Compliant to RoHS II EU Directive 2011/65/EC (-Z versions)
Compliant to ROHS EU Directive 2002/95/EC with lead solder
exemption (non-Z versions)
Delivers up to 3.5A Output current
15V (1A), 12V (1.25A), 5.0V (3A) and 3.3V (3.5A)
High efficiency – 86% at 5.0V full load (V
IN
=54 Vdc)
Low output ripple and noise
Small Size and low profile
27.94mm x 24.38mm x 8.5mm
(1.10 x 0.96 x 0.335 in)
Industry Standard pin-out:
TH version is LW series compatible
Surface mount (SMT) or Through hole (TH)
Remote On/Off (optional pin on TH version)
Output overcurrent/voltage protection
Single Tightly regulated output
Output voltage adjustment trim 10%
Wide operating temperature range (-40°C to85°C)
Meets the voltage insulation requirements for ETSI 300-132-2
and complies with and is Licensed for Basic Insulation rating per
EN 60950
CE mark meets the 2006/95/EC directive
§
UL* 60950-1Recognized, CSA
†
C22.2 No. 60950-1-03 Certified,
and VDE‡ 0805:(IEC60950, 3rd Edition) Licensed
ISO** 9001 and ISO 14001 certified manufacturing facilities
Approved for Basic Insulation
Applications
Wireless Networks
Distributed power architectures
Optical and Access Network Equipment
Enterprise Networks
Latest generation IC’s (DSP, FPGA, ASIC) and
Microprocessor powered applications
Options
Remote On/Off logic (positive or negative), pin
optional for TH version (Suffix 1 or 4)
Output voltage adjustment-Trim, pin optional for
TH version (Suffix 9)
Surface Mount/Tape and Reel (-SR Suffix)
Description
The SW/SC series power modules are isolated dc-dc converters that operate over a wide range of input voltage (VIN = 18 - 36Vdc
for SC modules and VIN = 36 – 75Vdc for SW modules) and provide a single precisely regulated output. This series is a low cost,
smaller size alternative to the existing LW/LAW/LC with enhanced performance parameters. The output is fully isolated from the
input, allowing versatile polarity configurations and grounding connections. The modules exhibit high efficiency, typical efficiency
of 86% for 5.0V/3A. Built-in filtering for both input and output minimizes the need for external filtering.
§ This product is intended for integration into end-use equipment. All of the required procedures of end-use equipment should be followed.
* UL is a registered trademark of Underwriters Laboratories, Inc.
†
CSA is a registered trademark of Canadian Standards Association.
‡
VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
** ISO is a registered trademark of the International Organization of Standards
RoHS Compliant
Representative Photo.
Actual product may vary.
SW/SC001/003 Series DC-DC Converter Power Modules:
18-36V & 36-75Vdc Input; 3.3V-15Vdc Output; 1-3.5A Output Current
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
I/O Isolation Voltage (100% factory Hi-Pot tested)
All
2250
Vdc
Parameter
Device
Symbol
Min
Typ
Max
Unit
Operating Input Voltage
SW
VIN
36
54
75
Vdc SC
VIN
18
27
36
Vdc
Maximum Input Current (VIN=0V to 75V, IO=I
O, max
)
SW
I
IN,max
0.6
Adc
(VIN=0V to 36V, IO=I
O, max
)
SC
I
IN,max
1.2
Adc
Inrush Transient
All
I2t
0.05
A2s
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 12μH source impedance; VIN=0V to 75V, IO=
I
Omax
; see Test configuration section)
All
30 mAp-p
Input Ripple Rejection (120Hz)
All
50 dB
EMC, EN55022 See EMC Considerations section
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings
only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations
sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability.
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This power module can be used in a wide variety of applications, ranging from simple standalone operation to being part of
complex power architecture. To preserve maximum flexibility, internal fusing is not included; however, to achieve maximum safety
and system protection, always use an input line fuse. The safety agencies require a fast-acting fuse with a maximum rating of 3A
(see Safety Considerations section). Based on the information provided in this data sheet on inrush energy and maximum dc input
current, the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s data sheet for further information.
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Case 1: On/Off input is set ON and then input power is
applied (T
delay
= from instant at which VIN=V
IN, min
until VO =
10% of V
O, set
).
All
T
delay
Case1
20
50
ms
Case 2: Input power is applied for at least 1 second and
then On/Off input is set from OFF to ON (T
delay
= from instant
at which VIN=V
IN, min
until VO = 10% of V
O, set
).
