PKL 4000 Series
DC/DC converter
Input 36-75 Vdc
Output up to 80 A/300 W
Key Features
• "THE double P" extended Half-brick
61.5x61x12.7 mm (2.42x2.4x0.5 in)
• Low Output Ripple, 60 mVp-p Typ.
• Parallelable with no external
components
• High efficiency, typ. 88 % at 1.8 Vout
80A (full) load
• 1500 Vdc input to output isolation,
meets isolation requirements equivalent
to Basic Insulation according to
IEC/EN/UL 60950
• More than 3.7 million hours predicted
MTBF at 90 °C case temperature
The PKL 4000 Series of high efficiency DC/DC
converters are designed to provide high quality on-
board power solutions in distributed power architectures
used in “Inter-networking” equipment in Wireless and
Wired Communications and Datacom applications.
The PKL 4000 Series is an extended version of the
industry standard half brick footprint that has been
enhanced to include two additional output pins for
connection reliability and higher output current. The
PKL Series uses the most advanced patented topology
and synchronous rectification technology and achieves
a typical efficiency up to 92%. This product features
fast dynamic response times and low output ripple,
which are important parameters when supplying low-
voltage logics. Ericsson’s PKL 4000 Series addresses
the emerging telecom market for applications in the
multi-service network by specifying the input voltage
range in accordance with ETSI specifications. Included
as standard features are over-voltage protection, under-
voltage protection, over-temperature protection, soft-
start, short circuit protection, remote sense, remote
on/off, and industry standard output trim adjustment.
The PKL 4000 Series also offers the flexibility of
using optional heatsinks when needed, enabling
reduced airflow, extended reliability, and higher
ambient temperature operation. These converters are
manufactured in highly automated manufacturing
lines and meet world-class quality levels.
Ericsson Power Modules is an ISO 9001 (since 1991)
and ISO14001 certified Supplier.
E
Datasheet
Absolute Maximum Ratings
Characteristics
T
C
T
S
V
I
V
ISO
V
tr
V
RC
V
adj
Note:
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.
Safety
min
-40
-40
-40
-0.5
1500
100
-0.5
-0.5
15
2xV
o
max
+100
+110
+125
+80
Unit
˚C
˚C
Vdc
Vdc
Vdc
Vdc
Vdc
Operating Case Temperature PKL
PKL4118B PIT
Storage temperature
Input voltage
Isolation voltage (input to output test voltage)
Input over voltage condition (100 ms)
Remote Control Voltage, pin 2
Maximum input, pin 6. (measured from pin 1)
The PKL 4000 series DC/DC converters
are designed in accordance with safety
standards IEC/EN/UL 60 950,
Safety of
Information Technology Equipment.
The PKL 4000 series DC/DC converters
are UL 60 950 recognized and certified
in accordance with EN 60 950.
The DC/DC converter should be
installed in the end-use equipment, in
accordance with the requirements of the
ultimate application. The input source
must be isolated by minimum Basic
Insulation from the primary circuit in
accordance with IEC/EN/UL 60 950.
If the input voltage to the DC/DC
converter is 75 V dc 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 V
dc. 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/UL 60 950.
It is recommended that a fast blow fuse
with a rating twice the maximum input
current per selected product be used at
the input of each DC/DC converter. If a
fault occurs in the 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 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 for 60 seconds. Leakage current is
less than 1µA at nominal input voltage.
The flammability rating for all
construction parts of the DC/DC
converter meets UL 94V-0.
