Key Features
Industry standard low profile Eighth-brick
57.9 x 36.8 x 8.5 mm (2.28 x 1.45 x 0.33 in)
Low profile, max 8.5 mm (0.33 in.)
High efficiency, typ. 91% at 3.3Vout half load
1500 Vdc input to output isolation
Meets equivalent to basic insulation safety requirements
according to IEC/EN/UL 60950-1
MTBF 4.2 Mh
General Characteristics
Narrow board pitch applicatio ns (15 mm/0.6 in)
Output over voltage protection
Input under voltage shutdown
Over temperature protection
Monotonic start-up
Output short-circuit protection
Remote sense
Remote control
Output voltage adjust function
Highly automated manufacturi ng ensures quality
ISO 9001/14001 certified supplier
Safety Approvals Design for Environment
E210157 Meets requirements in high-temperature
lead-free soldering processes.
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
Contents
Ordering Information ..............................................................2
General Information ..............................................................2
Safety Specification ..............................................................3
Absolute Maximum Ratings ..............................................................4
Electrical Specification
2.5V, 25A / 62.5W PKM 4619E PI......................................5
3.3V, 25A / 82.5W PKM 4810E PI......................................8
5.0V, 15A / 75W PKM 4711E PI....................................11
EMC Specification ............................................................14
Operating Information ............................................................15
Thermal Consideration ............................................................16
Connections ............................................................17
Mechanical Information ............................................................18
Soldering Information ............................................................21
Delivery Information ............................................................21
Product Qualification Specification ............................................................ 22
Ordering Information
Product program Output
PKM 4619E PI 2.5 V, 25 A / 62.5 W
PKM 4810E PI 3.3 V, 25 A / 82.5 W
PKM 4711E PI 5 V, 15 A / 75 W
Product number and Packagin g
PKM 4810E PI n1n2n3n4
Options n1 n2 n3 n4
Remote Control logic
Thread
Baseplate
Lead length
Options Description
n1
n2
n3
n4
P
M
HS
LA
Negative *
Positive
Thread *
No thread
Open frame *
Baseplate
5.30 mm *
3.69 mm (Open frame)
2.79 mm (Baseplate)
Example: a standard positive logic, baseplate product would be
PKM4810EPIPHS.
* Standard variant (i.e. no option selected).
General Information
Reliability
The failure rate () and mean time between failures
(MTBF= 1/) is calculated at max output power and an
operating ambient temperature (TA) of +40°C. Ericsson
Power Modules uses Telcordia SR-332 Issue 2 Method 1 to
calculate the mean steady-state failure rate and standard
deviation ().
Telcordia SR-332 Issue 2 also provides techniques to
estimate the upper confidence leve ls of failure rates based
on the mean and standard deviation.
Mean steady-state failure rate, Std. deviation,
240 nFailures/h 36.5 nFailures/h
MTBF (mean value) for the PKU 70w series = 4.2 Mh.
MTBF at 90% confidenc e level = 3.5 Mh
Compatibility with RoHS requirements
The products are compatible wit h the rel evant clauses and
requirements of the RoHS directive 2002/95/EC and have a
maximum concentration value of 0.1% b y weight in
homogeneous materials for lead, mercury, hexavalent
chromium, PBB and PBDE and of 0.01% by weight in
homogeneous materials for cadmi um.
Exemptions in the RoHS directive utilized in Ericsson
Power Modules products are found in the Statement of
Compliance document.
Ericsson Power Modules fulfills and will continuously fulfill
all its obligations under regulation (EC) No 1907/2006
concerning the registration, evaluation, authorization and
restriction of chemicals (REACH) as they enter into force
and is through product materials dec larations preparing for
the obligations to communicate information on substances
in the products.
Quality Statement
The products are designed and manufactured in an
industrial environment where quality systems and methods
like ISO 9000, Six Sigma, and SPC are inten sively in use to
boost the continuous improvements strateg y. Infant
mortality or early failures in the prod ucts 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 the products.
Warranty
Warranty period and conditions are defined in Ericsson
Power Modules General Terms and Conditi ons of Sale.
Limitation of Liability
Ericsson Power Modules does not make any other
warranties, expressed or impli ed including any warranty of
merchantability or fitness for a particular purp ose
(including, but not limited to, use in life support
applications, where malfunctions of product can cause
injury to a person’s healt h or li fe).
© Ericsson AB 2011
The information and specifications in this technical
specification is believed to be correct at the time of
publication. However, no liabil ity is accepted for
inaccuracies, printing errors or for any consequences
thereof. Ericsson AB reserves the right to change the
contents of this technical specification at any time without
prior notice.