All
T
delay
Case2
20
50
ms
T
rise
= time for VO to rise from 10% of V
O, set
to 90% of V
O, set
.
All
T
rise
0.1 1 ms
T
rise
= time for VO to rise from 10% of V
O, set
to 90% of V
O, set
with max ext capacitance
All
T
rise
1.5 ms
Output Voltage Overshoot
3
% V
O, set
(IO=80% of I
O, max
, VIN= 54V, TA=25°C)
Output Overvoltage Protection
15V
V
O, limit
16.6 21.0
V
12V
V
O, limit
13.3 16.0
V
5.0V
V
O, limit
5.6 7.0
V
3.3V
V
O, limit
3.7 5.4
V
Input Undervoltage Lockout
Turn-on Threshold
SW
V
uv/on
33
36
V
Turn-off Threshold
SW
V
uv/off
27.5
30.5 V
Hysterisis
SW
V
hyst
2.5 V
Turn-on Threshold
SC
V
uv/on
17
18
V
Turn-off Threshold
SC
V
uv/off
13.5
14.5 V
Hystersis
SC
V
hyst
3.0 V
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See
Feature Descriptions for additional information.
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Figure 1. Converter Efficiency versus Output Current.
Figure 4. Typical Start-Up Using Remote On/Off, negative
logic version shown.
OUTPUT CURRENT, Io (A)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0102030405060708090 100 110
3.0 m/s (600 ft./min.)
2.0 m/s (400 ft./min.)
1.0 m/s (200 ft./min.)
Natural Convection
OUTPUT VOLTAGE, OUTPUT CURRENT
V
O
(V) (50mV/div), I
O
(A) (0.2A/div)
AMBIENT TEMPERATURE, TA OC
TIME, t (1ms/div)
Figure 2. Derating Output Current versus Local Ambient
Temperature and Airflow.
Figure 5. Transient Response to Dynamic Load Change from
50% to 75% to 50% of full load.
OUTPUT VOLTAGE,
V
O
(V) (20mV/div)
OUTPUT VOLTAGE
V
O
(V) (2.5V/div)
TIME, t (1s/div)
TIME, t (500s/div)
Figure 3. Typical Output Ripple and Noise, VIN=V
IN, nom
IO=80% of I
O, max.
Figure 6. Typical Start-Up Output Voltage Rise Characteristic.
Characteristic Curves
The following figures provide typical characteristics for the SW001A0C91 (15.0V, 1A) at 25ºC. The figures are identical for either
positive or negative Remote On/Off logic.
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Figure 13. Converter Efficiency Vs Load at Vo= 5V.
Figure 16. Typical Start-Up Using Remote On/Off, negative
logic version shown.
OUTPUT CURRENT, Io (A)
0
1
2
3
4
0102030405060708090100 110
3.0 m/s (600 ft./min.)
2.0 m/s (400 ft./min.)
1.0 m/s (200 ft./min.)
Natural Convection
OUTPUT VOLTAGE, OUTPUT CURRENT
V
O
(V) (50mV/div), I
O
(A) (0.2A/div)
AMBIENT TEMPERATURE, TA OC
TIME, t (1.0ms/div)
Figure 14. Derating Output Current versus Local Ambient
Temperature and Airflow.
Figure 17. Transient Response to Dynamic Load Change from
50% to 75% to 50% of full load.
OUTPUT VOLTAGE,
V
O
(V) (20mV/div)
OUTPUT VOLTAGE
V
O
(V) (1V/div)
TIME, t (1s/div)
TIME, t (100s/div)
Figure 15. Typical Output Ripple and Noise, VIN=V
IN, nom
IO=80% of I
O, max.
Figure 18. Typical Start-Up Output Voltage Rise Characteristic.
Characteristic Curves (continued)
The following figures provide typical characteristics for the SW003A0A91 (5.0V, 3A) at 25ºC. The figures are identical for either
positive or negative Remote On/Off logic.
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Figure 22. Typical Start-Up Using Remote On/Off, negative
logic version shown.
OUTPUT CURRENT, Io (A)
0
1
2
3
4
0102030 4050 60 708090 100 110
3.0m/s (600ft/min)
2.0m/s (400ft/min)
1.0m/s (200ft/min)
Natural Convection
OUTPUT VOLTAGE, OUTPUT CURRENT
V
O
(V) (50mV/div), I
O
(A) (0.2A/div)
AMBIENT TEMPERATURE, TA OC
TIME, t (1.0ms/div)
Figure 20. Derating Output Current versus Local Ambient
Temperature and Airflow.
