by using the following
equations:
Output Voltage Adjust Upwards, Increase:
pin adjust into A 10 x2,5 V -6
=+ 0%1
Output Voltage Adjust Downwards, decrease:
pin adjustof out A 10 x2,5 V -6
=− 0%1
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
7
Ericsson Internal
PRODUCT SPECIFICATION 5 (10)
Prepared (also subject responsible if other) No.
ESECZHW 2/1301-BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) ECHWANG 2008-10-9 C
28V, 21.5A/600W Typical Characteristi cs PKY 4616 PI
Output Current Derating – Open frame
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
Output Current Derating – Base plate Thermal Resistance – Base plate
0
5
10
15
20
0 20 40 60 80 100 [°C]
[A]
3.0 m/s
2.0 m/s
1.5 m/s
1.0 m/s
0.5 m/s
Nat. Conv.
0
1
2
3
4
5
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 = 53 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. VI = 53 V.
Output Current Derating – Cold w all sealed box
Tamb 85 C
0
5
10
15
20
25
30
35
0 20 40 60 80 100 [°C]
A
Available load current vs. base plate temperature.
VI = 53 V. See Thermal Consideration section.
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
8
Ericsson Internal
PRODUCT SPECIFICATION 6 (10)
Prepared (also subject responsible if other) No.
ESECZHW 2/1301-BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) ECHWANG 2008-10-9 C
28V, 25A/700W Electrical Specification PKY 4716 PI
TP1 = -40 to +100ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.
Typical values given at: TP1 = +25°C, VI= 53 VI max IO, unless otherwise specified under Conditions.
Additional Cin = 220 µF.See Operating Information section for selection of capacitor types.
Characteristics Conditions min typ max Unit
VI Input voltage range 36 75 V
VIoff Turn-off input voltage Decreasing input voltage 32.1 33 34.5 V
VIon Turn-on input voltage Increasing input voltage 33.3 35 35.5 V
CI Internal input capacitance 35.2 μF
PO Output power 0 700 W
50 % of max IO 94.0
max IO 92.5 94.1
50 % of max IO, VI = 48 V 94.3
η Efficiency
max IO, VI = 48 V 93 94.2
%
Pd Power Dissipation max IO 44.0 58.9 W
Pli Input idling power IO = 0 A, VI = 53 V 5.7 17 W
PRC Input standby power VI = 53 V (turned off with RC) 0.2 0.3 W
fs Switching frequency 0-100 % of max IO 145 150 155 kHz
VIOVP Input over voltage protection 0-100 % of max IO 80 83 86 V
VOi Output voltage initial setting and
accuracy TP1 = +25°C, VI = 53 V, IO = 21.5 A 27.72 28.0 28.28 V
Output adjust range See operating information 15.0 32.0 V
Output voltage tolerance band 10-100 % of max IO 27.58 28.42 V
Idling voltage IO = 0 A 27.44 28.56 V
Line regulation max IO 20 80 mV
VO
Load regulation VI = 53 V, 1-100 % of max IO 20 80 mV
Vtr Load transient
voltage deviation ±550 mV
ttr Load transient recovery time
VI = 53 V, Load step 25-75-25 % of
max IO, di/dt = 5 A/μs
see Note 1 20 µs
tr Ramp-up time
(from 10−90 % of VOi) 10 20 ms
ts Start-up time
(from VI connection to 90 % of VOi)
10-100 % of max IO
17 20 ms
max IO 0.06 ms
tf VI shut-down fall time
(from VI off to 10 % of VO) IO = 0 A 2.7 s
RC start-up time max IO 15 ms
max IO 0.06 ms
tRC RC shut-down fall time
(from RC off to 10 % of VO) IO = 0 A 2.7 s
IO Output current 0 25 A
Ilim Current limit threshold TP1 < max TP1 26 32 37.5 A
Isc Short circuit current TP1 = 25ºC, see Note 2 32.5 38 A
Cout Recommended Capacitive Load TP1 = 25ºC 0 TBD µF
VOac Output ripple & noise See ripple & noise section,
max IO, VOi 200 370 mVp-p
OVP Over voltage protection TP1 = +25°C, VI = 53 V, 0-100 % of
max IO 36.6 39 41.4 V
Vaux Auxiliary output voltage TP1 = +25°C, VI = 53 V, 0-100 % of
max IO 8 10 12 V
Iaux Auxiliary output current max IO, VI = 36-75 V 0 0.05 A
Note 1: Cout used at load transient test; 3300uF(15 x 220 uF)electrolytic capacitors, estimated ESR<12 mOhm
Note 2: See Operating Information section.
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
9
Ericsson Internal
PRODUCT SPECIFICATION 7 (10)
Prepared (also subject responsible if other) No.
