PKM4110CPINBLASP [ERICSSON]
DC-DC Regulated Power Supply Module, 1 Output, 165W, Hybrid, ROHS COMPLIANT;
| 型号： | PKM4110CPINBLASP |
| 厂家： | 
ERICSSON |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, 165W, Hybrid, ROHS COMPLIANT 输入元件 |
| 文件： | 总30页 (文件大小：596K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PKM 4000C Series
36-75 Vdc DC/DC converter
Output up to 80 A/200 W
Contents
Product Program. . . . . . . . . . . . . . . . . . . . . . 2
Mechanical Information. . . . . . . . . . . . . . . . . 3
Absolute Maximum Ratings . . . . . . . . . . . . . 4
Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Product Qualification Specification. . . . . . . . 5
Safety Specification . . . . . . . . . . . . . . . . . . . 6
PKM 4918LC PINB - 1.2 V Data . . . . . . . . . . 7
PKM 4118HC PINB - 1.5 V Data. . . . . . . . . 10
PKM 4118GC PINB - 1.8 V Data. . . . . . . . . 13
PKM 4119C PINB - 2.5 V Data . . . . . . . . . . 16
PKM 4110C PINB - 3.3 V Data . . . . . . . . . . 19
PKM 4211C PINB - 5 V Data . . . . . . . . . . . 22
EMC Specification. . . . . . . . . . . . . . . . . . . . 25
Operating Information . . . . . . . . . . . . . . . . . 26
Thermal Consideration . . . . . . . . . . . . . . . . 28
Soldering Information . . . . . . . . . . . . . . . . . 29
Delivery Package Information . . . . . . . . . . . 29
Design for Environment (DfE) . . . . . . . . . . . 29
Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Quality Statement . . . . . . . . . . . . . . . . . . . . 29
Limitation of Liability . . . . . . . . . . . . . . . . . . 29
Sales Offices and Contact Information . . . . 30
Safety Approvals
Key Features
• Industry standard quarterbrick and optional double Pin-Out
57.93 x 36.80 x 9.1 mm (2.278 x 1.449 x 0.35 In.)
• RoHS compliant
• High efficiency, typ. 92 % at 3.3 Vout half load
• 2250 Vdc input to output isolation, meets isolation
requirements equivalent to basic insulation according
to IEC/EN/UL 60950
• More than 2.7 million hours predicted MTBF at +40 ºC
ambient temperature
The PKM 4000C 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.
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.
The PKM 4000C series features a "double-p" footprint
with dual output pins which reduces soldering losses to
the board while increasing the cooling of the module.
The PKM 4000C series uses patented synchronous
rectification technology and achieves an efficiency up to
90% at full load.
Ericsson Power Modules is an ISO 9001/14001 certified
supplier.
Datasheet
E
Product Program
VO/IO max
Output 1
VI
P
O max
Ordering No.
Comment
1.2 V/80 A
96 W
PKM 4918LC PINB
PKM 4118HC PNB
PKM 4118GC PINB
PKM 4119C PINB
PKM 4110C PINB
PKM 4211C PINB
PKM 4213C PINB
Example
1.5 V/80 A
1.8 V/71 A
2.5 V/55 A
3.3 V/50 A
5.0 V/40 A
12 V/17 A
120 W
126 W
137.5 W
165 W
200 W
204 W
48/60
Preliminary product code
Option
Suffix
Positive Remote Control logic
Lead length 3.69 mm (0.145 in)
Single pin-out*
P
PKM 4110C PIPNB
PKM 4110C PINBLA
PKM 4110C PINBSP
LA
SP
Note: As an example a positive logic and short pin product would be PKM 4110C PINBLA.
*A single pin option is available but will decrease the maximum available output current.
Ericsson power modules do not recommend that each pin should conduct more than 40A due
to power dissipation inside the pin and the board.
To use more current than stated will have impact on solder joints and current distribution to
the board, the power module will however be safe but will have more power dissipation due to
less conductive material to the board.
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
2
Mechanical Information
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
3
Absolute Maximum Ratings
Characteristics
min
-40
typ
max
+125
+125
+100
2250
100
Unit
˚C
T
Maximum Operating Tpcb Temperature (see thermal consideration section)
Storage temperature
pcb
S
T
-55
˚C
V
V
V
Input voltage
-0.5
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
I
Isolation voltage (input to output test voltage)
Input voltage transient (Tp 100 ms)
Negative logic (referenced to -In)
Positive logic (referenced to -In)
Maximum input
ISO
tr
15
V
V
RC
adj
-0.5
-0.5
15
2xVoi
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.
T
Pcb
<T
Pcb max
unless otherwise specified
Input
Characteristics
Conditions
min
typ
max
Unit
Vdc
Vdc
Vdc
µF
V
Input voltage range
Turn-off input voltage
36
75
I
V
Ramping from higher voltage
Ramping from lower voltage
32
34
Ioff
Ion
V
Turn-on input voltage
C
Input capacitance
5.4
3.5
0.1
I
P
Input idling power
I = 0, V = 53 V
W
Ii
o
I
P
Input standby power (turned off with RC)
V = 53 V, RC activated
I
W
RC
Fundamental Circuit Diagram
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5
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EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
4
Product Qualification Specification
Characteristics
Frequency
Spectral density
Duration
10 ... 500 Hz
0.025 g /Hz
10 min each direction
2
Random Vibration
Sinusoidal vibration
IEC 68-2-34 Eb
IEC 68-2-6 Fc
Frequency
Amplitude
Acceleration
Number of cycles
10 ... 500 Hz
0.75 mm
10 g
10 in each axis
Peak acceleration
Duration
Pulse shape
200 g
3 ms
half sine
Mechanical shock
(half sinus)
IEC 68-2-27 E
a
Temperature
Number of cycles
-40 ... +100 ˚C
300
Temperature cycling
Heat/Humidity
IEC 68-2-14 N
IEC 68-2-67 C
a
a
Temperature
Humidity
Duration
+85 ˚C
85 % RH
1000 hours
Temperature, solder
Duration
260 ˚C
10 s
Solder heat stability
IEC 68-2-20 1A
Water
+55 5 ˚C
+35 5 ˚C
+35 5 ˚C
with rubbing
IEC 68-2-45 XA
Method 2
Isopropyl alcohol
Glycol ether
Method
Resistance to cleaning agents
Storage test
Temperature
Duration
125 ˚C
1000 h
IEC 68-2-2 Ba
IEC 68-2-1 Bc
Temperature, TA
Duration
-40 ˚C
2 h
Cold (in operation)
Operational life test
Duration
1000 h
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
5
Safety Specification
General information.