Figure 23. Transient Response to Dynamic Load Change from
50% to 75% to 50% of full load.
OUTPUT VOLTAGE,
V
O
(V) (20mV/div)
OUTPUT VOLTAGE
V
O
(V) (1V/div)
TIME, t (2s/div)
TIME, t (100s/div)
Figure 21. Typical Output Ripple and Noise, VIN=V
IN, nom
IO=80% of I
O, max.
Figure 24. Typical Start-Up Output Voltage Rise Characteristic.
Characteristic Curves (continued)
The following figures provide typical characteristics for the SW003A5F91 (3.3V, 3.5A) at 25ºC. The figures are identical for either
positive or negative Remote On/Off logic.
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Figure 28. Typical Start-Up Using Remote On/Off, negative
logic version shown.
OUTPUT CURRENT, Io (A)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0102030405060708090 100 110
3.0 m/s (600 ft./min.)
2.0 m/s (400 ft./min.)
1.0 m/s (200 ft./min.)
Natural Convection
OUTPUT VOLTAGE, OUTPUT CURRENT
V
O
(V) (50mV/div), I
O
(A) (0.2A/div)
AMBIENT TEMPERATURE, TA OC
TIME, t (1.0ms/div)
Figure 26. Derating Output Current versus Local Ambient
Temperature and Airflow.
Figure 29. Transient Response to Dynamic Load Change from
50% to 75% to 50% of full load.
OUTPUT VOLTAGE,
V
O
(V) (50mV/div)
OUTPUT VOLTAGE
V
O
(V) (2V/div)
TIME, t (1s/div)
TIME, t (100s/div)
Figure 27. Typical Output Ripple and Noise, VIN=V
IN, nom
IO=80% of I
O, max.
Figure 30. Typical Start-Up Output Voltage Rise Characteristic.
Characteristic Curves (continued)
The following figures provide typical characteristics for the SC001A2B91 (12.0V, 1.2A) at 25ºC. The figures are identical for either
positive or negative Remote On/Off logic.
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Figure 34. Typical Start-Up Using Remote On/Off, negative
logic version shown.
OUTPUT CURRENT, Io (A)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0102030405060708090 100 110
3.0 m/s (600 ft./min.)
2.0 m/s (400 ft./min.)
1.0 m/s (200 ft./min.)
Natural Convection
OUTPUT VOLTAGE, OUTPUT CURRENT
V
O
(V) (50mV/div), I
O
(A) (0.2A/div)
AMBIENT TEMPERATURE, TA OC
TIME, t (1.0ms/div)
Figure 32. Derating Output Current versus Local Ambient
Temperature and Airflow.
Figure 35. Transient Response to Dynamic Load Change from
50% to 75% to 50% of full load.
OUTPUT VOLTAGE,
V
O
(V) (20mV/div)
OUTPUT VOLTAGE
V
O
(V) (1V/div)
TIME, t (1s/div)
TIME, t (100s/div)
Figure 33. Typical Output Ripple and Noise, VIN=V
IN, nom
IO=80% of I
O, max.
Figure 36. Typical Start-Up Output Voltage Rise Characteristic.
Characteristic Curves (continued)
The following figures provide typical characteristics for the SC003A0A91 (5.0V, 3A) at 25ºC. The figures are identical for either
positive or negative Remote On/Off logic.
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Figure 40. Typical Start-Up Using Remote On/Off, negative
logic version shown.
OUTPUT CURRENT, Io (A)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0102030405060708090 100 110
3.0 m/s (600 ft./min.)
2.0 m/s (400 ft./min.)
1.0 m/s (200 ft./min.)
Natural Convection
OUTPUT VOLTAGE, OUTPUT CURRENT
V
O
(V) (50mV/div), I
O
(A) (0.2A/div)
AMBIENT TEMPERATURE, TA OC
TIME, t (1.0ms/div)
Figure 38. Derating Output Current versus Local Ambient
Temperature and Airflow.
Figure 41. Transient Response to Dynamic Load Change from
50% to 75% to 50% of full load.
OUTPUT VOLTAGE,
V
O
(V) (20mV/div)
OUTPUT VOLTAGE
V
O
(V) (1V/div)
TIME, t (2s/div)
TIME, t (50s/div)
Figure 39. Typical Output Ripple and Noise, VIN=V
IN, nom
IO=80% of I
O, max.