ESECZHW 2/1301-BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) ECHWANG 2008-10-9 C
28V, 25A/700W Typical Characteristics PKY 4716 PI
Efficiency Power Dissipation
75
80
85
90
95
100
0 5 10 15 20 25 [A]
[%]
36 V
48 V
53 V
75 V
0
12
24
36
48
60
0 5 10 15 20 25 [A]
[W]
36 V
48 V
53 V
75 V
Efficiency vs. load current and input voltage at TP1 = +25°C Dissipated power vs. load current and input voltage at
TP1 = +25°C
Output Characteristics Current Limit Characteristics
27.4
27.6
27.8
28.0
28.2
28.4
0 5 10 15 20 25 [A]
[V]
36 V
48 V
53 V
75 V
0.0
7.0
14.0
21.0
28.0
35.0
12 16 20 24 28 32 36 [A]
[V]
36 V
48 V
53 V
75 V
Output voltage vs. load current at TP1 = +25°C Output voltage vs. load current at IO > max IO , TP1 = +25°C
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
10
Ericsson Internal
PRODUCT SPECIFICATION 8 (10)
Prepared (also subject responsible if other) No.
ESECZHW 2/1301-BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) ECHWANG 2008-10-9 C
28V, 25A/700W Typical Characteristics PKY 4716 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: output voltage 10 V/div.
Bottom trace: input voltage 50 V/div.
Time scale: 10 ms/div.
Shut-down enabled by disconnecting VI at:
TP1 = +25°C, VI = 53 V,
IO = 25 A
Top trace: output voltage 10 V/div.
Bottom trace: input voltage 20 V/div.
Time scale: 50 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 100 mV/div.
Time scale: 2 us/div.
Output voltage response to load current step-
change 6.25-18.75-6.25A at: 1 A/us.
TP1=+25°C, VI = 53V.
Top trace: output voltage (1 V/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:
(
)
⎥
⎦
⎤
⎢
⎣
⎡
Δ
Δ×+
−
Δ×
Δ+
=%%2100
%5.2 %100
10 o
V
adj
R
kΩ
Output Voltage Adjust Downwards, Decrease:
(
)
2
%
100
10 −
Δ
=
adj
R
kΩ
Example: Increase 4% =>Vout = 29.33 Vdc
()
⎥
⎦
⎤
⎢
⎣
⎡×+
−
×
+
442100
45.2 4100
2.2810
kΩ = 2663 kΩ
Active adjust
The output voltage may be adjusted using a current applied to the Vadj
pin referred to -Sense. This current is calculated by using the following
equations:
Output Voltage Adjust Upwards, Increase:
pin adjust into A 10 x2,5 V -6
=+ 0%1
Output Voltage Adjust Downwards, decrease:
pin adjustof out A 10 x2,5 V -6
=− 0%1
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
11
Ericsson Internal
PRODUCT SPECIFICATION 9 (10)
Prepared (also subject responsible if other) No.
ESECZHW 2/1301-BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) ECHWANG 2008-10-9 C
28V, 25A/700W Typical Characteristics PKY 4716 PI
Output Current Derating – Open frame
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
Output Current Derating – Base plate Thermal Resistance – Base plate
0
5
10
15
20
25
0 20 40 60 80 100 [°C]
[A]
3.0 m/s
2.0 m/s
1.5 m/s
1.0 m/s
0.5 m/s
Nat. Conv.
0
1
2
3
4
5
0.00.51.01.52.02.53.0[m/s]
[°C/W]
Available load current vs. ambient air temperature and airflow at
VI = 53 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. VI = 53 V.
Output Current Derating – Cold w all sealed box
Tamb 85 C
0
5
10
15
20
25
30
35
0 20 40 60 80 100 [°C]
A
Available load current vs. base plate temperature.
VI = 53 V. See Thermal Consideration section.
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
12
Ericsson Internal
PRODUCT SPECIFICATION 1 (6)
Prepared (also subject responsible if other) No.
ESECZHW 3/1301- BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) ECHWANG 2008-10-9 C
PKY
Input 48V
Output: 700/600W
C1 C2
C4
C5
L1 L2
C6
C3
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
150 kHz for PKY 4716 PI @ V
I
= 53 V, max I
O
.
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, C2, C3 = 5µF
(100V, ceramic)
C4, C5 = 10nF
(2000V, ceramic)
C6 = 2x470µF
(100V, electrolytic)
L1, L2 = 200µH
common mode
inductor
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
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
13
Ericsson Internal
PRODUCT SPECIFICATION 2 (6)
Prepared (also subject responsible if other) No.
