PKM 4000 PI
15-20A DC/DC Power Modules
48V Input, (1.5V-1.8V-2.5V-3.3V-5V) Outputs
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High efficiency 92% Typ (5V) at full load
Fast dynamic response, 100µs,
+ 150 mVpeak Typ
-
Low output ripple, 60 mVp-p Typ
High power density, 44 W/in
3
(5.0V)
Wide input voltage range (36-75V)
Industry standard footprint & pin-out
1,500Vdc isolation voltage
Max case temperature +100ºC
UL 1950/UL
c
1950 Recognized
TUV to EN60 950 Type Approved
The PKM 4000 series represents a “third generation” of High
Density DC/DC Power Modules in an industry standard quarter-
brick package with unparalleled power densities and efficiencies.
These breakthrough performance features have been achieved by
using the most advanced patented topology, utilizing integrated
magnetics and synchronous rectification on a low resistivity
multilayer PCB. The product features fast dynamic response
times and low output ripple, which are important parameters
when supplying low voltage logics. The PKM 4000 series is
especially suited for limited board space and high dynamic load
applications such as demanding microprocessors.
Ericsson’s PKM 4000 Power Modules address the converging
“New Telecoms” market by specifying the input voltage range
in accordance with ETSI specifications. The PKM 4000 series
also offers over-voltage protection, under-voltage protection,
over-temperature protection, soft-start, and is short circuit proof.
These products are manufactured using highly automated
manufacturing lines with a world-class quality commitment
and a 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.
General
Absolute Maximum Ratings
Characteristics
T
C
T
S
V
I
Maximum Operating Case Temperature
Storage temperature
Input voltage
min
-40
-40
-0.5
1,500
12
1
max
+100
+125
+80
Unit
°C
°C
Vdc
Vdc
Vdc
A
2
s
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 PKM 4000 series DC/DC power
modules are operated at case temperatures below 90°C.
V
ISO
Isolation voltage
(input to output test voltage)
V
RC
Remote control voltage
I
2
t
Inrush transient
Input
T
C
< T
Cmax
Characteristics
V
I
V
Ioff
V
Ion
C
I
I
Iac
Input voltage
range
Turn-off input
voltage
Turn-on input
voltage
Input capacitance
Reflected
ripple current
Maximum input
current
5 Hz to 20 MHz
Ramping from
higher voltage
Ramping from
lower voltage
Conditions
min
36
31
33
34
1.5
10
36
typ max
75
Unit
Vdc
Vdc
Vdc
µF
mA p-p
Safety
The PKM
4000
Series DC/DC power modules are
designed in accordance with EN 60 950, Safety of
Information Technology Equipment Including
Electrical Business Equipment and are TUV Type
Approved.
The PKM
4000
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.
I
Imax
V
I
= V
I
min
75 W
100 W
1.8
2.3
A
P
Ii
P
RC
Input idling power
Input
stand-by power
(turned off with RC)
V
I
= 50V
I
O
= 0
RC open
2.6
0.4
4.6
0.6
W
W
VTRIM Maximum input
voltage on trim pin
6
Vdc
Environmental Characteristics
Characteristics
Random
Vibration
Test procedure & conditions
IEC 68-2-34F
c
Frequency
Spectral density
Duration
10...500 Hz
0.025 g2/Hz
10 min in each
direction
10-500 Hz
0.75mm
10g
10 in each axis
100 g
3ms
-40°C...+100°C
300
85°C
85% RH
1000 hours
260° C
10...13 s
Sinusoidal
Vibration
IEC 68-2-6 F
c
Frequency
Amplitude
Acceleration
Number of cycles
Peak acceleration
Duration
Temperature
Number of cycles
Temperature
Humidity
Duration
Temperature, solder
Duration
Shock
(half sinus)
Temperature
change
Accelerated
damp heat
IEC 68-2-27 E
a
IEC 68-2-14 N
a
IEC 68-2-3 C
a
with bias
Solder
resistibility
IEC 68-2-20 T
b
method IA
2
Data Sheet AE/LZT 108 4913 R2 © Ericsson Inc., Microelectronics, May 2001
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 or 60 sec.
Leakage current is less than 1
µA
@ 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 PKM
4000
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 10A or less. It is
recommended to use a fuse with the lowest current rating, that is
suitable for the application.
Mechanical Data
Connections
Weight
Designation
-IN
ON/OFF
+IN
-OUT
-SEN
Trim
+SEN
+OUT
Function
Negative input
Remote control (primary). To turn-on
and turn-off the output
Positive input
Negative output
Negative remote sense
Output voltage adjust
Positive remote sense
Positive output
Pin # (for ref.)
1
2
3
4
5
6
7
8
55 grams
Case
Aluminum baseplate with metal standoffs.
Pins
Pin material: Brass
Pin plating: Tin/Lead over Nickel.
Data Sheet AE/LZT 108 4913 R2 © Ericsson Inc., Microelectronics, May 2001
3
Thermal Data
The PKM 4000 series DC/DC power modules has a robust thermal
design which allows operation at case (baseplate) temperatures (T
C
)
up to +100°C. The main cooling mechanism is convection (free or
forced) through the case or optional heatsinks.