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
2
Safety Specification
General information
Ericsson Power Modules DC/DC converters and DC/DC
regulators are designed in accordance with safety
standards IEC/EN/UL 60950-1 Safety of Information
Technology Equip m ent.
IEC/EN/UL 60950-1 contains requirements to prevent injury
or damage due to the following hazar ds:
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 acceptabilit y
apply for component po wer 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 compo nents complies with the
requirements of all applicable safety standards and
regulations for the final product.
Component power supplies for general use should comply
with the requirements in IEC 60950-1, EN 60950-1 and
UL 60950-1 Safety of Information Technology Equipment.
There are other more product related standards, e.g.
IEEE 802.3 CSMA/CD (Ethernet) Access Method, and
ETS-300132-2 Power supply interface at the input to
telecommunications equi pment, operated by direct current
(dc), but all of these standards are based on
IEC/EN/UL 60950-1 with regards to safety.
Ericsson Power Modules DC/DC converters and DC/DC
regulators are UL 60950-1 recognized and certified in
accordance with EN 60950-1.
The flammability rating for all construction parts of the
products meet requirements for V-0 class material
according to IEC 60695-11-10, Fire hazard testing, test
flames – 50 W horizontal and vertical flame test methods.
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 Doub le or
Reinforced Insulation from the primar y circuit (AC mains) in
accordance with IEC/EN/UL 60950-1.
Isolated DC/DC converters
It is recommended that a slow blow fuse is to 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 that imposes a
short circuit on the input source, this fuse will provide the
following functions:
Isolate the fault 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 verifi ed in an electric strength test.
The test voltage (Viso) between input and o utput is
1500 Vdc or 2250 Vdc (refer to product specification).
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 i s 75 Vdc or
less, then the output remains SELV (Safety Extra Low
Voltage) under normal and a bnormal operating conditions.
Single fault testing in the input power supply circuit should
be performed with the DC/DC converter connecte d 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 TNV-2 circuit and testing has
demonstrated compliance with SELV limits in accordance
with IEC/EN/UL60950-1.
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
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
3
Ericsson Internal
PRODUCT SPECIFICATION 1 (11)
Prepared (also subject responsible if other) No.
EQUENXU 2/1301-BMR 626 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-07-17 C
Absolute Maximum Ratings
Characteristics min typ max Unit
Tref Operating Temperature (see Thermal Consideration section) -40 +120 °C
TS Storage temperature -55 +125 °C
VI Input voltage -0.5 +80 V
Viso Isolation voltage (input to output test voltage) 1500 Vdc
Vtr Input voltage transient (Tp 100 ms) 100 V
Positive logic option 0 6 V
VRC Remote Control pin voltage
(see Operating Information section) Negative logic option 0 18 V
Vadj Adjust pin voltage (see Operating Information section) -0.5 2xVoi 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
Bias supply
and OTP Isolated
Feedback
Primary
Driver
+ In
RC
- In
+ Out
Secondary
Driver
Control and
Supervision
+ Sense
- Sense
- Out
Vadj
Primary Secondary
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
4
Ericsson Internal
PRODUCT SPECIFICATION 2 (11)
Prepared (also subject responsible if other) No.
EQUENXU 2/1301-BMR 626 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-07-17 C
2.5 V, 25 A / 62.5W Electrical Specification PKM 4619E PI
Tref = -40 to +90ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.
Typical values given at: Tref = +25°C, VI= 53 V, max IO , unless otherwise specified under Conditions.
