PKJ 4000B PIT
40A DC/DC Power Modules
48V Input Series; 1.8V, 2.5V and 3.3V Outputs
High efficiency 92% Typ at full load
High power density, 48.2 W/in
3
, (3.3V @ 40A)
Fast dynamic response, 200s,
+
- 200 mVpeak Typ
Low output ripple, 80 mVp-p Typ
Parallelable with no external components
Wide input voltage range (36-75V)
1,500Vdc isolation voltage
Max case temperature +100C
UL 1950/UL
C
Recognized
TUV 60 950 Type Approved
The PKJ 4000B series represents another one of Ericsson's
"industry first" achievements in the continued development of
our "Third Generation" of high-density, high-efficiency power
modules. This module packs 48.2 W/in
3
at 92% efficiencies
(3.3V @ 40A) in an industry standard half-brick package. These
breakthrough features come from using the most advanced
patented topology utilizing integrated magnetics and
synchronous rectification on a low-resistivity multilayer PCB.
This product features fast dynamic response times and low
output ripple, which are important parameters when supplying
low-voltage logics. The PKJ 4000B series also is especially
suited for limited board space and high dynamic load
applications.
Ericsson's PKJ 4000B Power Module has been designed with
the converging "New Telecoms" market in mind, by specifying
the input voltage range in accordance with ETSI specifications.
The PKJ 4000B series also offers over-voltage protection,
under-voltage protection, over-temperature protection, soft-
start, and is short circuit proof.
These modules are manufactured on highly automated
manufacturing lines. Ericsson's world-class quality commitment
is reflected in our standard five-year warranty. Ericsson Inc.,
Microelectronics has been an ISO 9001 certified supplier
since 1991.
For a complete product program, please reference the back page.
Data Sheet AE/LZT 108 4761 R1 Ericsson Inc., Microelectronics May 2001
Characteristics
min
max
Unit
T
C
Maximum Operating Case Temperature
-40
+100
C
T
S
Storage temperature
-40
+125
C
V
I
Continuous input voltage
-0.5
+80
Vdc
V
ISO
Isolation voltage
1,500
Vdc
(input to output test voltage)
V
RC
Remote control voltage
12
Vdc
I
2
t
Inrush transient
1
A
2
s
Characteristics
Conditions
min
typ max
Unit
V
I
Input voltage
36
75
Vdc
range
1)
V
Ioff
Turn-off input
Ramping from
31
33
Vdc
voltage
higher voltage
V
Ion
Turn-on input
Ramping from
34
36
Vdc
voltage
lower voltage
C
I
Input capacitance
3.5
F
I
Iac
Reflected
5 Hz to 20 MHz
mA p-p
ripple current
72W
2.3
I
Imax
Maximum input
V
I
= V
I min
100W
3.2
A
current
132W
4.2
P
Ii
Input idling power
I
O
= 0
6
W
P
RC
Input
stand-by power
V
I
= 50V
RC open
0.4
0.6
W
(turned off with RC)
VTRIM Maximum input
6
Vdc
voltage on trim pin
Characteristics
Test procedure & conditions
Random IEC
68-2-34F
c
Frequency
10...500 Hz
Vibration
Spectral density
0.025 g2/Hz
Duration
10 min in each
direction
Sinusoidal
IEC 68-2-6 F
c
Frequency
10-500 Hz
Vibration
Amplitude
0.75mm
Acceleration
10g
# of cycles
10 in each axis
Shock
IEC 68-2-27 E
a
Peak acceleration
100 g
(half sinus)
Duration
3ms
Temperature
IEC 68-2-14 N
a
Temperature
-40C...+100C
change
Number of cycles
300
Accelerated
IEC 68-2-3 C
a
Temperature
85C
damp heat
with bias
Humidity
85% RH
Duration
1000 hours
Solder
IEC 68-2-20 T
b
Temperature, solder
260 C
resistibility
method IA
Duration
10...13 s
General
Absolute Maximum Ratings
Input
T
C
< T
Cmax
Environmental Characteristics
2
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.
