PKJ 4000E PI
DC/DC converter
Input 36-75 Vdc
Output up to 40A/100W
Key Features
• Industry standard Half-brick
58x61x8.5 mm (2.3x2.4x0.33 in)
• Low profile, max 8.5 mm (0.33 in)
• High efficiency, typ. 93 % at 3.3 Vout
half load
• 1500 VDC input to output isolation,
meets isolation requirements equivalent
to Basic Insulation according to
IEC/EN/UL 60950
• More than 6 million hours predicted
MTBF at 55° C ambient and 1 m/s
(200 lfm) airflow
Safety Approvals
Design for Environment
The PKJ 4000E series of high efficiency DC/DC converters
are designed to provide high quality on-board power
solutions in distributed power architectures used
in Internetworking equipment in wireless and wired
communications applications.
The PKJ 4000E series has industry standard half brick
footprint and pin-out and is only 8.5 mm (0.33 in) high.
This makes it extremely well suited for narrow board pitch
applications with board spacing down to 15 mm (0.6
in). The PKJ 4000E series uses patented synchronous
rectification technology and achieves an efficiency up to
89% at full load. Ericsson's PKJ 4000E 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 output over-voltage
protection, input under-voltage protection, over
temperature protection, soft-start, output short circuit
protection, remote sense, remote control, and output
voltage adjust function.
These converters are designed to meet high reliability
requirements and are manufactured in highly automated
manufacturing lines and meet world-class quality levels.
Ericsson Power Modules is an ISO 9001/14001 certified
supplier.
E
Datasheet
Absolute Maximum Ratings
Characteristics
T
Pcb
T
S
V
I
V
ISO
V
tr
V
RC
V
RC
V
adj
Maximum Operating Pcb Temperature
Storage temperature
Input voltage
Isolation voltage (input to output test voltage)
Input voltage transient for 100 ms
Negative logic
Positive logic
Maximum input
Safety
min
-40
-55
-0.5
-0.5
max
+125
+125
+80
1500
100
75
6
2xV
oi
Unit
˚C
˚C
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
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.
Input
T
Pcb
<T
Pcb max
unless otherwise specified
Characteristics
V
I
V
Ioff
V
Ion
C
I
I
Iac
P
II
P
RC
Input voltage range
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
32
34
2
TBD
2
0.25
max
75
Unit
Vdc
Vdc
Vdc
µF
mA
p-p
W
W
Ramping from higher
voltage
Ramping from lower
voltage
5 Hz to 20 MHz
I
o
= 0, V
I
= 53 V
V
I
= 53 V, RC activated
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
0.07 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
2 h
+125 ˚C
1000 h
The PKJ 4000 E series DC/DC
converters are designed in accordance
with safety standards IEC/EN/UL 60
950, Safety
of Information Technology
Equipment. The PKJ 4000 E 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 of 10A be used at the input
of each DC/DC converter. The PKJ se-
ries DC/DC converters are approved for
a maximum fuse rating of 15A. 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 overhea-
ting.
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 1uA at nominal input voltage.
The flammability rating for all
construction parts of the DC/DC
converter meets UL 94V-0.
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
PKJ 4000E PI
EN/LZT 146 025 R8A © Ericsson Power Modules, June 2007
PKJ 618HE PI Typical Characteristics
Efficiency
Output Current Derating
Efficiency vs. load current and input voltage at T
Pcb
=+25 °C
Available load current vs. ambient air temperature and airflow at
Vin=53 V. DC/DC converter mounted vertically with airflow and
test conditions as per the Thermal consideration section.
Power Dissipation
Thermal Resistance
Dissipated power vs. load current and input voltage at
T
Pcb
=+25 °C
Thermal resistance vs. airspeed measured at the converter.
Tested in windtunnel with airflow and test conditions as per
the Thermal consideration section.
consideration section.
Output Characteristic
Output voltage vs. load current at T
Pcb
=+25 °C, Vin=53 V.
PKJ 4000E PI
EN/LZT 146 025 R8A © Ericsson Power Modules, June 2007
5
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