Characteristics Conditions min typ max Unit
VI Input voltage range 36 75 V
VIoff Turn-off input voltage Decreasing input voltage 28 31 33 V
VIon Turn-on input voltage Increasing input voltage 32 34 36 V
CI Internal input capacitance 1 µF
PO Output power 0 62.5 W
SVR Supply voltage rejection (ac) f = 100 Hz sinewave, 1 Vp-p 70 dB
50 % of max IO 90
max IO 88
50 % of max IO , VI = 48 V 90
η Efficiency
max IO , VI = 48 V 88
%
Pd Power Dissipation max IO 8.6 12 W
Pli Input idling power IO = 0 A, VI = 53 V 1.3 W
PRC Input standby power VI = 53 V (turned off with RC) 0.1 W
fs Switching frequency 0-100 % of max IO 175 kHz
VOi Output voltage initial setting and
accuracy Tref = +25°C, VI = 53 V, IO = 25 A 2.45 2.50 2.55 V
Output adjust range See operating information 2.25 2.75 V
Output voltage tolerance band 10-100% of max IO 2.42 2.58 V
Idling voltage IO = 0 A 2.42 2.58 V
Line regulation max IO 0 10 mV
VO
Load regulation VI = 53 V, 1-100% of max IO 2 10 mV
Vtr Load transient
voltage deviation ±350 mV
ttr Load transient recovery time
VI = 53 V, Load step 25-75-25 % of
max IO, di/dt = 0.5 A/µs,
see Note 1 50 µs
tr Ramp-up time
(from 10−90 % of VOi) 6 10 ms
ts Start-up time
(from VI connection to 90% of VOi)
10-100% of max IO,
Tref = 25ºC, VI = 53 V 8 15 ms
max IO 0.1
ms
tf Vin shutdown fall time
(from VI off to 10% of VO) IO = 0 A 20 s
RC start-up time max IO 8 ms
max IO 0.1 ms
tRC RC shutdown fall time
(from RC off to 10% of VO) IO = 0 A 20 s
IO Output current 0 25 A
Ilim Current limit threshold VO = 2.4V, Tref < max Tref 26 29 34 A
Isc Short circuit current Tref = 25ºC, VO < 0.2V 34 38 A
VOac Output ripple & noise See ripple & noise section,
max IO, VOi 40 100 mVp-p
OVP Over voltage protection Tref = +25°C, VI = 53 V, 10-100% of
max IO 3.5 5.0 V
Note 1: Output filter according to Ripple & Noise section
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
5
Ericsson Internal
PRODUCT SPECIFICATION 3 (11)
Prepared (also subject responsible if other) No.
EQUENXU 2/1301-BMR 626 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-07-17 C
2.5 V, 25 A / 62.5W Typical Characteristics PKM 4619E PI
Efficiency Power Dissipation
70
75
80
85
90
95
0 5 10 15 20 25 [A]
[%]
36 V
48 V
53 V
75 V
0
2
4
6
8
10
0 5 10 15 20 25 [A]
[W]
36 V
48 V
53 V
75 V
Efficiency vs. load current and input voltage at Tref = +25°C Dissipated power vs. load current and input voltage at
Tref = +25°C
Output Current Derating Thermal Resistance
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
2
4
6
8
10
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.
Output Characteristics Current Limit Characteristics
2.48
2.49
2.50
2.51
2.52
0 5 10 15 20 25 [A]
[V]
36 V
48 V
53 V
75 V
0.00
0.50
1.00
1.50
2.00
2.50
3.00
0 5 10 15 20 25 30 35 [A]
[V]
36 V
48 V
53 V
75 V
Output voltage vs. load current at Tref = +25°C
Output voltage vs. load current at IO > max IO , Tref = +25°C
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
6
Ericsson Internal
PRODUCT SPECIFICATION 4 (11)
Prepared (also subject responsible if other) No.
EQUENXU 2/1301-BMR 626 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-07-17 C
2.5 V, 25 A / 62.5W Typical Characteristics PKM 4619E PI
Start-up Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 53 V,
IO = 25 A resistive load.
Top trace: output voltage (1 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: (2 ms/div.).
Shut-down enabled by disconnecting VI at:
Tref = +25°C, VI = 53 V,
IO = 25 A resistive load.
Top trace: output voltage (1 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: (0.1 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
Tref = +25°C, VI = 53 V,
IO = 25 A resistive load.
Trace: output voltage (20mV/div.).
Time scale: (5 µs/div.).
Output voltage response to load current step-
change (6.25-18.75-6.25 A) at:
Tref =+25°C, VI = 53 V.
Top trace: output voltage (200mV/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:
()()
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
∆
∆×+
−
∆×
∆+
×= %
%2100
%225.1
%1005.2
11.5Radj kΩ
Example: Increase 4% =>Vout = 2.6 Vdc
()()
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛×+
−
×
+
×4
42100
4225.1
41005.2
11.5 kΩ = 133 kΩ
Output Voltage Adjust Downwards, Decrease:
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛−
∆
×= 2
%
100
11.5Radj kΩ
Example: Decrease 2% =>Vout = 2.45 Vdc
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛−× 2
2
100
11.5 kΩ = 245 kΩ
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
7
Ericsson Internal
PRODUCT SPECIFICATION 5 (11)
Prepared (also subject responsible if other) No.
EQUENXU 2/1301-BMR 626 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-07-17 C
3.3 V, 25 A / 82.5W Electrical Specification PKM 4810E PI
Tref = -40 to +90ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.