For design margin and to enhance system reliability, it is
recommended that the PKJ 4000B series DC/DC power
modules are operated at case temperatures below 90C.
1) See also Input Voltage in the Operating
Information section
Safety
The PKJ 4000B Series DC/DC power modules are
designed to comply with EN 60 950 Safety of
information technology equipment including
electrical business equipment and are TUV
Type Approved.
The PKJ 4000B DC/DC power modules are also
recognized by UL and meet the applicable
requirements in UL 1950, Safety of information
technology equipment and applicable Canadian
safety requirements, i.e. UL
c
1950.
The isolation is an operational insulation in
accordance with EN 60 950. The DC/DC power
module should be installed in end-use equipment,
in compliance with the requirements of the
ultimate application, and is intended to be
supplied by an isolated secondary circuit.
Consideration should be given to measuring
the case temperature to comply with T
Cmax
when in operation.
When the supply to the DC/DC power
module meets all the requirements for SELV
(<60Vdc), the output is considered to remain
within SELV limits (level 3). If connected to a 60V
DC power system, reinforced insulation must be
provided in the power supply that isolates the
input from the mains. Single fault testing in the
power supply must be performed in combination
with the DC/DC power module to demonstrate
that the output meets the requirement for SELV.
One pole of the input and one pole of the output
is to be grounded or both are to be kept floating.
3
Data Sheet AE/LZT 108 4761 R1 Ericsson Inc., Microelectronics May 2001
Maximum Screw Torque: 3.9 in.-lbs. (0.44N-m)
Designation
Function
Pin # (for Ref.)
-IN
Negative input
1
CASE
Connected to base plate
2
RC
Remote control (primary). To turn-on
3
and turn-off the output
+IN
Positive input
4
-OUT
Negative output
5
-SEN
Negative remote sense
6
TRIM
Output voltage adjust
7
+SEN
Positive remote sense
8
+OUT
Positive output
9
Connections
Weight
80 grams
Case
Aluminum baseplate with metal standoffs
Pins
Pin material: Brass
Pin plating: Tin/Lead over Nickel
Mechanical Data
Safety (continued)
The galvanic isolation is verified in an electric strength test. The
test voltage (V
ISO
) between input and output is 1,500 Vdc for
60 sec. Leakage current is less than 1
A
@ 50Vdc.
Flammability ratings of the terminal support and internal plastic
construction details meet UL 94V-0.
A fuse should be used at the input of each PKJ 4000B series power
module. If a fault occurs in the power module, that imposes a
short on the input source, this fuse will provide the following two
functions:
Isolate the failed module from the input source so that the
remainder of the system may continue operation.
Protect the distribution wiring from
overheating.
A fast blow fuse should be used with a rating of 20A or less. It is
recommended to use a fuse with the lowest current rating, that is
suitable for the application.
Thermal Data
The PKJ 4000B series DC/DC power modules have a robust
thermal design that allows operation at case (baseplate) temperatures
(T
C
) up to +100C. The Output Derating Curves are based on an
Imput Voltage of 53V.
The graphs below show the allowable maximum output current to
maintain a maximum +100C case temperature. Note that the
ambient temperature is the air temperature adjacent to the power
module which is typically elevated above the room environmental
temperature.
The graphs below can be used to estimate case temperatures for
given system operating conditions (see Thermal Design). For further
information on optional heatsinks, please contact your local Ericsson
sales office.