Isolated DC/DC converters.
Ericsson Power Modules DC/DC converters and DC/DC regulators
are designed in accordance with safety standards
IEC/EN/UL 60 950, Safety of Information Technology Equipment.
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 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 in the input filter or in the
DC/DC converter that imposes a short circuit on the input source,
this fuse will provide the following functions:
IEC/EN/UL60950 contains requirements to prevent injury or
damage due to the following hazards:
• Electrical shock
• Energy hazards
• Fire
• Isolate the faulty DC/DC converter from the input power source
so as not to affect the operation of other parts of the system.
• Mechanical and heat hazards
• Radiation hazards
• Chemical hazards
• 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 (VISO) between input and output is 1500 Vdc or 2250 Vdc for
60 seconds (refer to product specification). Leakage current is less
than 1µA at nominal input voltage.
On-board DC-DC converters are defined as component power
supplies. As components they cannot fully comply with the
provisions of any Safety requirements without “Conditions of
Acceptability”. It is the responsibility of the installer to ensure that
the final product housing these components complies with the
requirements of all applicable Safety standards and Directives for
the final product.
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.
Component power supplies for general use should comply with
the requirements in IEC60950, EN60950 and UL60950 “Safety of
information technology equipment”.
48 and 60 V dc systems.
If the input voltage to Ericsson Power Modules DC/DC converter
is 75 V dc or less, then the output remains SELV (Safety Extra Low
Voltage) under normal and abnormal operating conditions.
There are other more product related standards, e.g.
IEC61204-7 “Safety standard for power supplies",
IEEE802.3af “Ethernet LAN/MAN Data terminal equipment
power”, and ETS300132-2 “Power supply interface at the input to
telecommunications equipment; part 2: DC”,
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.
but all of these standards are based on IEC/EN/UL60950 with
regards to safety.
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.
Ericsson Power Modules DC/DC converters and DC/DC regulators
are UL 60 950 recognized and certified in accordance with EN 60
950.
The flammability rating for all construction parts of the products
meets UL 94V-0.
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.
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 Double or Reinforced Insulation from the primary circuit
(AC mains) in accordance with
It is recommended that a slow blow fuse with a rating
twice the maximum input current per selected product
be used at the input of each DC/DC regulator.
IEC/EN/UL 60 950.
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
6
PKM 4918LC PINB - 1.2 V Data
TPcb = –40…+90 °C, VI = 36...75V, sense pins connected to output pins unless otherwise specified.
Output
Unit
V
Characteristics
Conditions
min
1.18
typ
max
1.22
Output voltage initial setting
VI = 53 V, IOmax, TPcb = 25 °C
1.200
and accuracy
VOi
Output adjust range
IOmax, VI = 53 V, TPcb = 25 °C
0.1...1 x IOmax
0.96
1.16
1.18
1.32
1.24
1.22
17
V
Output voltage tolerance band
Idling voltage
V
I
I
I
O = 0
V
VO
Line regulation
O = IOmax
mV
mV
Load regulation
O = 0.01...1 x IOmax, VI = 53 V
17
Load transient
voltage deviation
0.1...1.0 x IOmax VI = 53 V
,
Vtr
ttr
300
100
mV
µs
Load step = 0.5 x IOmax
0.1...1.0 x IOmax VI = 53 V
,
Load step = 0.5 x IOmax
Load transient recovery time
Ramp-up time
0.1...1 x IOmax, VI = 53 V
0.1...0.9 x VOnom
tr
5
10
15
15
ms
ms
0.1...1 x IOmax, VI = 53 V
From VI connected to 0.9 x VOnom
ts
Start-up time
10
100
80
IO
Output current
0
A
POmax Max output power
At VO = VOnom
96
W
Ilim
Current limit threshold
Short circuit current
Output ripple
TPcb < TPcb max
82
95
50
110
110
150
A
Isc
TPcb = 25 °C
A
VOac
See ripple and noise, IOmax, VOnom
mVp-p
TPcb = 25 °C, f = 100 Hz sine wave 1 Vp-p,
VI = 53 V
SVR
Supply voltage rejection (ac)
70
dB
η
η
η
η
Efficiency - 50% load
Efficiency - 100% load
Efficiency - 50% load
Efficiency - 100% load
Power Dissipation
TPcb = +25 °C, V = 48 V, 0.5 x IOmax
87
82
87
82
%
I
T
T
T
Pcb = +25 °C, V = 48 V, IOmax
%
I
Pcb = +25 °C, V = 53 V, 0.5 x IOmax
%
I
Pcb = +25 °C, V = 53 V, IOmax
81
%
I
P
TPcb = +25 °C, V = 53 V, IOmax
I
22.6
165
W
d
f
Switching frequency
0 ... 1.0 x IOmax
145
155
kHz
s
7
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
PKM 4918LC PINB Typical Characteristics
Efficiency
Output Current Derating
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Available load current vs. ambient air temperature and airflow at
Efficiency vs. load current and input voltage at TPcb = +25 °C
V
in = 53 V. DC/DC converter mounted vertically with airflow and
test conditions as per the Thermal consideration section.
Power Dissipation
Thermal Resistance
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Tested in windtunnel with airflow and test conditions as per
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T
Output Characteristic
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EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
PKM 4918LC PINB Typical Characteristics
Start-Up
Turn-Off
Turn-off enabled by disconnecting Vin.
IO = 80 A resistive load, TPcb = +25 °C, Vin = 53 V.
Top trace: input voltage (0.5 V/div.).
Bottom trace: output voltage (20 V/div.).
Time scale: 2 ms/div.
Start-up enabled by connecting Vin.
IO = 80 A resistive load, TPcb = +25 °C, Vin = 53 V.
Top trace: output voltage (0.5 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: 5 ms/div.
Transient
Output Ripple
Output voltage response to load current step-change
(15-55-15 A) at TPcb = +25 °C, Vin = 53 V.
Top trace: output voltage (200 mV/div.).
Bottom trace: load current (50 A/div.)
Time scale: 0.1 ms/div.
Output voltage ripple (50mV/div.) at TPcb = +25 °C,
V
in = 53 V, IO = 80 A resistive load with C = 10 µF
tantalum and 0.1 µF ceramic capacitor
Band width = 20 MHz. Time scale: 2µs / div.