Typical values given at: Tref = +25°C, VI= 53 V, max IO , unless otherwise specified under Conditions.
Characteristics Conditions min typ max Unit
VI Input voltage range 36 75 V
VIoff Turn-off input voltage Decreasing input voltage 28 31 33 V
VIon Turn-on input voltage Increasing input voltage 32 34 36 V
CI Internal input capacitance 1 µF
PO Output power 0 82.5 W
SVR Supply voltage rejection (ac) f = 100 Hz sinewave, 1 Vp-p 74 dB
50 % of max IO 92
max IO 90
50 % of max IO , VI = 48 V 92
η Efficiency
max IO , VI = 48 V 90
%
Pd Power Dissipation max IO 9.2 14 W
Pli Input idling power IO = 0 A, VI = 53 V 1.5 W
PRC Input standby power VI = 53 V (turned off with RC) 0.1 W
fs Switching frequency 0-100 % of max IO 200 kHz
VOi Output voltage initial setting and
accuracy Tref = +25°C, VI = 53 V, IO = 25 A 3.23 3.3 3.37 V
Output adjust range See operating info and Note 2 2.97 3.63 V
Output voltage tolerance band 10-100% of max IO 3.2 3.4 V
Idling voltage IO = 0 A 3.2 3.4 V
Line regulation max IO 4 10 mV
VO
Load regulation VI = 53 V, 1-100% of max IO 1 10 mV
Vtr Load transient
voltage deviation ±400 mV
ttr Load transient recovery time
VI = 53 V, Load step 25-75-25 % of
max IO, di/dt = 1 A/µs,
see Note 1 50 µs
tr Ramp-up time
(from 10−90 % of VOi) 5.8 10 ms
ts Start-up time
(from VI connection to 90% of VOi)
10-100% of max IO,
Tref = 25ºC, VI = 53 V 7.9 15 ms
max IO 0.2
ms
tf Vin shutdown fall time
(from VI off to 10% of VO) IO = 0 A 25 s
RC start-up time max IO 7.7 ms
max IO 0.2 ms
tRC RC shutdown fall time
(from RC off to 10% of VO) IO = 0 A 25 s
IO Output current 0 25 A
Ilim Current limit threshold VO = 3.2V, Tref < max Tref 26 30 36 A
Isc Short circuit current Tref = 25ºC, VO < 0.2V 33 38 A
VOac Output ripple & noise See ripple & noise section,
max IO, VOi 40 100 mVp-p
OVP Over voltage protection Tref = +25°C, VI = 53 V, 10-100% of
max IO 3.9 6.0 V
Note 1: Output filter according to Ripple & Noise section
Note 2: Output current is limited to 15A to obtain V0 = 3.63V at VI = 36V.
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
8
Ericsson Internal
PRODUCT SPECIFICATION 6 (11)
Prepared (also subject responsible if other) No.
EQUENXU 2/1301-BMR 626 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-07-17 C
3.3 V, 25 A /82.5W Typical Characteristics PKM 4810E PI
Efficiency Power Dissipation
70
75
80
85
90
95
0
5
1
0
1
5
2
0
2
5
[
A
]
[%]
36 V
48 V
53 V
75 V
0
2
4
6
8
10
0 5 10 15 20 25 [A]
[W]
36 V
48 V
53 V
75 V
Efficiency vs. load current and input voltage at Tref = +25°C
Dissipated power vs. load current and input voltage at
Tref = +25°C
Output Current Derating Thermal Resistance
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
2
4
6
8
10
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.
Output Characteristics
Current Limit Characteristics
3.28
3.29
3.30
3.31
3.32
0 5 10 15 20 25 [A]
[V]
36 V
48 V
53 V
75 V
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
0 5 10 15 20 25 30 35 [A]
[V]
36 V
48 V
53 V
75 V
Output voltage vs. load current at Tref = +25°C
Output voltage vs. load current at IO > max IO , Tref = +25°C
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
9
Ericsson Internal
PRODUCT SPECIFICATION 7 (11)
Prepared (also subject responsible if other) No.
EQUENXU 2/1301-BMR 626 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-07-17 C
3.3 V, 25 A /82.5W Typical Characteristics PKM 4810E PI
Start-up Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 53 V,
IO = 25 A resistive load.
Top trace: output voltage (1 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: (2 ms/div.).
Shut-down enabled by disconnecting VI at:
Tref = +25°C, VI = 53 V,
IO = 25 A resistive load.
Top trace: output voltage (1 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: (0.2 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
Tref = +25°C, VI = 53 V,
IO = 25 A resistive load.