ESECZHW 3/1301- BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) ECHWANG 2008-10-9 C
Operating information
Input Voltage
The input voltage range 36 to 75Vdc meets the requirements
of the European Telecom Standard ETS 300 132-2 for normal
input voltage range in –48 and –60 Vdc systems, -40.5 to -
57.0 V and –50.0 to -72 V respectively.
At input voltages exceeding 75 V, the power loss will be higher
than at normal input voltage and T
P1
must be limited to
absolute max +100°C. The absolute maximum continuous
input voltage is 100 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 1V.
Remote Control (RC)
The modules are equipped with a remote On/Off control
function. An optocoupler in the remote control circuit provides
a galvanic isolation (1500V DC minimum) between the
remote control pins and the rest of the module’s circuity.
Positive and negative RC logic options are available.
Cycling (Off and On sequence) of the RC input will restart the
module if latched after activation of the output overvoltage
protection function.
The standard version has a “positive logic” remote control and
the module will be off until a sufficient current between the RC
pins is provided.
The figure above presents an example of a circuit which turns
on the standard version module. The minimum current to
guarantee the activation of the RC input is 1.5mA. The
minimum activation voltage over the RC pins is 5.0V. To
guarantee that the RC input is not activated, the current must
be lower than 50µA or the voltage lower than 1.3V.
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 220 µF/100V 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. Approximately doubled capacitance value is
required for a 24 V input voltage source compared to a 48V
input voltage source.
External Decoupling Capacitors
When powering loads with significant dynamic current
requirements, the voltage regulation at the point of load can
be improved by addition of decoupling capacitors at the load.
The 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 (V
adj
)
The products have an Output Voltage Adjust pin (V
adj
). 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. When Vout is 15V,the max output current is
25A for PKY4716,that is to say,the power is 375W.
To increase the voltage the resistor should be connected
between the V
adj
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 V
adj
pin and –Sense pin.
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
14
Ericsson Internal
PRODUCT SPECIFICATION 3 (6)
Prepared (also subject responsible if other) No.
ESECZHW 3/1301- BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) ECHWANG 2008-10-9 C
Operating information continued
Parallel Operation
Two or more products may be paralleled for redundancy or
increased output power. External active load sharing circuit
are recommended to provide the maximum balanced current
sharing.
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 product is protected from thermal overload by an internal
Over Temperature Protection circuit (OTP). When the PCB
temperature (TC reference point) exceeds the OTP T
threshold value, the output voltage will be gradually
decreased. This will decrease the power loss inside the
DC/DC power module and protect the module from hazardous
temperatures.
Over Voltage Protection (OVP)
The module includes an output Over Voltage Protection (OVP)
function. In the unlikely event of an output over voltage
condition, the OVP circuit will shut down the output voltage.
The module will be latched in “Off” state unless either the input
voltage or RC input is cycled (switched Off and On again).
Over Current Protection (OCP)
The moduleinclude current limiting circuitry for protection at
continuous overload.
In case of overload, the output voltage will significantly
decrease. The converter will resume normal operation after
removal of the overload. The load distribution should be
designed for the maximum specified output short circuit
current.
Pre-bias Start-up
The module is able to start-up properly under pre-bias output
condition. During the start-up, the module does not sink
current from an external pre-bias source present at the output
terminals.
Power Good
“Power Good” function is provided. It is a “negative logic” open
collector output which can drive to “low” an external circuit
when the module operates normally.
The PG output will turn level “high” during fault conditions
(e.g. over temperature or over voltage) or when the output is
turned off with the remote control.
Auxiliary output voltage (AUX)
The module provides a power source referred to – sense
terminal. It is intended to be used as a power source for
external circuits, e.g. remote control. The auxiliary output
voltage is active whenever an input voltage in range between
from 35V to 80V is provided.
The nominal auxiliary output voltage is 10V. Maximum
allowed load is 50mA.The auxiliary output source is not short
circuit protected. If it is overloaded, the main converter will
be switched off.
An example of a 5V/45mA power supply driven by the
auxiliary output voltage is given in the figure below.
Thermal Consideration
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
15
Ericsson Internal
PRODUCT SPECIFICATION 4 (6)
Prepared (also subject responsible if other) No.
ESECZHW 3/1301- BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) ECHWANG 2008-10-9 C
General
The products are designed to operate in different thermal
environments and sufficient cooling must be provided to
ensure reliable operation.
Cooling of the PKY series power modules is achieved mainly
by conduction from the baseplate to a heatsink (“cold wall”).
The PKY series power modules can also operate without a
heatsink but sufficient airflow must be provided. 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 V
in
= 53 V.
The product is tested on a 254 x 254 mm, 35 µm (1 oz),
8-layer test board mounted vertically in a wind tunnel with a
cross-section of 608 x 203 mm.
For products with base plate used in a sealed box/cold wall
application, cooling is achieved mainly by conduction through
the cold wall. The Output Current Derating graphs are found in
the Output section for each model. The product is tested in a
sealed box test set up with ambient temperatures 85°C. See
Design Note 028 for further details.