Input
T
C
<T
C max
unless otherwise specified
Characteristics
V
I
V
Ioff
V
Ion
C
I
I
Iac
P
II
P
RC
Input voltage range
1)
Turn-off input voltage
Turn-on input voltage
Input capacitance
Reflected ripple current
Input idling power
Input standby power
(turned off with RC)
Conditions
min
36
typ
max
75
Unit
Vdc
Vdc
Vdc
µF
A
p-p
Ramping from higher
voltage
Ramping from lower
voltage
30
32
32.5
34.4
2.18
35
36
5 Hz to 20 MHz,
V
I
= 53 V
I
o
= 0, V
I
= 53 V
V
I
= 53 V, RC activated
10
4.14
4.46
0.055
W
W
Environmental Characteristics
Characteristics
Random Vibration
IEC 68-2-34E
d
Frequency
Spectral density
Duration
Frequency
Amplitude
Acceleration
Number of cycles
Peak acceleration
Duration
Temperature
Number of cycles
Temperature
Humidity
Duration
Temperature, solder
Duration
Water
Isopropyl alcohol
Glycol ether
Temperature
Duration
Temperature
Duration
10 ... 500 Hz
0.025 g
2
/Hz
10 min each direction
10 ... 500 Hz
0.75 mm
10 g
10 in each axis
100 g
6 ms
-40 ... +100
˚C
300
+85
˚C
85 % RH
1000 hours
260
˚C
10 ...13 s
+55 ±5
˚C
+35 ±5
˚C
+35 ±5
˚C
-45
˚C
2h
+125
˚C
1000 h
Sinusoidal
Vibration
Shock
(half sinus)
Temperature
change
Heat/Humidity
Solder heat
stability
Resistance to
cleaning solvents
Cold (in operation)
Storage test
IEC 68-2-6 F
c
IEC 68-2-27 E
a
IEC 68-2-14 N
a
IEC 68-2-3 C
a
IEC 68-2-20 1A
IEC 68-2-45 XA
Method 2
IEC 68-2-1 A
d
IEC 68-2-2 B
a
PKL 4000 Series Datasheet
2
EN/LZT 146 047 R4A © Ericsson Power Modules, June 2004
Mechanical Data
5.3
[0.21]
PIN
EXT.
12.7
[0.50]
OVERALL
HEIGHT
61.5 [2.42] OVERALL LENGTH
4.82
[0.19]
5.1
[0.20]
12.72
[0.50]
-INPUT
-OUTPUT
51.86 [2.042]
12.72
[0.50]
25.40
[1.000]
35.56
[1.400]
50.8
[2.00]
10.16
[0.400]
10.16
[0.400]
17.78
[0.700]
25.40
[1.000]
CASE
-SENSE
BOTTOM VIEW
REMOTE
ON/OFF
TRIM
+SENSE
+OUTPUT
+INPUT
35.56
[1.400]
1.02 [0.040] DIA. PLATED
BRASS PINS
TYPICAL 7 PLACES
61.0
[2.40]
OVERALL
WIDTH
3.47
[0.137]
8.42
[0.332]
2.06 [0.080] DIA. PLATED
BRASS PINS
TYPICAL 4 PLACES
M3 X [0.5] MOUNTING INSERTS
TYPICAL 4 PLACES
MAX. SCREW TORQUE: 0,44 N-M [3.9 IN-LBS].
FOOTPRINT
3.00 [0.12] 4 places
+INPUT
+OUTPUT
REMOTE
ON/OFF
+SENSE
2.43 [0.096] 4 places
1.42 [0.056] 7 places
TOP VIEW
CASE
TRIM
-SENSE
-INPUT
-OUTPUT
Dimensions: mm [inches]
Tolerances: .x ± .5 [.xx ± 0.02]
.xx ± .25 [.xxx ±0.010]
Connections
Pin
1
2
3
4
5, 10
6
7
8
9, 11
Fundamental Circuit Diagram
Function
Negative Input
4
Primary
Secondary
Designation
- In
Case
RC
+ In
- Out
- Sen
V
adj
+ Sen
+ Out
Connected to baseplate
Remote Control
Positive Input
3
Control
11
9
Negative Output
Negative Sense
Output voltage adjust
Positive Sense
Positive Output
1
Isolated
Feedback
Control
5
10
7
8
6
For more information about the functions see Operating Information
Weight
PKL 4000 Series, 110 g
Pins
Material: Brass Alloy
Plating: Tin/Lead over Nickel
PKL 4000 Series Datasheet
3
EN/LZT 146 047 R4A © Ericsson Power Modules, June 2004
PKL 4118 PIT Output
T
C
= –40…+100°C, V= 36 ...75V, sense pins connected to output pins unless otherwise specified.