Trace: output voltage (20mV/div.).
Time scale: (5 µs/div.).
Output voltage response to load current step-
change (6.25-18.75-6.25 A) at:
Tref =+25°C, VI = 53 V.
Top trace: output voltage (200mV/div.).
Bottom trace: load current (10 A/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:
()()
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
∆
∆×+
−
∆×
∆+
×= %
%2100
%225.1
%10030.3
11.5Radj kΩ
Example: Increase 4% =>Vout = 3.432 Vdc
()()
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛×+
−
×
+
×4
42100
4225.1
410030.3
11.5 kΩ = 220 kΩ
Output Voltage Adjust Downwards, Decrease:
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛−
∆
×= 2
%
100
11.5Radj kΩ
Example: Decrease 2% =>Vout = 3.234 Vdc
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛−× 2
2
100
11.5 kΩ = 245 kΩ
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
10
Ericsson Internal
PRODUCT SPECIFICATION 8 (11)
Prepared (also subject responsible if other) No.
EQUENXU 2/1301-BMR 626 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-07-17 C
5.0V, 15 A / 75W Electrical Specification PKM 4711E PI
Tref = -40 to +90ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.
Typical values given at: Tref = +25°C, VI= 53 V, max IO , unless otherwise specified under Conditions.
Characteristics Conditions min typ max Unit
VI Input voltage range 36 75 V
VIoff Turn-off input voltage Decreasing input voltage 28 31 33 V
VIon Turn-on input voltage Increasing input voltage 32 34 36 V
CI Internal input capacitance 1 µF
PO Output power Output voltage initial setting 0 75 W
50 % of max IO 91
max IO 90
50 % of max IO, VI = 48 V 91
η Efficiency
max IO, VI = 48 V 90
%
Pd Power Dissipation max IO 8.2 12 W
Pli Input idling power IO = 0 A, VI = 53 V 1.6 W
PRC Input standby power VI = 53 V (turned off with RC) 0.1 W
fs Switching frequency 0-100 % of max IO 200 kHz
VOi Output voltage initial setting and
accuracy Tref = +25°C, VI = 53 V, IO =15 A 4.9 5.0 5.1 V
Output adjust range See operating information and Note
1 4.5 5.5 V
Output voltage tolerance band 10-100 % of max IO 4.85 5.15 V
Idling voltage IO = 0 A 4.85 5.15 V
Line regulation max IO 2 10 mV
VO
Load regulation VI = 53 V, 0-100 % of max IO 2 10 mV
Vtr Load transient
voltage deviation ±400 mV
ttr Load transient recovery time
VI = 53 V, Load step 25-75-25 % of
max IO, di/dt = 1 A/µs 50 µs
tr Ramp-up time
(from 10−90 % of VOi) 6 10 ms
ts Start-up time
(from VI connection to 90 % of VOi)
10-100 % of max IO
Tref = +25°C, VI = 53 V 8 15 ms
max IO 0.3
ms
tf VI shut-down fall time
(from VI off to 10 % of VO) IO = 0 A 15 s
RC start-up time max IO 6 ms
max IO 0.3 ms
tRC RC shut-down fall time
(from RC off to 10 % of VO) IO = 0 A 15 s
IO Output current 0 15 A
Ilim Current limit threshold Tref < max Tref, VO=4.9V 16 19 23 A
Isc Short circuit current Tref = 25ºC, VO<0.5V 22 26 A
VOac Output ripple & noise See ripple & noise section,
max IO, VOi 40 100 mVp-p
OVP Over voltage protection Tref = +25°C, VI = 53 V, 10-100 % of
max IO 6.5 10 V
Note 1: Output current is limited to 12A to obtain VO=5.5V at VI = 36V
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
11
Ericsson Internal
PRODUCT SPECIFICATION 9 (11)
Prepared (also subject responsible if other) No.
EQUENXU 2/1301-BMR 626 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-07-17 C
5.0V, 15A / 75W Typical Characteristics PKM 4711E PI
Efficiency Power Dissipation
70
75
80
85
90
95
03691215[A]
[%]
36 V
48 V
53 V
75 V
0
2
4
6
8
10
03691215[A]
[W]
36 V
48 V
53 V
75 V
Efficiency vs. load current and input voltage at Tref = +25°C Dissipated power vs. load current and input voltage at
Tref = +25°C
Output Current Derating Thermal Resistance
0
3
6
9
12
15
18
0 20 40 60 80 100 [°C]
[A]
3.0 m/s
2.5 m/s
2.0 m/s
1.5 m/s
1.0 m/s
0.5 m/s
Nat. Conv.