The graphs below show the allowable maximum output current to
maintain a maximum +100°C 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.
Airflow Conversion Table
m/s
0.5
1.0
1.5
2.0
2.5
3.0
lfm
100
200
300
400
500
600
Note: Natural Convection average airflow speed can vary from 0.05 m/s to 0.2 m/s.
Output Current Derating (No Heatsink) for 1.5V/20A
PKM4318PIOA
20
3.0 m/s
2.5 m/s
Output Current Derating (No Heatsink) for 1.8V/15A
PKM4218PI
15
15
2.0 m/s
1.5 m/s
10
3.0 m/s
2.5 m/s
2.0 m/s
1.5 m/s
1.0 m/s
0.5 m/s
0.2 m/s
Natural Convection
10
1.0 m/s
0.5 m/s
5
5
0.2 m/s
Natural Convection
0
0
10
20
30
40
50
60
70
80
90
100
0
0
10
20
30
40
50
60
70
80
90
100
Output Current Derating (No Heatsink) for 1.5V/15A
PKM4218PIOA
20
Output Current Derating (No Heatsink) for 2.5V/20A
PKM4519PI
15
3.0 m/s
2.5 m/s
3.0 m/s
2.5 m/s
15
10
2.0 m/s
2.0 m/s
1.5 m/s
1.0 m/s
10
1.5 m/s
1.0 m/s
0.5 m/s
5
0.5 m/s
0.2 m/s
Natural Convection
5
0.2 m/s
Natural Convection
0
0
10
20
30
40
50
60
70
80
90
100
0
0
10
20
30
40
50
60
70
80
90
100
Output Current Derating (No Heatsink) for 1.8V/20A
PKM4318PI
20
3.0 m/s
2.5 m/s
Output Current Derating (No Heatsink) for 2.5V/15A
PKM4319PI
15
15
2.0 m/s
10
1.5 m/s
3.0 m/s
2.5 m/s
2.0 m/s
1.5 m/s
1.0 m/s
0.5 m/s
0.2 m/s
Natural Convection
10
1.0 m/s
0.5 m/s
5
5
0.2 m/s
Natural Convection
0
0
10
20
30
40
50
60
70
80
90
100
0
0
10
20
30
40
50
60
70
80
90
100
4
Data Sheet AE/LZT 108 4913 R2 © Ericsson Inc., Microelectronics, May 2001
Output Current Derating (No heatsink) for 3.3V
PKM 4610PI and PKM 4510PI
20
3.0 m/s
2.5 m/s
2.0 m/s
Output Current Derating (No Heatsink) for 5V
PKM4111PI and PKM4711PI
20
15
15
3.0 m/s
2.5 m/s
2.0 m/s
1.5 m/s
10
5
1.5 m/s
1.0 m/s
0.5 m/s
0.2 m/s
Natural Convection
10
1.0 m/s
0.5 m/s
0.2 m/s
Natural Convection
5
0
0
10
20
30
40
50
60
70
80
90
100
0
0
10
20
30
40
50
60
70
80
90
100
Thermal Data
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.
Allowable Power Dissipation vs. Ambient Temp for 2.5V
PKM4519PI and PKM4319PI
9
8
7
6
5
4
3
2
1
0
0
10
20
30
40
50
60
70
80
90
100
1.0 m/s
0.5 m/s
0.2 m/s
Natural Convection
All Bending Points
are at 6W
3.0 m/s
2.5 m/s
2.0 m/s
1.5 m/s
Allowable Power Dissipation vs. Ambient Temp for 1.5V
PKM4318PIOA and PKM4218PIOA
12
Allowable Power Dissipation vs. Ambient Temp for 3.3V
PKM 4610PI and PKM 4510PI
6
5
4
3
2
1
0
0
2.0 m/s
1.5 m/s
3.0 m/s
2.5 m/s
3.0 m/s
10
8
1.5 m/s
2.5 m/s
2.0 m/s
1.0 m/s
0.5 m/s
0.2 m/s
Natural Convection
6
1.0 m/s
4
0.5 m/s
2
0
0
0.2 m/s
Natural Convection
10
20
30
40
50
60
70
80
90
100
10
20
30
40
50
60
70
80
90
100
Allowable Power Dissipation vs. Ambient Temp for 1.8V
PKM4318PI and PKM4218PI
16
7
6
5
4
3
2
1
0
0
10
20
30
40
50
60
70
80
90
100
2.0 m/s
1.5 m/s
1.0 m/s
0.5 m/s
0.2 m/s
Natural Convection
All Bending Points
are at 5.5W
Allowable Power Dissipation vs. Ambient Temp for 5V
PKM4111PI and PKM4711PI
3.0 m/s
2.5 m/s
14
12
10
8
6
4
2
0
0
10
20
30
40
50
60
70
1.0 m/s
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
80
90
100
Note: For conversion from m/s to lfm please see conversion table on pg. 4.
Data Sheet AE/LZT 108 4913 R2 © Ericsson Inc., Microelectronics, May 2001
5