0
20
40
60
80
100
0
5
10
15
20
25
30
35
40
0.5 m/s
0.2 m/s
Natural Convection
3.0 m/s
2.5 m/s
2.0 m/s
1.5 m/s
1.0 m/s
Output Current Derating (No Heatsink) for 1.8V
PKJ 4718B PIT
Ambient Temperature (C)
Output Current (A)
0
20
40
60
80
100
0
5
10
15
20
25
30
35
40
Output Current Derating (No Heatsink) for 2.5V
PKJ 4119B PIT
Ambient Temperature (C)
Output Current (A)
0.5 m/s
0.2 m/s
Natural Convection
3.0 m/s
2.5 m/s
2.0 m/s
1.5 m/s
1.0 m/s
0
20
40
60
80
100
0
5
10
15
20
25
30
35
40
Output Current Derating (No Heatsink) for 3.3V
PKJ 4110B PIT
Ambient Temperature (C)
Output Current (A)
0.5 m/s
0.2 m/s
Natural Convection
3.0 m/s
2.5 m/s
2.0 m/s
1.5 m/s
1.0 m/s
0
20
40
60
80
100
0
2
4
6
8
10
12
Allowable Power Dissipation vs Ambient Temp for 1.8V
PKJ 4718B PIT
Ambient Temperature (C)
Power Dissipation (W)
0.5 m/s
0.2 m/s
Natural Convection
3.0 m/s
2.5 m/s
2.0 m/s
1.5 m/s
1.0 m/s
0
20
40
60
80
100
0
2
4
6
8
10
12
14
0.5 m/s
0.2 m/s
Natural Convection
3.0 m/s
2.5 m/s
2.0 m/s
1.5 m/s
1.0 m/s
Allowable Power Dissipation vs Ambient Temp for 2.5V
PKJ 4119B PIT
Ambient Temperature (C)
Power Dissipation (W)
0
20
40
60
80
100
0
2
4
6
8
10
12
14
16
Allowable Power Dissipation vs Ambient Temp for 3.3V
PKJ 4110B PIT
Ambient Temperature (C)
Power Dissipation (W)
0.5 m/s
0.2 m/s
Natural Convection
3.0 m/s
2.5 m/s
2.0 m/s
1.5 m/s
1.0 m/s
4
Data Sheet AE/LZT 108 4761 R1 Ericsson Inc., Microelectronics May 2001
Airflow Conversion Table
m/s
lfm
0.5
100
1.0
200
1.5
300
2.0
400
2.5
500
3.0
600
Note: Natural Convection average airflow speed can vary from 0.05 m/s to 0.2 m/s.
5
Data Sheet AE/LZT 108 4761 R1 Ericsson Inc., Microelectronics May 2001
0.0
0.0
0.5
0.5
1.0
1.0
1.5
1.5
2.0
2.0
2.5
2.5
3.0
3.0
0
0
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
Case to Ambient Thermal Resistance for 1.8V
PKJ 4718B PIT
Airflow (m/s)
R
th
(
C/W)
0
10
20
30
40
0
0
2
2
4
4
6
6
8
8
10
10
12
12
36V
53V
75V
Power Dissipation vs Output Current for 1.8V
PKJ 4718B PIT
Output Current (A)
Power Dissipation (W)
0
10
20
30
40
0
5
10
15
20
36V
53V
75V
Power Dissipation vs Output Current for 2.5V
PKJ 4119B PIT
Output Current (A)
Power Dissipation (W)
0
10
20
30
40
0
5
10
15
20
36V
53V
75V
Power Dissipation vs Output Current for 3.3V
PKJ 4110B PIT
Output Current (A)
Power Dissipation (W)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0
1
2
3
4
5
6
7
8
Case to Ambient Thermal Resistance for 2.5V and 3.3V
PKJ 4119B PIT and PKJ 4110B PIT
Airflow (m/s)
R
th
(
C/W)
Thermal Design
The thermal data can be used to determine thermal performance
without a heatsink.
Case temperature is calculated by the following formula:
T
C
= T
A
+ P
d
x R
thC-A
where P
d
= P
O
(1/
- 1)
Where:
T
C
: Case Temperature
T
A
: Local Ambient Temperature
P
d
: Dissipated Power
R
thC-A
: Thermal Resistance from T
C
to T
A
The efficiency
can be found in the tables on the following
pages.
For design margin and to enhance system reliability, it is
recommended that the PKJ 4000B series DC/DC power modules
be operated at case temperatures below 90C.
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