0
2
4
6
8
10
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.
Output Characteristics Current Limit Characteristics
4.85
4.90
4.95
5.00
5.05
5.10
0 3 6 9 12 15 [A]
[V]
36 V
48 V
53 V
75 V
0.00
1.00
2.00
3.00
4.00
5.00
6.00
8 1114172023[A]
[V]
36 V
48 V
53 V
75 V
Output voltage vs. load current at Tref = +25°C
Output voltage vs. load current at IO > max IO , Tref = +25°C
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
12
Ericsson Internal
PRODUCT SPECIFICATION 10 (11)
Prepared (also subject responsible if other) No.
EQUENXU 2/1301-BMR 626 Uen
Approved Checked Date Rev Reference
SEC/D (Julia You) EZYPING 2007-07-17 C
5.0V, 15 A / 75W Typical Characteristics PKM 4711E PI
Start-up Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 53 V,
IO = 15 A resistive load.
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: (2 ms/div.).
Shut-down enabled by disconnecting VI at:
Tref = +25°C, VI = 53 V,
IO = 15 A resistive load.
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: (2 ms/div.).
Output Ripple & Noise Output Load Transient Response
Output voltage ripple at:
Tref = +25°C, VI = 53 V,
IO = 15 A resistive load.
Trace: output voltage (20 mV/div.).
Time scale: (2 µs/div.).
Output voltage response to load current step-
change (3.75-11.25-3.75 A) at:
Tref =+25°C, VI = 53 V.
Top trace: output voltage (200 mV/div.).
Bottom trace: load current (5 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:
()()
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
∆
∆×+
−
∆×
∆+
×= %
%2100
%225.1
%1005
11.5Radj kΩ
Example: Increase 4% =>Vout = 5.2 Vdc
()()
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛×+
−
×
+
×4
42100
4225.1
41005
11.5 kΩ = 404 kΩ
Output Voltage Adjust Downwards, Decrease:
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛−
∆
×= 2
%
100
11.5Radj kΩ
Example: Decrease 2% =>Vout = 4.9 Vdc
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛−× 2
2
100
11.5 kΩ = 245 kΩ
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
13
Ericsson Internal
PRODUCT SPECIFICATION 1 (5)
Prepared (also subject responsible if other) No.
EANDKUL 3/1301-BMR 626 Uen
Approved Checked Date Rev Reference
MPM/BK/P (Margaretha Anderzen) (MICHEBO) 2006-11-14 B
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
200 kHz for PKM 4810E PI @ VI = 53 V, max IO.
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 = 0.68uF
C2, C3 = 1.0uF
C4, C5 = 2.2nF
C6, C7 = 100uF
L1, L2 = 0.77uH
EMI with filter
Test set-up
Layout recommendation
The radiated EMI performance of the DC/DC converter will
depend on the PCB layout and ground layer design.
It is also important to consider the stand-off of the DC/DC
converter.
If a ground layer is used, it should be connected to the output
of the DC/DC converter 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
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
14
Ericsson Internal
PRODUCT SPECIFICATION 2 (5)
Prepared (also subject responsible if other) No.
EANDKUL 3/1301-BMR 626 Uen
Approved Checked Date Rev Reference
MPM/BK/P (Margaretha Anderzen) (MICHEBO) 2006-11-14 B
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 Tref must be limited to
absolute max +90°C. The absolute maximum continuous
input voltage is 80 Vdc.
Turn-off Input Voltage
The DC/DC converters 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 2V.
Remote Control (RC)
The products are fitted with a
remote control function referenced
to the primary negative input
connection (- In), with negative and
positive logic options available.
The RC function allows the
converter to be turned on/off by an
external device like a
semiconductor or mechanical
switch. When the RC pin is left
open, the voltage generated on the
RC pin is 7-8 V.
The standard converter is provided with “negative logic”
remote control and will be off until the RC pin is connected to
the minus input. To turn on the converter the voltage between
RC pin and minus input should be less than 1V. To turn off
the converter the RC pin should be left open, or connected to
a voltage higher than 4V referenced to minus input. In
situations where it is desired to have the converter power up
automatically without the need for control signals or a switch,
the RC pin can be wired directly to the —Input circuit on the
application board.
The second option is “positive logic” remote control, which
can be ordered by adding the suffix “P” to the end of the part
number. The converter will turn on when the input voltage is
applied with the RC pin open. Turn off is achieved by
connecting the RC pin to the - In. To ensure safe turn off the
voltage difference between RC pin and the - In pin shall be
less than 1V. The converter will restart automatically when
this connection is opened.