Output Voltage Adjust
Output Voltage Adjust
<L0IN>
The resistor value for an adjusted output voltage is
calculated by using the following equations:
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Output Voltage Adjust Upwards, Increase:
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Radj= [4896/(1.0208-(1.225/Vo))-1000 Ohm
%FDSFBTF
Output Voltage Adjust Downwards, Decrease:
Radj= [5104/((1.225/Vo)-1.0208)-1000 Ohm
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Eg Increase 8 % to VO = 1.3 Vdc
4896 / (1.0208 - (1.225/1.3)) - 1000 = 61 kOhm
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Eg Decrease 8 % to Vout = 1.1 Vdc
5104 / ((1.225/1.1) - 1.0208) - 1000 = 54 kOhm
Output voltage adjust resistor value vs.
percentage change in output voltage.
9
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
PKM 4118HC PINB - 1.5 V Data
TPcb = –40…+90 °C, VI = 36...75V, sense pins connected to output pins unless otherwise specified.
Output
Unit
V
Characteristics
Conditions
min
1.47
typ
max
1.53
Output voltage initial setting
VI = 53 V, IOmax, TPcb = 25 °C
1.50
and accuracy
VOi
Output adjust range
IOmax, VI = 53 V, TPcb = 25 °C
0.1...1 x IOmax
1.35
1.44
1.44
1.65
1.56
1.56
15
V
Output voltage tolerance band
Idling voltage
V
I
O = 0
IOmax
O = 0.01...1 x IOmax, VI = 53 V
V
VO
Line regulation
mV
mV
Load regulation
I
15
Load transient
voltage deviation
0.1...1.0 x IOmax VI = 53 V
,
Vtr
ttr
400
100
mV
µs
Load step = 0.5 x IOmax
0.1...1.0 x IOmax VI = 53 V
,
Load step = 0.5 x IOmax
Load transient recovery time
Ramp-up time
0.1...1 x IOmax, VI = 53 V
0.1...0.9 x VOnom
tr
5
10
15
15
ms
ms
0.1...1 x IOmax, VI = 53 V
From VI connected to 0.9 x VOnom
ts
Start-up time
10
100
80
IO
Output current
0
A
POmax Max output power
Ab V = VOnom
120
83
90
W
Ilim
Current limit threshold
Short circuit current
Output ripple
TPcb < TPcbmax
100
110
180
A
Isc
TPcb = 25 °C
A
VOac
See ripple and noise, IOmax, VOnom
50
70
mVp-p
TPcb = 25 °C, f = 100 Hz sine wave 1 Vp-p,
SVR
Supply voltage rejection (ac)
dB
VI = 53 V
η
η
η
η
Efficiency - 50% load
Efficiency - 100% load
Efficiency - 50% load
Efficiency - 100% load
Power Dissipation
TPcb = +25 °C, V = 48 V, 0.5 x IOmax
89
%
I
T
T
T
Pcb = +25 °C, V = 48 V, IOmax
83
%
I
Pcb = +25 °C, V = 53 V, 0.5 x IOmax
89.5
84
%
I
Pcb = +25 °C, V = 53 V, IOmax
83.5
145
%
I
P
TPcb = +25 °C, V = 53 V, IOmax
I
23.4
165
W
d
f
Switching frequency
0 ... 1.0 x IOmax
155
kHz
s
10
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
PKM 4118HC PINB Typical Characteristics
Efficiency
Output Current Derating
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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.
Efficiency vs. load current and input voltage at TPcb = +25 °C
Power Dissipation
Thermal Resistance
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Dissipated power vs. load current and input voltage at
TPcb = +25 °C
Thermal resistance vs. airspeed measured at the converter.
Tested in windtunnel with airflow and test conditions as per
the Thermal consideration section.
Output Characteristic
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Output voltage vs. load current at TPcb = +25 °C, VI = 53 V.
11
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
PKM 4118HC PINB Typical Characteristics
Start-Up
Turn-Off
Start-up enabled by connecting Vin.
IO = 80 A resistive load, TPcb = +25 °C, Vin = 53 V.
Top trace: output voltage (0.5 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: 5 ms/div.
Turn-off enabled by disconnecting Vin.
IO = 80 A resistive load, TPcb = +25 °C, Vin = 53 V.
Top trace: input voltage (0.5 V/div.).
Bottom trace: output voltage (20 V/div.).
Time scale: 2 ms/div.
Transient
Output Ripple
Output voltage response to load current step-change
(20-60-20 A) at TPcb = +25 °C, Vin = 53 V.
Top trace: output voltage (500 mV/div.).
Bottom trace: load current (50 A/div.)
Time scale: 0.1 ms/div.
Output voltage ripple (20mV/div.) at TPcb = +25 °C,
Vin = 53 V, IO = 80 A resistive load with C = 10 µF
tantalum and 0.1 µF ceramic capacitor.
Band width = 20 MHz. Time scale: 2µs / div.
Output Voltage Adjust
Output Voltage Adjust
The resistor value for an adjusted output voltage is
calculated by using the following equations:
<L0IN>
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Output Voltage Adjust Upwards, Increase:
*ODSFBTF
Radj= [5917/(0.8166- (1.225Vo))-1000]Ohm
ꢀꢁꢁꢁꢁꢁꢁ
%FDSFBTF
Output Voltage Adjust Downwards, Decrease:
Radj= [4083/(1.225Vo- (0.8166))-1000]Ohm
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Eg Increase 8% =>Vout = 1.62 Vdc
5917/(0.8166-(1.225/1.62))= 97 kOhm
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Eg Decrease 8% =>Vout = 1.38 Vdc
4083/((1.225/1.38)-0.8166))-1000= 56.4 kOhm
Output voltage adjust resistor value vs.
percentage change in output voltage.
12
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
PKM 4118GC PINB - 1.8 V Data
TPcb = –40…+90 °C, VI = 36...75V, sense pins connected to output pins unless otherwise specified.