Figure 42. Typical Start-Up Output Voltage Rise
Characteristic.
Characteristic Curves (continued)
The following figures provide typical characteristics for the SC003A5F91 (3.3V, 3.5A) at 25ºC. The figures are identical for either
positive or negative Remote On/Off logic.
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
NOTE: Measure input reflected ripple current with a simulated
source inductance (L
TEST
) of 12μH. Capacitor CS offsets
possible battery impedance. Measure current as shown
above.
NOTE: All voltage measurements to be taken at the module
terminals, as shown above. If sockets are used then
Kelvin connections are required at the module terminals
to avoid measurement errors due to socket contact
resistance.
V
O
(+)
V
O
( – )
1uF .
RESISTIVE
LOAD
SCOPE
COPPER STRIP
GROUND PLANE
10uF
Vout+
Vout-
Vin+
Vin-
R
LOAD Rcontact Rdistribution
R
contact Rdistribution Rcontact
R
contact Rdistribution
R
distribution
V
IN VO
NOTE: All voltage measurements to be taken at the module
terminals, as shown above. If sockets are used then
Kelvin connections are required at the module terminals
to avoid measurement errors due to socket contact
resistance.
=
VO.
I
O
VIN.
I
IN
x 100 % Efficiency
Test Configurations
Design Considerations
Input Source Impedance
The power module should be connected to a low
ac-impedance source. Highly inductive source impedance can
affect the stability of the power module. For the test
configuration in Figure 43, a 33μF electrolytic capacitor
(ESR<0.7 at 100kHz), mounted close to the power module
helps ensure the stability of the unit. Consult the factory for
further application guidelines.
Safety Considerations
For safety-agency approval of the system in which the power
Figure 43. Input Reflected Ripple Current Test Setup.
Figure 44. Output Ripple and Noise Test Setup.
Figure 45. Output Voltage and Efficiency Test Setup.
module is used, the power module must be installed in
compliance with the spacing and separation requirements of
the end-use safety agency standard, i.e., UL 60950-1-3, CSA
C22.2 No. 60950-00, and VDE 0805 (IEC60950, 3rd Edition).
If the input source is non-SELV (ELV or a hazardous voltage
greater than 60 Vdc and less than or equal to 75Vdc), for the
module’s output to be considered as meeting the requirements
for safety extra-low voltage (SELV), all of the following must be
true:
The input source is to be provided with reinforced
insulation from any other hazardous voltages, including
the ac mains.
One V
pin and one V
IN
pin are to be grounded, or both
OUT
the input and output pins are to be kept floating.
The input pins of the module are not operator accessible.
Another SELV reliability test is conducted on the whole
system (combination of supply source and subject
module), as required by the safety agencies, to verify that
under a single fault, hazardous voltages do not appear at
the module’s output.
Note: Do not ground either of the input pins of the module
without grounding one of the output pins. This may
allow a non-SELV voltage to appear between the output
pins and ground.
The power module has extra-low voltage (ELV) outputs when all
inputs are ELV.
For input voltages exceeding –60 Vdc but less than or equal to
–75 Vdc, these converters have been evaluated to the
applicable requirements of BASIC INSULATION between
secondary DC MAINS DISTRIBUTION input (classified as TNV-2
in Europe) and unearthed SELV outputs.
The input to these units is to be provided with a maximum 3A
time-delay fuse in the ungrounded lead.
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Two remote on/off options are available. Positive logic turns
the module on during a logic high voltage on the ON/OFF pin,
and off during a logic low. Negative logic remote On/Off, device
code suffix “1”, turns the module off during a logic high and on
during a logic low.
To maintain compatibility with LW series power modules the
Remote On/Off pin is optional for the TH (through hole) version.
Standard TH modules have no On/Off pin fitted. TH modules
ordered with device code suffix “1” are negative logic with the
On/Off pin fitted. The On/Off pin shall always be fitted on SMT
versions.
operate once the input voltage is raised above the
undervoltage lockout turn-on threshold, V
UV/ON
.
Once operating, the module will continue to operate until the
input voltage is taken below the undervoltage turn-off
threshold, V
UV/OFF
.
Over Voltage Protection
The output overvoltage protection consists of circuitry that
internally clamps the output voltage. If a more accurate output
overvoltage protection scheme is required then this should be
implemented externally via use of the remote on/off pin.