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. Ceramic
capacitors will also reduce any high frequency noise at the
load.
It is equally important to use low resistance and low
inductance PCB layouts and cabling.
External decoupling capacitors will become part of the
control loop of the DC/DC converter and may affect the
stability margins. As a “rule of thumb”, 100 µF/A of output
current can be added without any additional analysis. The
ESR of the capacitors is a very important parameter. Power
Modules guarantee stable operation 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 (Vadj)
The DC/DC converters have an Output Voltage Adjust pin
(Vadj). 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 converter from shutting down. At increased
output voltages the maximum power rating of the converter
remains the same, and the max output current must be
decreased correspondingly.
To increase the voltage the resistor should be connected
between the Vadj 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 Vadj pin and —Sense pin.
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
15
Ericsson Internal
PRODUCT SPECIFICATION 3 (5)
Prepared (also subject responsible if other) No.
EANDKUL 3/1301-BMR 626 Uen
Approved Checked Date Rev Reference
MPM/BK/P (Margaretha Anderzen) (MICHEBO) 2006-11-14 B
Operating information continued
Parallel Operation
Two converters may be paralleled for redundancy if external
o-ring diodes are used in series with the output. It is not
recommended to parallel the converters without using
external current sharing circuits.
Remote Sense
The DC/DC converters have remote sense that can be used
to compensate for moderate amounts of resistance in the
distribution system and allow for voltage regulation at the
load or other selected point. The remote sense lines will carry
very little current and do not need a large cross sectional
area. However, the sense lines on PCB should be located
close to a ground trace or ground plane. In a discrete wiring
situation, the use of twisted pair wires or other technique to
reduce noise susceptibility is highly recommended. The
remote sense circuitry will compensate for up to 10% voltage
drop between the sense volta
g
e and the volta
g
e at the output
pins. The output voltage and the remote sense voltage offset
must be less than the minimum over voltage trip point. If the
remote sense is not needed the —Sense should be connected
to —Out and +Sense should be connected to +Out.
Over Temperature Protection (OTP)
The converters are protected from thermal overload by an
internal over temperature shutdown circuit. When the PCB
temperature close to the PWM control circuit exceeds 130ºC
the converter will shut down immediately. The converter will
restart when the temperature drops below 120ºC.
Over Voltage Protection (OVP)
The converters have output over voltage protection that will
shut down the converter in over voltage conditions. The
converter will make continuous attempts to start up (non-
latching mode) and resume normal operation automatically
after removal of the over voltage condition.
Over Current Protection (OCP)
The converters include current limiting circuitry for protection
at continuous overload.
The output voltage will decrease towards zero for output
currents in excess of max output current (max IO). The
converter will resume normal operation after removal of the
overload. The load distribution should be designed for the
maximum output short circuit current specified.
Input and Output Impedance
The impedance of both the input source and the load will
interact with the impedance of the DC/DC converter. It is
important that the input source has low characteristic
impedance. The converters 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 100 µF capacitor
across the input of the converter will ensure stable operation.
The capacitor is not required when powering the DC/DC
converter from an input source with an inductance below
10 µH.
Thermal Consideration
General
The converters are designed to operate in different thermal
environments and sufficient cooling must be provided to
ensure reliable operation.
Cooling is achieved mainly by conduction, from the pins to
the host board, and convection, which is dependant on the
airflow across the converter. Increased airflow enhances the
cooling of the converter.
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 Vin = 53 V.
The DC/DC converter 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 305 x 305 mm.
Proper cooling of the DC/DC converter can be verified by
measuring the temperature at positions P1. The temperature
at this position should not exceed the max values provided in
the table below.
Note that the max value is the absolute maximum rating
(non destruction) and that the electrical Output data is
guaranteed up to Tref +90°C.
See Design Note 019 for further information.
Position Device Designation max value
P1 Mosfet
Tref 120º C
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
16
Ericsson Internal
PRODUCT SPECIFICATION 4 (5)
Prepared (also subject responsible if other) No.
EANDKUL 3/1301-BMR 626 Uen
Approved Checked Date Rev Reference
MPM/BK/P (Margaretha Anderzen) (MICHEBO) 2006-11-14 B
Thermal Consideration continued
The PKM4000E series DC/DC converters can be ordered with
a heatsink (HS) option. The heatsink option have
approximately 5 °C improved derating compared with the
PKM4000E without heatsink. The HS option is intended to be
mounted on a cold wall or heatsink to transfer heat awa
y
from
the converter and further improve the cooling of the converter.