Output
Unit
V
Characteristics
Conditions
min
1.77
typ
max
1.84
Output voltage initial setting
VI = 53 V, IOmax, TPcb = 25 °C
1.80
and accuracy
VOi
Output adjust range
IOmax, VI = 53 V, TPcb = 25 °C
0.1...1 x IOmax
1.62
1.73
1.77
1.98
1.86
1.84
25
V
Output voltage tolerance band
Idling voltage
V
I
O = 0
V
VO
Line regulation
IOmax
mV
mV
Load regulation
IO = 0.01...1 x IOmax, VI = 53 V
25
Load transient
voltage deviation
0.1...1.0 x IOmax VI = 53 V
,
Vtr
ttr
250
100
mV
µs
Load step = 0.5 x IOmax
0.1...1.0 x IOmax VI = 53 V
,
Load step = 0.5 x IOmax
Load transient recovery time
Ramp-up time
0.1...1 x IOmax, VI = 53 V
0.1...0.9 x VOnom
tr
15
20
30
ms
ms
0.1...1 x IOmax, VI = 53 V
From VI connected to 0.9 x VOnom
ts
Start-up time
10
60
71
IO
Output current
0
A
POmax Max output power
Ab V = VOnom
128
W
Ilim
Current limit threshold
Short circuit current
Output ripple & noise
TPcb < TPcbmax
72
80
A
Isc
TPcb = 25 °C
85
95
A
VOac
See ripple and noise, IOmax, VOnom
100
180
mVp-p
TPcb = 25 °C, f = 100 Hz sine wave 1 Vp-p,
VI = 53 V
SVR
Supply voltage rejection (ac)
70
dB
η
η
η
η
Efficiency - 50% load
Efficiency - 100% load
Efficiency - 50% load
Efficiency - 100% load
Power Dissipation
TPcb = +25 °C, V = 48 V, 0.5 x IOmax
90.5
87
%
I
T
T
T
Pcb = +25 °C, V = 48 V, IOmax
%
I
Pcb = +25 °C, V = 53 V, 0.5 x IOmax
90.5
87.5
%
I
Pcb = +25 °C, V = 53 V, IOmax
87
%
I
P
TPcb = +25 °C, V = 53 V, IOmax
I
19.1
160
W
d
f
Switching frequency
0 ... 1.0 x IOmax
145
155
kHz
s
13
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
PKM 4118GC PINB Typical Characteristics
Efficiency
Output Current Derating
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Efficiency vs. load current and input voltage at TPcb = +25 °C
Power Dissipation
Thermal Resistance
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Dissipated power vs. load current and input voltage at
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Thermal resistance vs. airspeed measured at the converter.
Tested in windtunnel with airflow and test conditions as per
the Thermal consideration section.
T
Output Characteristic
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Output voltage vs. load current at TPcb = +25 °C, VI = 53 V.
14
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
PKM 4118GC PINB Typical Characteristics
Start-Up
Turn-Off
Start-up enabled by connecting Vin.
IO = 71 A resistive load, TPcb = +25 °C, Vin = 53 V.
Top trace: input voltage (1 V/div.).
Bottom trace: output voltage (20 V/div.).
Time scale: 5 ms/div.
Turn-off enabled by disconnecting Vin.
IO = 71 A resistive load at TPcb = +25 °C, Vin = 53 V.
Top trace: Input voltage 1 V/div.
Bottom trace: output voltage (20 V/div.).
Time scale: 5 ms/div.
Transient
Output Ripple
Output voltage response to load current step-change
(18-54-18 A) at TPcb = +25 °C, Vin = 53 V.
Top trace: output voltage (100 mV/div.).
Bottom trace: load current (50 A/div.)
Time scale: 0.1 ms/div.
Output voltage ripple (50mV/div.) at TPcb = +25 °C,
Vin = 53 V, IO = 71 A resistive load with C = 10 µF
tantalum and 0.1 µF ceramic capacitor.
Band width = 20 MHz. Time scale: 2µs / div.
Output Voltage Adjust
Output Voltage Adjust
<L0IN>
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The resistor value for an adjusted output voltage is
calculated by using the following equations:
Output Voltage Adjust Upwards, Increase:
ꢀꢁꢁꢁꢁ
ꢀꢁꢁꢁ
ꢀꢁꢁ
ꢀꢁ
Radj= 5.11 [1.8(100+∆%)/1.225∆%- (100+2∆%)/∆%] kOhm
%FDSFBTF
*ODSFBTF
Output Voltage Adjust Downwards, Decrease:
Radj= 5.11 [(100/∆%-2)] kOhm
Eg Increase 4% =>Vout = 1.87 Vdc
5.11 [1.8(100+4)/(1.225x4)-(100+2x4)/4]=57.3 kOhm
ꢀ
Eg Decrease 2% =>Vout = 1.76 Vdc
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5.11 x(100/2-2)=245.3 kOhm
Output voltage adjust resistor value vs.
percentage change in output voltage.
15
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
PKM 4119C PINB - 2.5 V Data
TPcb = –40…+90 °C, VI = 36...75V, sense pins connected to output pins unless otherwise specified.
Output
Unit
V
Characteristics
Conditions
min
2.45
typ
max
2.55
Output voltage initial setting
VI = 53 V, IOmax, TPcb = 25 °C
2.500
and accuracy
VOi
Output adjust range
IOmax, VI = 53 V, TPcb = 25 °C
0.1...1 x IOmax
2.21
2.40
2.40
2.81
2.60
2.60
30
V
Output voltage tolerance band
Idling voltage
V
I
O = 0
V
VO
Line regulation
IOmax
mV
mV
Load regulation
IO = 0.01...1 x IOmax, VI = 53 V
30
Load transient
voltage deviation
0.1...1.0 x IOmax VI = 53 V
,
Vtr
ttr
250
40
mV
µs
Load step = 0.5 x IOmax
0.1...1.0 x IOmax VI = 53 V
,
Load step = 0.5 x IOmax
Load transient recovery time
Ramp-up time
0.1...1 x IOmax, VI = 53 V
0.1...0.9 x VOnom
tr
5
10
15
15
ms
ms
0.1...1 x IOmax, VI = 53 V
From VI connected to 0.9 x VOnom
ts
Start-up time
10
100
55
IO
Output current
0
A
POmax Max output power
Ab V = VOnom
137.5
58
W
Ilim
Current limit threshold
Short circuit current
Output ripple & noise
TPcb < TPcbmax
75
A
Isc
TPcb = 25 °C
65
90
A
VOac
See ripple and noise, IOmax, VOnom
80
55
130
mVp-p
TPcb = 25 °C, f = 100 Hz sine wave 1 Vp-p,
VI = 53 V
SVR
Supply voltage rejection (ac)
dB
η
η
η
η
Efficiency - 50% load
Efficiency - 100% load
Efficiency - 50% load
Efficiency - 100% load
Power Dissipation
TPcb = +25 °C, V = 48 V, 0.5 x IOmax
92
88
91
88
%
I
T
T
T
Pcb = +25 °C, V = 48 V, IOmax
%
I
Pcb = +25 °C, V = 53 V, 0.5 x IOmax
%
I
Pcb = +25 °C, V = 53 V, IOmax
86.5
145
%
I
P
TPcb = +25 °C, V = 53 V, IOmax
I
20.8
165
W
d
f
Switching frequency
0 ... 1.0 x IOmax
155
kHz
s
16
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
PKM 4119C PINB Typical Characteristics
Efficiency
Output Current Derating
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testconditions as per the Thermal consideration section.
Efficiency vs. load current and input voltage at TPcb = +25 °C
Thermal Resistance
Power Dissipation
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Thermal resistance vs. airspeed measured at the converter.