Output Voltage Programming
Trimming allows the user to increase or decrease the output
voltage set point of the module. This is accomplished by
connecting an external resistor between the TRIM pin and
either the Vout+ pin or the Vout- pin.
Note: Trim pin is optional on TH module version and always
present on SMT versions.
Trim Down – Decrease Output Voltage
By connecting an external resistor between the TRIM pin and
Vout+ pin (Radj-down), the output voltage set point decreases
(see figure 17). The following equation determines the external
resistor value to obtain an output voltage change from Vo,
nom to the desired Vo, adj:
Figure 46. Circuit configuration for using Remote On/Off
Implementation.
To turn the power module on and off, the user must supply a
switch (open collector or equivalent) to control the voltage
(V
) between the ON/OFF terminal and the VIN(-) terminal.
on/off
Logic low is 0V ≤ V
≤ 1.2V. The maximum I
on/off
on/off
during a
logic low is 1mA, the switch should be maintain a logic low
level whilst sinking this current.
During a logic high, the typical V
is 5.8V, and the maximum allowable leakage current at V
generated by the module
on/off
on/off
5.8V is 50μA.
If not using the remote on/off feature:
For positive logic, leave the ON/OFF pin open.
For negative logic, short the ON/OFF pin to VIN(-).
Overcurrent Protection
To provide protection in a fault (output overload) condition, the
unit is equipped with internal current-limiting circuitry and can
endure current limiting continuously. At the point of
current-limit inception, the unit enters hiccup mode. The unit
operates normally once the output current is brought back into
its specified range. The average output current during hiccup is
10% I
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout limit,
the module operation is disabled. The module will only begin to
O, max
.
Note: Values for G, H, L and K are defined for each module
version in the following table 1.
=
Figure 17. Circuit Configuration to Decrease Output Voltage.
Trim Up – Increase Output Voltage
By connecting an external resistor between the TRIM pin and
Vout- pin (Radj-up), the output voltage set point increases (see
figure 48). The following equation determines the external
resistor value to obtain an output voltage change from Vo,
nom to the desired Vo, adj:
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Note: Values for G, H, L and K are defined for each module
version in the following table 1.
Figure 48. Circuit Configuration to Increase Output Voltage.
Table 1. Trim Constants SW series
The combination of the output voltage adjustment and the
output voltage initial tolerance must not exceed the allowable
trim range of 90% to 110% of the nominal output voltage as
measured between the Vout+ and Vout- pins.
The SW/SC power modules have a fixed current-limit set point.
Therefore, as the output voltage is adjusted down, the available
output power is reduced.
Trim Examples
For SW003A0A, nominal 5.0V module. To trim module down to
4.90V:
Considerations include ambient temperature, airflow, module
power dissipation, and the need for increased reliability. A
reduction in the operating temperature of the module will
result in an increase in reliability. The thermal data presented
here is based on physical measurements taken in a wind
tunnel.
The thermal reference point, T
shown in Figure 49. For reliable operation this temperature
should not exceed 120oC.
Figure 49. T
Temperature Measurement Location.
ref
used in the specifications is
ref
Heat Transfer via Convection
Increased airflow over the module enhances the heat transfer
via convection. Derating figures showing the maximum output
current that can be delivered by each module versus local
ambient temperature (TA) for natural convection and up to
3m/s (600 ft./min) are shown in the respective Characteristics
Curves section.
Please refer to the Application Note “Thermal Characterization
Process For Open-Frame Board-Mounted Power Modules” for a
detailed discussion of thermal aspects including maximum
device temperatures.
EMC Considerations
Figure 50 shows a suggested configuration to meet the
conducted emission limits of EN55022 Class B.
Notes: C1, C2, C3 and C6 are low impedance SMT ceramics. C4
is a low impedance polymer film type (Paktron CS4). Common
Mode inductor is Pulse Engineering type P0354 1.17mH.
Thermal Considerations
The power modules operate in a variety of thermal
environments; however, sufficient cooling should be provided
to help ensure reliable operation.
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Figure 50. Suggested Configuration for EN55022 Class B.
that the temperature of the power module board is kept below
210C. For Pb solder, the recommended pot temperature is
260C, while the Pb-free solder pot is 270C max. Not all RoHS-
compliant through-hole products can be processed with pastethrough-hole Pb or Pb-free reflow process. If additional
information is needed, please consult with your GEPower
representative for more details.