Proper cooling of the product can be verified by measuring the
temperature at positions P1, P2, P3, P4 and P5. The
temperature at these positions should not exceed the max
values provided in the table below. The number of points may
vary with different thermal design and topology.
See Design Note 019 for further information.
Position Description Temp. limit
P1 Baseplate 100º C
P2 M1 120º C
P3 PCB 125º C
P4 D15 120º C
P5 T16 120º C
Definition of reference temperature T
P1
The reference temperature is used to monitor the temperature
limits of the product. Temperatures above maximum T
P1
,
meassured at the reference point P1 are not allowed and may
cause degradation or permanent damage to the product. T
P1
is
also used to define the temperature range for normal operating
conditions. T
P1
is defined by the design and used to guarantee
safety margins, proper operation and high reliability ot the
product.
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
16
Ericsson Internal
PRODUCT SPECIFICATION 5 (6)
Prepared (also subject responsible if other) No.
ESECZHW 3/1301- BMR 638/1 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) ECHWANG 2008-10-9 C
Ambient Temperature Calculation
For products with base plate the maximum allowed ambient
temperature can be calculated by using the thermal resistance.
1. The power loss is calculated by using the formula
((1/η) - 1) × output power = power losses (Pd).
η = efficiency of product. E.g. 93.3% = 0.933
2. Find the thermal resistance (Rth) in the Thermal Resistance
graph found in the Output section for each model. Note that
the thermal resistance can be significantly reduced if a
heat sink is mounted on the top of the base plate.
Calculate the temperature increase (∆T).
∆T = Rth x Pd
3. Max allowed ambient temperature is:
Max T
P1
- ∆T.
E.g. PKY 4716 PI at 2m/s:
1.
(( ) -
1) × 700 W = 50.27 W
2. 50.27 W × 1.1°C/W = 55.3°C
3. 100 °C – 55.3°C = max ambient temperature is 44.7°C
The actual temperature will be dependent on several factors
such as the PCB size, number of layers and direction of
airflow.
The above calculations of the maximum ambient temperature
are based on the thermal resistance of the PKY module
without a heatsink.
Connections
Pin Designation Function
1 +On/Off Remote on/off “plus” input
2 -On/Off Remote on/off “minus” input
3 +In Positive input
4 -In Negative input
5 AUX Auxiliary power supply output
6 PWR Good Power Good output
7 Optional N/A
8 Vadj Output Voltage Adjust
9 +Sense Positive remote sense
10 -Sense Negative remote sense
11 -Vout Negative output voltage
12 -Vout Negative output voltage
13 -Vout Negative output voltage
14 +Vout Positive output voltage
15 +Vout Positive output voltage
16 +Vout Positive output voltage
1
0.933
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
17
Ericsson Internal
PRODUCT SPEC. MECHANICAL 1 (2)
Prepared (also subject responsible if other) No.
EPEIHLI 4/1301-BMR 638 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) See § 1 2008-10-10 B
Mechanical Information
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
18
Ericsson Internal
PROD. SPECIFICATION MECHANICAL 1 (3)
Prepared (also subject responsible if other) No.
MICUPEZ 5/1301-BMR 638
Approved Checked Date Rev Reference
MPM/BK [N. Johansson] See §1 2007-06-27 A
Soldering Information — Through Hole Mounting
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
The products are delivered in antistatic trays.
Tray Specifications
Material Antistatic PE Foam
Surface resistance 105 < Ohm/square < 1012
Bakability The trays are not bakable
Tray capacity 5 products/tray
Tray thickness 26.0 mm [1.024 inch]
Box capacity 5 products (1 full tray/box)
Tray weight 55 g empty, 880 g full tray
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
19
Ericsson Internal
PROD. SPECIFICATION MECHANICAL 2 (3)
Prepared (also subject responsible if other) No.
MICUPEZ 5/1301-BMR 638
Approved Checked Date Rev Reference
MPM/BK [N. Johansson] See §1 2007-06-27 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
Operational life test MIL-STD-202G method 108A Duration 1000 h
Resistance to soldering heat IEC 60068-2-20 Tb
Method 1A
Solder temperature
Duration
270°C
10-13 s
Robustness of terminations IEC 60068-2-21 Test Ua1 Through hole mount product All leads
Solderability
IEC 60068-2-20 test Ta 2
Preconditioning
Temperature, SnPb Eutectic
Temperature, Pb-free
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
E
PKY 4000 PI series
DC/DC converters, Input 36-75 V, Output up to 25 A/700 W
EN/LZT 146 380 R2A Oct 2008
© Ericsson Power Modules AB
Technical Specifi cation
20