Tested in windtunnel with airflow and test conditions as per
the Thermal consideration section.
T
Output Characteristic
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17
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
PKM 4119C PINB Typical Characteristics
Start-Up
Turn-Off
Start-up enabled by connecting Vin.
IO = 55 A resistive load, TPcb = +25 °C, Vin = 53 V.
Top trace: output voltage (1 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: 2 ms/div.
Turn-off enabled by disconnecting Vin.
IO = 55 A resistive load at TPcb = +25 °C, Vin = 53 V.
Top trace: output voltage (1 V/div.).
Bottom trace: input voltage (20 V/div.)
Time scale: 5 ms/div.
Transient
Output Ripple
Output voltage response to load current step-change
Output voltage ripple (50 mV/div.) at TPcb = +25 °C,
(14-38-14 A) at TPcb = +25 °C, Vin = 53 V.
Top trace: Input voltage (50 mV/div.).
Bottom trace: load current (40 A/div.).
Time scale: 0.1 ms/div.
Vin = 53 V, IO = 55 A resistive load with C = 10 µF
tantalum and 0.1 µF ceramic capacitor.
Band width = 20 MHz. Time scale: 2 µs/div.
Output Voltage Adjust
Output Voltage Adjust
<L0IN>
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The resistor value for an adjusted output voltage is
calculated by using the following equations:
Output Voltage Adjust Upwards, Increase:
Radj= 5.11 [2.5(100+∆%)/1.225∆%- (100+2∆%)/∆%] kOhm
ꢀꢁꢁ
ꢀꢁ
Output Voltage Adjust Downwards, Decrease:
Radj= 5.11 [(100/∆%-2)] kOhm
%FDSFBTF
*ODSFBTF
Eg Increase 4% =>Vout = 2.6 Vdc
5.11 [2.5(100+4)/(1.225x4)-(100+2x4)/4]=133 kOhm
ꢀ
Eg Decrease 2% =>Vout = 2.45 Vdc
<ꢆ>
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ꢃ
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ꢅ
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5.11 x(100/2-2)=245.3 kOhm
Output voltage adjust resistor value vs.
percentage change in output voltage.
18
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
PKM 4110C PINB - 3.3 V Data
TPcb = –40…+90 °C, VI = 36...75V, sense pins connected to output pins unless otherwise specified.
Output
Unit
V
Characteristics
Conditions
min
3.24
typ
max
3.36
Output voltage initial setting
VI = 53 V, IOmax, TPcb = 25 °C
3.30
and accuracy
VOi
Output adjust range
IOmax, VI = 53 V, TPcb = 25 °C
0.1...1 x IOmax
2.97
3.23
3.23
-11
3.63
3.37
3.37
22
V
Output voltage tolerance band
Idling voltage
V
I
O = 0
V
VO
Line regulation
IOmax
mV
mV
Load regulation
IO = 0.01...1 x IOmax, VI = 53 V
-11
22
Load transient
voltage deviation
0.1...1.0 x IOmax VI = 53 V
,
Vtr
ttr
500
100
mV
µs
Load step = 0.5 x IOmax
0.1...1.0 x IOmax VI = 53 V
,
Load step = 0.5 x IOmax
Load transient recovery time
Ramp-up time
0.1...1 x IOmax, VI = 53 V
0.1...0.9 x VOnom
tr
7
10
15
30
ms
ms
0.1...1 x IOmax, VI = 53 V
From VI connected to 0.9 x VOnom
ts
Start-up time
10
100
50
IO
Output current
0
A
POmax Max output power
Ab V = VOnom
165
55
W
Ilim
Current limit threshold
Short circuit current
Output ripple & noise
TPcb < TPcbmax
70
A
Isc
TPcb = 25 °C
60
50
75
A
VOac
See ripple and noise, IOmax, VOnom
125
mVp-p
TPcb = 25 °C, f = 100 Hz sine wave 1 Vp-p,
VI = 53 V
SVR
Supply voltage rejection (ac)
50
dB
η
η
η
η
Efficiency - 50% load
Efficiency - 100% load
Efficiency - 50% load
Efficiency - 100% load
Power Dissipation
TPcb = +25 °C, V = 48 V, 0.5 x IOmax
92
90
92
90
%
I
T
T
T
Pcb = +25 °C, V = 48 V, IOmax
%
I
Pcb = +25 °C, V = 53 V, 0.5 x IOmax
%
I
Pcb = +25 °C, V = 53 V, IOmax
89
%
I
P
TPcb = +25 °C, V = 53 V, IOmax
I
20.4
165
W
d
f
Switching frequency
0 ... 1.0 x IOmax
145
155
kHz
s
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
19
PKM 4110C PINB Typical Characteristics
Efficiency
Output Current Derating
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Available load current vs. ambient air temperature and airflow
at Vin = 53 V. DC/DC converter mounted vertically with airflow
testconditions as per the Thermal consideration section.
Thermal Resistance
Power Dissipation
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T
Output Characteristic
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EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
20
PKM 4110C PINB Typical Characteristics
Start-Up
Turn-Off
Turn-off enabled by disconnecting Vin.
IO = 50 A resistive load at TPcb = +25 °C, Vin = 53 V.
Top trace: output voltage (1 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: 5 ms/div.
Start-up enabled by connecting Vin.
IO = 50 A resistive load, TPcb = +25 °C, Vin = 53 V.
Top trace: output voltage (1 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: 5 ms/div.
Transient
Output Ripple
Output voltage response to load current step-change
(12.5-37.5-12.5 A) at TPcb = +25 °C, Vin = 53 V.
Top trace: output voltage (0.5 V/div.).
Bottom trace: load current: (40 A/div.).
Time scale: 0.1 ms/div.
Output voltage ripple (50mV/div.) at TPcb = +25 °C,
Vin = 53 V, IO = 50 A resistive load with C = 10 µF
tantalum and 0.1 µF ceramic capacitor.
Band width = 20 MHz. Time scale: 2µs / div.
Output Voltage Adjust
Output Voltage Adjust
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The resistor value for an adjusted output voltage is
calculated by using the following equations:
Output Voltage Adjust Upwards, Increase:
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ꢀꢁ
Radj= 5.11 [3.3(100+∆%)/1.225∆%- (100+2∆%)/∆%] kOhm
%FDSFBTF
*ODSFBTF
Output Voltage Adjust Downwards, Decrease:
Radj= 5.11 [(100/∆%-2)] kOhm
Eg Increase 4% =>Vout = 3.43 Vdc
5.11 [3.3(100+4)/(1.225x4)-(100+2x4)/4]=219.9 kOhm
ꢀ
Eg Decrease 2% =>Vout = 3.23 Vdc
5.11 x(100/2-2)=245.3 kOhm
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Output voltage adjust resistor value vs.