Surface Mount Information
Pick and Place
The SW/SC-SR series of DC-to-DC power converters use an
open-frame construction and are designed for surface mount
assembly within a fully automated manufacturing process.
The SW/SC-SR series modules are designed to use the main
magnetic component surface to allow for pick and place.
Figure 51. EMC signature using above filter, SW003A0A.
For further information on designing for EMC compliance,
please refer to the FLTR100V10 data sheet (FDS01-043EPS).
Layout Considerations
The SW/SC power module series are low profile in order to be
used in fine pitch system card architectures. As such,
component clearance between the bottom of the power
Note: All dimensions in mm.
Figure 52. Pick and Place Location.
Z Plane Height
The ‘Z’ plane height of the pick and place location is 7.50mm
nominal with an RSS tolerance of +/-0.25 mm.
module and the mounting board is limited. Avoid placing
copper areas on the outer layer directly underneath the power
module. Also avoid placing via interconnects underneath the
power module.
For additional layout guide-lines, refer to the FLTR100V10 data
sheet.
Nozzle Recommendations
The module weight has been kept to a minimum by using open
frame construction. Even so, they have a relatively large mass
when compared with conventional SMT components.
Variables such as nozzle size, tip style, vacuum pressure and
placement speed should be considered to optimize this
The SW/SC family of power modules is available for either
Through-Hole (TH) or Surface Mount (SMT) soldering.
process.
The minimum recommended nozzle diameter for reliable
operation is 5mm. The maximum nozzle outer diameter, which
Through-Hole Soldering Information
will safely fit within the allowable component spacing, is
6.5mm.
The RoHS-compliant (Z codes) through-hole products use the
SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant
components. They are designed to be processed through
single or dual wave soldering machines. The pins have an
RoHS-compliant finish that is compatible with both Pb and Pbfree wave soldering processes. A maximum preheat rate of
3C/s is suggested. The wave preheat process should be such
Oblong or oval nozzles up to 11 x 6 mm may also be used
within the space available.
For further information please contact your local GE Sales
Representative.
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Figure 54. Recommended Reflow Profile for Sn/Pb solder.
REFLOW TEMP (C)
REFLOW TIME (S)
Reflow Soldering Information
These power modules are large mass, low thermal
resistance devices and typically heat up slower than other
SMT components. It is recommended that the customer
review data sheets in order to customize the solder reflow
profile for each application board assembly.
The following instructions must be observed when SMT
soldering these units. Failure to observe these instructions
may result in the failure of or cause damage to the modules,
and can adversely affect long-term reliability.
Surface Mount Information (continued)
The surface mountable modules in the SW/SC family use our
SMT technology called “Column Pin” (CP) connectors. Figure
53 shows the CP connector before and after reflow soldering
onto the end-board assembly.
Figure 53. Column Pin Connector Before and After Reflow
Soldering.
The CP is constructed from a solid copper pin with an integral
solder ball attached, which is composed of tin/lead (Sn63/Pb37)
solder for non-Z codes, or Sn/Ag
codes. The CP connector design is able to compensate for
large amounts of co-planarity and still ensure a reliable SMT
solder joint. Typically, the eutectic solder melts at 183oC (Sn/Pb
solder) or 217-218 oC (SAC solder), wets the land, and
subsequently wicks the device connection. Sufficient time
must be allowed to fuse the plating on the connection to
ensure a reliable solder joint.
/Cu
(SAC) solder for –Z
3.8
0.7
There are several types of SMT reflow technologies currently
used in the industry. These surface mount power modules can
be reliably soldered using natural forced convection, IR (radiant
infrared), or a combination of convection/IR. The
recommended linear reflow profile using Sn/Pb solder is shown
in Figure 54 and 55. For reliable soldering the solder reflow
profile should be established by accurately measuring the
modules CP connector temperatures.
Lead Free Soldering
The –Z version SMT modules of the SW/SC series are lead-free
(Pb-free) and RoHS compliant and are compatible in a Pb-free
soldering process. Failure to observe the instructions below
may result in the failure of or cause damage to the modules
and can adversely affect long-term reliability
Figure 55. Time Limit, T
Pb-free Reflow Profile
Power Systems will comply with J-STD-020 Rev. D
(Moisture/Reflow Sensitivity Classification for Nonhermetic
Solid State Surface Mount Devices) for both Pb-free solder
profiles and MSL classification procedures. This standard
provides a recommended forced-air-convection reflow profile
based on the volume and thickness of the package (table 4-2).