I
Output
Characteristics
Output voltage initial setting
and accuracy
Output adjust range
Output voltage tolerance band
Idling voltage
V
O
Line regulation
Load regulation
V
tr
t
tr
t
r
t
s
I
O
P
Omax
I
lim
I
sc
V
Oac
SVR
OVP
Load transient
voltage deviation
Load transient recovery time
Ramp-up time
Start-up time
Output current
Max output power
Current limit threshold
Short circuit current
Output ripple & noise
Supply voltage rejection (ac)
Over voltage protection
At V
O
= V
Onom
T
C
< T
Cmax
T
C
= 25 °C
I
O
= I
Omax
, f < 4-20 MHz
f = 100 Hz sinewave , 1 Vp-p , V
I
= 53 V
V
I
= 53 V
53
2.51
Unit
max
1.83
2.00
1.854
1.900
V
V
V
V
mV
mV
mV
µs
16
20
60
ms
ms
A
W
Conditions
min
T
C
= +25 °C, V
I
= 53 V, I
O
= I
Omax
I
O
= I
Omax
I
O
= 0.1...1 x I
Omax
I
O
= 0
I
O
= I
Omax
V
I
= 53 V, I
O
= 0.01...1 x I
Omax
I
O
= 0.1...1 x I
Omax ,
V
I
= 53 V
Load step = 0.25 x I
Omax
di/dt = 1A/µs
I
O
= 0.1...1 x I
Omax ,
V
I
= 53
loadstep = 0.25x I
Omax
I
O
= 0.1...0.9 x V
O
From V
I
connected to V
O
= 0.9 x V
OI
0
108
65.2
69
66.5
70
68.5
71
100
1.77
1.44
1.746
1.746
5
5
+200
-200
220
12
16
typ
1.8
V
Oi
15
15
A
A
mV
p-p
dB
V
Miscellaneous
T
C
= –40…+100°C, V= 36 ...75V, sense pins connected to output pins unless otherwise specified.
I
Characteristics
η
η
P
d
f
s
I
Imax
Efficiency - 50% load
Efficiency - 100% load
Power Dissipation
Switching frequency
Maximum input current
Conditions
T
C
= +25 °C, V
I
= 53 V, I
O
= 0.5 x I
Omax
T
C
= +25 °C, V
I
= 53 V, I
O
= I
Omax
T
C
= +25 °C, V
I
= 53 V, I
O
= I
Omax
I
O
= 0 ... 1.0 x I
Omax
1.1 x V
Oi
x I
Omax
/
η /
V
Imin
min
typ
89
86.5
18
150
max
Unit
%
%
W
kHz
3.9
A
PKL 4000 Series Datasheet
4
EN/LZT 146 047 R4A © Ericsson Power Modules, June 2004
PKL 4118 PIT Typical Characteristics
Efficiency
[%]
Output Current Derating
[A]
95
90
85
80
75
70
0
20
40
60
80
[A]
Efficiency vs. load current and input voltage at T
C
= +25 °C
70
60
50
40
36 V
48 V
53 V
75 V
3.0 m/s (600 lfm)
2.5 m/s (500 lfm)
2.0 m/s (400 lfm)
1.5 m/s (300 lfm)
1.0 m/s (200 lfm)
0.5 m/s (100 lfm)
Nat. Conv.
30
20
10
0
0
20
40
60
80
100
[°C]
Available load current vs. ambient air temperature and
airflow at V
in
= 53 V.
Output Characteristic
[V]
Power Dissipation
[W]
1.90
40
1.85
30
36 V
48 V
53 V
75 V
1.80
20
1.75
10
1.70
0
20
40
60
80
[A]
Output voltage vs. load current at T
C
= +25 °C, V
in
= 53 V.
0
0
20
40
60
80
[A]
Dissipated power vs. load current and input voltage at
T
C
= +25 °C
Start-Up
Turn-Off
Start-up at I
O
= 60 A resistive load at T
C
= +25 °C,
V
in
= 53 V. Start enabled by connecting V
in
.
Top trace: output voltage (1 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: 20 ms/div.
Turn-off at I
O
= 60 A resistive load at T
C
= +25 °C,
V
in
= 53 V. Turn-off enabled by disconnecting V
in
.
Trace: output voltage (1 V/div.).
Time scale: 5 ms/div.
PKL 4000 Series Datasheet
5
EN/LZT 146 047 R4A © Ericsson Power Modules, June 2004
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