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EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
21
PKM 4211C PINB - 5 V Data
TPcb = –40…+90 °C, VI = 36...75V, sense pins connected to output pins unless otherwise specified.
Output
Unit
V
Characteristics
Conditions
min
4.90
typ
max
5.10
Output voltage initial setting
VI = 53 V, IOmax, TPcb = 25 °C
5.00
and accuracy
VOi
Output adjust range
IOmax, VI = 53 V, TPcb = 25 °C
0.1...1 x IOmax
4.50
4.80
4.80
5.50
5.20
5.20
35
V
Output voltage tolerance band
Idling voltage
V
I
O = 0
V
VO
Line regulation
IOmax
mV
mV
Load regulation
IO = 0.01...1 x IOmax, VI = 53 V
35
Load transient
voltage deviation
0.1...1.0 x IOmax VI = 53 V
,
Vtr
ttr
700
100
mV
µs
Load step = 0.5 x IOmax
0.1...1.0 x IOmax VI = 53 V
,
Load step = 0.5 x IOmax
Load transient recovery time
Ramp-up time
0.1...1 x IOmax, VI = 53 V
0.1...0.9 x VOnom
tr
5
7
10
15
30
ms
ms
0.1...1 x IOmax, VI = 53 V
From VI connected to 0.9 x VOnom
ts
Start-up time
100
40
IO
Output current
0
A
POmax Max output power
Ab V = VOnom
200
W
Ilim
Current limit threshold
Short circuit current
Output ripple & noise
TPcb < TPcbmax
42
44
60
60
A
Isc
TPcb = 25 °C
65
A
VOac
See ripple and noise, IOmax, VOnom
150
mVp-p
TPcb = 25 °C, f = 100 Hz sine wave 1 Vp-p,
VI = 53 V
SVR
Supply voltage rejection (ac)
70
dB
η
η
η
η
Efficiency - 50% load
Efficiency - 100% load
Efficiency - 50% load
Efficiency - 100% load
Power Dissipation
TPcb = +25 °C, V = 48 V, 0.5 x IOmax
93
%
I
T
T
T
Pcb = +25 °C, V = 48 V, IOmax
90.5
92
%
I
Pcb = +25 °C, V = 53 V, 0.5 x IOmax
%
I
Pcb = +25 °C, V = 53 V, IOmax
89
89.5
%
I
P
TPcb = +25 °C, V = 53 V, IOmax
I
24.7
220
W
d
f
Switching frequency
0 ... 1.0 x IOmax
180
200
kHz
s
22
EN/LZT 146 035 R3C ©Ericsson Power Modules, May 2005
PKM 4000C Datasheet
PKM 4211C PINB Typical Characteristics
Efficiency
Output Current Derating
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Efficiency vs. load current and input voltage at TPcb = +25 °C
Thermal Resistance
Power Dissipation
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Dissipated power vs. load current and input voltage at
Pcb = +25 °C
T
Output Characteristic
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23
EN/LZT 146 035 R3C ©Ericsson Power Modules, May 2005
PKM 4000C Datasheet
PKM 4211C PINB Typical Characteristics
Start-Up
Turn-Off
Start-up enabled by connecting Vin.
IO = 40 A resistive load, TPcb = +25 °C, Vin = 53 V.
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: 5 ms/div.
Turn-off enabled by disconnecting Vin.
IO = 40 A resistive load at TPcb = +25 °C, Vin = 53 V.
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: 5 ms/div.
Transient
Output Ripple
Output voltage response to load current step-change
(10-30-10 A) at TPcb = +25 °C, Vin = 53 V.
Top trace: output voltage (500 mV/div.).
Bottom trace:load current: (40 A/div.).
Time scale: 0.1 ms/div.
Output voltage ripple (50 mV/div.) at TPcb = +25 °C,
Vin = 53 V, IO = 40 A resistive load with C= 10 µF
tantalum and 0.1 µF ceramic capacitor.
Band width = 20 MHz. Time scale: 2 µs / div.
Output Voltage Adjust
Output Voltage Adjust
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Output Voltage Adjust Upwards, Increase:
Radj= 5.11 [5(100+∆%)/1.225∆%- (100+2∆%)/∆%] kOhm
Output Voltage Adjust Downwards, Decrease:
Radj= 5.11 [(100/∆%-2)] kOhm
Eg Increase 4% =>Vout = 5.2 Vdc
5.11 [5(100+4)/(1.225x4)-(100+2x4)/4]=404.3 kOhm
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Output voltage adjust resistor value vs.
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24
EN/LZT 146 035 R3C ©Ericsson Power Modules, May 2005
PKM 4000C Datasheet
EMC Specification
The conducted EMI measurement was performed using a
module placed directly on the test bench.
The fundamental switching frequency is 150kHz.
Printed Circuit Board
Power Module
5µH 50Ω
50 ohm temination
+
out
in
LISN
rcvr
DC
Filter
(if used)
Power
Source
Conducted EMI Input termonal value (typ) .
5µH 50Ω
LISN
-
out
in
1 m Twisted Pair
rcvr
Resistive
Load
Optional Connection
to Earth Ground
50 ohm input
EMC
Reciver
Computer
Test set-up.
Layout Recommendation
The radiated EMI performance of the DC/DC converter will
be optimised by including a ground plane in the Pcb area
under the DC/DC converter.
This approach will return switching noise to ground as di-
rectly as possible, with improvements to both emissions and
susceptibility.
If one ground trace is used, it should be connected to the
input return. Alternatively, two ground traces may be used,
with the trace under the input side of the DC/DC converter
connected to the input return and the trace under the output
side of the DC/DC converter connected to the output return.
PKM 4118GC 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.
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Make sure to use appropriate safety isolation spacing be-
tween these two return traces. The use of two traces as de-
scribed will provide the capability of routing the input noise
and output noise back to their respective returns.
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Output ripple and noise
ꢀ
ꢀ
The circuit below has been used for the ripple and noise
measurements on the PKM 4000C Series DC/DC converters.
The capacitors are ceramic type. Low ESR is critical for
achieveing these results.
Ceramic
Capacitor
Tantalum
Capacitor
+Vout
+Sense
+
Trim
0.1uF
10uF
Load
-Sense
-Vout
BNC
Connector
to Scope
* Conductor from Vout to capacitors = 50mm [1.97in]
Output ripple and noise test setup
PKM 4118GC with filter.