The suggested Pb-free solder paste is Sn/Ag/Cu (SAC). The
recommended linear reflow profile using Sn/Ag/Cu solder is
shown in Figure. 56.
, Curve Above 205oC Reflow .
lim
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Figure 56. Recommended linear reflow profile using
Sn/Ag/Cu solder.
MSL Rating
The SW/SC series SMT modules have a MSL rating of 2A.
Storage and Handling
The recommended storage environment and handling
procedures for moisture-sensitive surface mount packages is
detailed in J-STD-033 Rev. A (Handling, Packing, Shipping and
Use of Moisture/Reflow Sensitive Surface Mount Devices).
Moisture barrier bags (MBB) with desiccant are required for
MSL ratings of 2 or greater. These sealed packages should not
be broken until time of use. Once the original package is
broken, the floor life of the product at conditions of 30°C and
60% relative humidity varies according to the MSL rating (see
J-STD-033A). The shelf life for dry packed SMT packages will be
a minimum of 12 months from the bag seal date, when stored
at the following conditions: < 40° C, < 90% relative humidity.
Post Solder Cleaning and Drying Considerations
Post solder cleaning is usually the final circuit-board assembly
process prior to electrical board testing. The result of
inadequate cleaning and drying can affect both the reliability
of a power module and the testability of the finished
circuit-board assembly. For guidance on appropriate soldering,
cleaning and drying procedures, refer to Lineage Power Board
Mounted Power Modules: Soldering and Cleaning Application
Note (AN04-001).
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Dimensions are in millimeters and (inches).
Tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) [Unless otherwise indicated]
x.xx mm 0.25 mm (x.xxx in 0.010 in.)
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
*For optional pin lengths, see Table 3, Device Options
Bottom View
(0.400)
(0.08)
2.0
3.8
20.32
(0.800)
(0.15)
(0.300)
7.62
12.70
(0.500)
4
5
6
1
2
3
20.32
(0.800)
10.16
Pin
Function
1
Vin +
2
Vin -
3
ON/OFF
(Optional)
4
Vout +
5
TRIM
(Optional)
6
Vout -
Mechanical Outline for SW/SC Through Hole Module
Dimensions are in millimeters and (inches).
Tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) [Unless otherwise indicated]
x.xx mm 0.25 mm (x.xxx in 0.010 in.)
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Mechanical Outline for SW/SC -35 Option Through Hole Module
Dimensions are in millimeters and (inches).
Tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) [Unless otherwise indicated]
x.xx mm 0.25 mm (x.xxx in 0.010 in.)
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Recommended Pad Layout for Surface Mount and Through Hole Module
Dimensions are in millimeters and (inches).
Tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) [Unless otherwise indicated]
x.xx mm 0.25 mm (x.xxx in 0.010 in.)
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Outside Diameter: 330.2 mm (13.00”)
Inside Diameter: 177.8 mm (7.00”)
Tape Width: 44.00 (1.732)
Packaging Details
The SW001/003 series SMT versions are supplied in tape & reel as standard. Details of tape dimensions are shown below. Modules
are shipped in quantities of 150 modules per reel.
GE
Data Sheet
SW/SC001/003 Series DC-DC Power Module
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
Mechanically Trimmed Short Pins, 3.68 mm ± 0.25mm (0.145 in. ± 0.010 in.)
6
Output Voltage Adjustment (Trim pin fitted) †
9
Uncut Short Pins, 3.68 mm ± 0.25mm (0.145 in. ± 0.020 in.)
-35
Surface mount connections, SMT (Tape & Reel)
-SR
RoHS Compliant
-Z
Table 3. Device Options
* Please contact GE Sales Representative for availability of these options, samples, minimum order quantity and lead times. Legacy
device codes may contain a –B option suffix to indicate 100% factory Hi-Pot tested to the isolation voltage specified in the
Absolute Maximum Ratings table. The 100% Hi-Pot test is now applied to all device codes, with or without the –B option suffix.
Existing comcodes for devices with the –B suffix are still valid; however, no new comcodes for devices containing the –B suffix will
be created.
** When adding multiple options to the product code, add numerical suffix codes in the descending order.
† Either negative or positive logic (1 or 4), and output voltage adjustment (trim, 9) must be ordered on surface mount , SMT (-SR)
device codes. Both the on/off pin and trim pin will be provided on all –SR device codes.
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