Definition of reference temperature (Tref)
The reference temperature is used to monitor the temperature
limits of the product. Temperatures above maximum Tref are
not allowed and may cause degradation or permanent
damage to the product. Tref is also used to define the
temperature range for normal operating conditions.
Tref is defined by the design and used to guarantee safety
margins, proper operation and high reliability of the module.
Ambient Temperature Calculation
By using the thermal resistance the maximum allowed
ambient temperature can be calculated.
1. The power loss is calculated by using the formula
((1/η) - 1) × output power = power losses (Pd).
η = efficiency of converter. E.g 90 % = 0.90
2. Find the thermal resistance (Rth) in the Thermal Resistance
graph found in the Output section for each model.
Calculate the temperature increase (∆T).
∆T = Rth x Pd
3. Max allowed ambient temperature is:
Max Tref - ∆T.
E.g PKM 4810E PI at 1m/s:
1. (( ) - 1) × 82.5 W = 9.17 W
2. 9.17 W × 4.7°C/W = 43.1°C
3. 120 °C — 43.1°C = max ambient temperature is 76.9°C
The actual temperature will be dependent on several factors
such as the PCB size, number of layers and direction of
airflow.
Connections
Pin Designation Function
1 +In Positive input
2 RC Remote Control
3 -In Negative input
4 - Out Negative output
5 - Sense Negative sense
6 Vadj Output voltage adjust
7 + Sense Positive sense
8 + Out Positive output
1
0.90
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
17
Mechanical Information- Open Frame Version
All component placements – whether shown as physical components or symbolical outline – are for reference only and are subject to change throughout the product’s life cycle,
unless explicitly described and dimensioned in this drawing.
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
18
Mechanical Information- Base Plate Version
All component placements – whether shown as physical components or symbolical outline – are for reference only and are subject to change throughout the product’s life cycle,
unless explicitly described and dimensioned in this drawing.
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
19
Mechanical Information – Base plate version with non-threaded inserts
All component placements – whether shown as physical components or symbolical outline – are for reference only and are subject to change throughout the product’s life cycle,
unless explicitly described and dimensioned in this drawing.
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
20
Ericsson Internal
PRODUCT SPECIFICATION 1 (3)
Prepared (also subject responsible if other) No.
MICUPEZ 5/1301-BMR 626 Uen
Approved Checked Date Rev Reference
(BK/P) M. Anderzen 2006-06-20 A
Soldering Information — Through hole mounting
The product is intended for through hole mounting in a PCB.
When wave soldering is used, the temperature on the pins is
specified to maximum 260 °C for maximum 10 seconds.
Maximum preheat rate of 4 °C/s and temperature of max
150 °C is suggested. When hands soldering 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 (NC) flux is recommended to avoid entrapment of
cleaning fluids in cavities inside of the DC/DC power module.
The residues may affect long time reliability and isolation
voltage.
Delivery package information
The products are delivered in antistatic trays.
Tray specifications
Material Polyethylene foam, dissipative
Surface resistance 105 < Ω/square < 1012
Bake ability The trays are not bakeable
Tray capacity 20 products/tray
Tray height 25.4 mm [1.0 inch]
Box capacity 60 products (3 full trays/box)
Tray weight
80 g empty,
960 g full (Base plated products)
560 g full (Open frame products)
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
21
Ericsson Internal
PRODUCT SPECIFICATION 2 (3)
Prepared (also subject responsible if other) No.
MICUPEZ 5/1301-BMR 626 Uen
Approved Checked Date Rev Reference
(BK/P) M. Anderzen 2006-06-20 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
Isopropanol
+55 ±5 °C
+35 ±5 °C
+35 ±5 °C
Mechanical shock IEC 60068-2-27 Ea Peak acceleration
Duration
Pulse shape
Directions
Number of pulses
100 g
6 ms
Half sine
6
18 (3 + 3 in each perpendicular direction)
Moisture reflow sensitivity J-STD-020C Level 1 (SnPb-eutectic)
Level 3 (Pb Free)
225 +0 -5 °C
260 +0 -45 °C
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 All leads
Solderability IEC 60068-2-20 Test Ta
Preconditioning
Temperature, SnPb Eutectic
Temperature, Pb-free
Steam ageing for 1 h
235 °C
260 °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 3 perpendicular directions
E
PKM 000( PI series Direct Converters
Input 36-75 V, Output up to 25 A / 82.5 W
EN/LZT 146 358 R3B May 2012
© Ericsson Power Modules AB
Technical Specification
22