25
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
Operating Information
Remote Sense
Input Voltage
The input voltage range 36…75 Vdc meets the requirements
of the European Telecom Standard ETS 300 132-2 for
normal input voltage range in –48 V and –60 V DC systems,
-40.5…-57.0 V and –50.0…-72 V respectively. At input
voltages exceeding 75 V, the power loss will be higher than
at normal input voltage and TPcb must be limited to absolute
max +110 °C. The absolute maximum continuous input
voltage is 80 Vdc.
All PKM 4000C Series 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 the
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 susceptibil-
ity is highly recommended. The remote sense circuitry will
compensate for up to 10% voltage drop between the sense
voltage and the voltage at the output pins. The output volt-
age 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.
Turn-Off Input Voltage
The PKM 4000C Series 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 1 V where the turn on input voltage is the highest.
Remote Control (RC)
The PKM 4000C Series DC/DC
+In
RC
-In
converters have a remote control
function referenced to the primary
side (- In), with negative and positive
logic options available. The RC
Output Voltage Adjust (Vadj)
All PKM 4000C Series 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 offset) must be kept below
the overvoltage trip point, to prevent the converter from
shut down. Also note that at increased output voltages the
maximum power rating of the converter remains the same,
and the output current capability will decrease correspond-
ingly. To decrease the output voltage the resistor should be
connected between Vadj pin and –Sense pin. To increase
the voltage the resistor should be connected between Vadj
pin and +Sense pin. The resistor value of the Output voltage
adjust function is according to information given under the
output section.
function allows the converter to be
turned on/off by an external device
like a semiconductor or mechanical
Circuit configuration
for RC function
switch. The RC pin has an internal pull up resistor to + In.
The needed maximum sink current is 1 mA. When the RC
pin is left open, the voltage generated on the RC pin is
3.5 - 6.0 V. The maximum allowable leakage current of the
switch is 50 µA.
The standard converter is provided with “negative logic”
remote control and the converter will be off until the RC
pin is connected to the - In. To turn on the converter the
voltage between RC pin and - In should be less than 1 V.
To turn off the converter the RC pin should be left open, or
connected to a voltage higher than 2 V referenced to - In. In
situations where it is desired to have the converter to power
up automatically without the need for control signals or a
switch, the RC pin can be wired directly to - In.
+Out
+Out
+Sense
+Sense
R
adj
Load
Load
V
V
adj
adj
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 0.8 V. The converter will restart automatically
when this connection is opened.
R
adj
-Sense
-Sense
-Out
-Out
Decrease
Increase
Circuit configuration for output voltage adjust
26
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
Operating Information
Current Limit Protection
Maximum Capacitive Load
The PKM 4000C Series DC/DC converters include current
limiting circuitry that allows them to withstand continuous
overloads or short circuit conditions on the output. The out-
put voltage will decrease towards zero for output currents in
excess of max output current (Iomax).
The converter will resume normal operation after removal
of the overload. The load distribution system should be
designed to carry the maximum output short circuit current
specified.
When powering loads with significant dynamic current
requirements, the voltage regulation at the load can be
improved by addition of decoupling capacitance at the
load. The most affective technique is to locate low ESR
ceramic capacitors as close to the load as possible, using
several capacitors to lower the effective ESR. These
ceramic capacitors will handle short duration high-frequency
components of dynamic load changes. In addition, higher
values of electrolytic capacitors should be used to handle
the mid-frequency components. It is equally important
to use good design practise when configuring the DC
distribution system.
Over Voltage Protection (OVP)
The PKM 4000C Series DC/DC converters include output
overvoltage protection. In the event of an overvoltage condi-
tion due to malfunction in the voltage monitoring circuits, the
converter's PWM will automatically dictate minimum duty-
cycle thus reducing the output voltage to a minimum.
Low resistance and low inductance Pcb layouts and cabling
should be used. Remember that when using remote sensing,
all resistance, inductance and capacitance of the distribution
system is within the feedback loop of the converter. This
can affect on the converters compensation and the resulting
stability and dynamic response performance. As a “rule of
thumb”, 100µF/A of output current can be used without
any additional analysis. For example with a 25A converter,
values of decoupling capacitance up to 2500 µF can be
used without regard to stability. With larger values of
capacitance, the load transient recovery time can exceed
the specified value. As much of the capacitance as possible
should be outside the remote sensing loop and close to the
load. The absolute maximum value of output capacitance is
10 000 µF. For values larger than this, please contact your
local Ericsson Power Modules representative.
Over Temperature Protection (OTP)
The PKM 4000C Series DC/DC converters are protected
from thermal overload by an internal over temperature
shutdown circuit. When the Pcb temperature (TC reference
point) exceeds the temperature trig point (120 °C) for the
OTP circuit the converter will cut down output power. The
converter will go into hiccup mode until safe operational
temperature is restored.
Input And Output Impedance
The impedance of both the power source and the load will
interact with the impedance of the DC/DC converter. It is
most important to have a low characteristic impedance,
both at the input and output, as the converters have a low
energy storage capability. The PKM 4000C Series DC/DC
converters have been designed to be completely stable
without the need for external capacitors on the input or
the output circuits. The performance in some applications
can be enhanced by addition of external capacitance as
described under maximum capacitive load. If the distribution
of the input voltage source to the converter contains
significant inductance, the addition of a 100µF capacitor
across the input of the converter will help insure stability.
This capacitor is not required when powering the DC/DC
converter from a low impedance source with short, low
inductance, input power leads.
Parallel Operation
The PKM 4000C Series DC/DC converters can be paralleled
for redundancy if external o-ring diodes are used in series
with the outputs. It is not recommended to parallel the PKM
4000C Series DC/DC converters for increased power without
using external current sharing circuits.
27
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
Thermal Consideration
Calculation of ambient temperature
General
The PKM 4000C series DC/DC converters are designed
to operate in a variety of thermal environments, however
sufficient cooling should be provided to help ensure reliable
operation. Heat is removed by conduction, convection and
radiation to the surrounding environment. Increased airflow
enhances the heat transfer via convection. The available
load current vs. ambient air temperature and airflow at
Vin =53 V for each model is according to the information
given under the output section. The test is done in a
wind tunnel with a cross section of 305 x 305 mm, the
DC/DC converter vertically mounted on a 16 layer Pcb
with a size of 254 x 254 mm, each layer with 35 µm (1
oz) copper. Proper cooling can be verified by measuring
the temperature of selected devices. Peak temperature
can occur at positions P1 - P4. The temperature at these
positions should not exceed the recommended max values.
By using the thermal resistance the maximum allowed
ambient temperature can be calculated.
1. The powerloss is calculated by using the formula
((1/η) - 1) × output power = power losses.
η = efficiency of converter. E.g 90% = 0.90
2. Find the value of the thermal resistance for each product in
the diagram by using the airflow speed at the output section
of the converter. Take the thermal resistance x powerloss to
get the temperature increase.
3. Max allowed calculated ambient temperature is: Max
T
Pcb of DC/DC converter – temperature increase.
E.g PKM 4110C PINB at 1m/s:
1
A. ((
) - 1) × 165 W = 18.3 W
0.9
B. 18.3 W × 4.2 °C/W = 77 °C
Note that the recommended max value is the absolute
maximum rating (non destruction) and that the electrical
output data is guaranteed up to TPcb +90 °C.
C. 110 °C - 77 °C = max ambient temperature is 33 °C
The real temperature will be dependent on several factors,
like Pcb size and type, direction of airflow, air turbulence etc.
It is recommended to verify the temperature by testing.
Position
Device
TC
Recommended
max value
P1
P2
P3
P4
Pcb
110 °C
120 °C
120 °C
130 °C
Transistor
Transistor
Transformer
Tsurface
Tsurface
Tsurface
Input side
1ꢃ
1ꢁ
1ꢂ
1ꢀ
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Output side
28
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
Soldering Information
Reliability
The Mean Time Between Failure (MTBF) of the PKM 4000C
series DC/DC converter is calculated at full output power
and an operating ambient temperature (TA) of +40°C.
Different methods could be used to calculate the predicted
MTBF and failure rate which may give different results.
Ericsson Power Modules currently uses two different
methods, Ericsson failure rate data system DependTool and
Telcordia SR332.
The PKM 4000C Series DC/DC converters are intended
for through hole mounting on a PCB. When wave soldering
is used max temperature on the pins is specified to
260°C for 10 seconds. Maximum preheat rate of 4°C/s
and temperature of max 130°C is suggested. When hand
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.
Predicted MTBF for the PKM 4000C series products is:
2.7 million hours according to DependTool.
1.4 million hours according to Telcordia SR332, issue 1,
Black box techique.
No-clean 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.
The Ericsson failure rate data system is based on field
tracking data. The data corresponds to actual failure
rates of components used in Information Technology
and Telecom (IT&T) equipment in temperature controlled
environments
Delivery Package Information
PKM 4000C series standard delivery package is a 20 pcs box.
(one box contains 1 full tray and 1 hold down tray)
Clamshell Specification
(TA = -5...+65°C). Telcordia SR332 is a commonly used
standard method intended for reliability calculations in IT&T
equipment. The parts count procedure used in this method
was originally modeled on the methods from MIL-HDBK-
217F, Reliability Predictions of Electronic Equipment. It
assumes that no reliability data is available on the actual
units and devices for which the predictions are to be
made, i.e. all predictions are based on generic reliability
parameters.
Material:
Polystyrene (PS)
10 MOhm/sq
black
Max surface resistance:
Color:
Capacity:
20 pcs/tray
Loaded tray stack pitch: 38 mm (1.50 In)
Weight: 138 g (typ)
Design for Environment (DfE)
The PKM 4000C Series DC/DC converters are designed to
fulfil the wanted functionality with minimum environmental
impact. The PKM 4000C Series DC/DC converters are
RoHS compliant, meaning that the content of hazardous
substances are below the following levels:
Quality Statement
The PKM 4000C series DC/DC converters are designed
and manufactured in an industrial environment where
quality systems and methods like ISO 9000, 6σ (sigma),
and SPC are intensively in use to boost the continuous
improvements strategy. Infant mortality or early failures
in the products 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 our products.
Lead (Pb):
1000 ppm by weight
1000 ppm by weight
100 ppm by weight
Mercury (Hg):
Cadmium (Cd):
Hexa Valent Chromium (Cr6+): 1000 ppm by weight
PBB & PBDE: 1000 ppm by weight
The low weight high efficiency converters are shipped in a
recyclable package.
Limitation of Liability
Ericsson Power Modules does not make any other
warranties, expressed or implied including any warranty of
merchantability or fitness for a particular purpose (including,
but not limited to, use in life support applications, where
malfunctions of product can cause injury to a person's
health or life).
29
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
Sales Offices and Contact Information
Company Headquarters
Ericsson Power Modules AB
LM Ericssons väg 30
SE-126 25 Stockholm
Sweden
Italy, Spain (Mediterranean)
Ericsson Power Modules AB
Via Cadorna 71
20090 Vimodrone (MI)
Italy
Phone: +46-8-568-69620
Fax: +46-8-568-69599
Phone: +39-02-265-946-07
Fax: +39-02-265-946-69
China
Japan
Ericsson Simtek Electronics Co.
33 Fuhua Road
Jiading District
Shanghai 201 818
China
Ericsson Power Modules AB
Kimura Daini Building, 3 FL.
3-29-7 Minami-Oomachi, Shinagawa-ka
Tokyo 140-0013
Japan
Phone: +86-21-5990-3258
Fax: +86-21-5990-0188
Phone: +81-3-5733-5107
Fax: +81-3-5753-5162
France, Switzerland, Benelux
Ericsson Power Modules AB
Bat Sologne
North and South America
Ericsson Inc. Power Modules
6300 Legacy Dr.
17 Rue des 4 vents
92380 Garches
Plano, TX 75024
USA
France
Phone: +1-972-583-5254
+1-972-583-6910
Fax: +1-972-583-7839
Phone: +33-1-4741-5244
Fax: +33-1-4741-5244
Germany, Austria
Ericsson Power Modules AB
Mühlhauser Weg 18
85737 Ismaning
UK, Eire
Ericsson Power Modules AB
United Kingdom
Germany
Phone: +44-1869-233-992
Fax: +44-1869-232-307
Phone: +49-89-9500-6905
Fax: +49-89-9500-6911
Hong Kong (Asia Pacific)
Ericsson Ltd.
12/F. Devon House
979 King’s Road
Quarry Bay
All other countries
Contact Company Headquarters
or visit our website:
www.ericsson.com/powermodules
Hong Kong
Phone: +852-2590-2453
Fax: +852-2590-7152
Information given in this data sheet is believed to be accurate and reliable.
No responsibility is assumed for the consequences of its use nor for any infringement
of patents or other rights of third parties which may result from its use.
No license is granted by implication or otherwise under any patent or patent rights of
Ericsson Power Modules. These products are sold only according to
Ericsson Power Modules’ general conditions of sale, unless otherwise confirmed in
writing. Specifications subject to change without notice.
EN/LZT 146 035 R3D ©Ericsson Power Modules, June 2005
PKM 4000C Datasheet
30
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