BEL SLIN

NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
SLIN-06F1Ax
RoHS Compliant
Rev.B
Features
•
Wide Input Voltage Range
•
Ability to Sink and Source Current
•
Fixed Switching Frequency
•
Cost Efficient Open Frame Design
•
Remote Sense
•
Over Temperature Protection
•
•
•
Remote On/Off
• Output Over Current Protection
TM
Tunable Loop (a registered trademark of Lineage Power Systems) to
Optimize Dynamic output voltage response
Flexible output voltage sequencing
•
Class 1, Category 2, Non-Isolated DC/DC Converter (refer to IPC-9592)
•
Compliant to RoHS EU Directive 2002/95/EC
•
Compatible in a Pb-free or SnPb reflow environment
•
UL* 60950-1Recognized, CSA† C22.2 No. 60950-1-03 Certified
•
VDE‡ 0805:2001-12 (EN60950-1) Licensed
Applications
•
•
•
Distributed power architectures
Intermediate bus voltage applications
Telecommunications equipment
•
•
•
Servers and storage applications
Networking equipment
Industrial equipment
Description
The SLIN-06F1Ax power modules are non-isolated dc-dc converters that can deliver up to 6A of output current.
These modules operate over a wide range of input voltage (VIN=2.4Vdc-5.5Vdc) and provide a precisely
regulated output voltage from 0.6Vdc to 3.63Vdc, programmable via an external resistor. Features include
remote On/Off, adjustable output voltage, over current and over temperature protection, and output voltage
sequencing. A new feature, the Tunable LoopTM, allows the user to optimize the dynamic response of the
converter to match the load with reduced amount of output capacitance leading to savings on cost and PWB
area.
Part Selection
Output Voltage
Input Voltage
0.6 Vdc - 3.63 Vdc
2.4 Vdc - 5.5 Vdc
Max. Output
Current
6A
Typical
Efficiency
91%
Model Number
Active High
SLIN-06F1A0
Model Number
Active Low
SLIN-06F1AL
Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging.
Part Number Explanation
S LIN – 06 F 1A 0
1
2
3
4
5
6
1---Surface mount
2---Series code
3---Output current (6A)
4--- Wide input voltage range (2.4-5.5V)
5--- Wide output voltage range (0.6-3.63V)
6--- Enable, active high, change “0” to “L” means active low
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
1
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Absolute Maximum Ratings
Min
Typ
Max
Unit
Continuous Input Voltage
-0.3
-
6
V
Sequencing Voltage
-0.3
-
Vin
V
Operating Ambient Temperature
-40
-
85
°C
Storage Temperature
-55
-
125
°C
Parameter
Notes
Note: 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.
Input Specifications
Parameter
Operating Input Voltage
Min
2.4
Typ
-
Max
5.5
Unit
V
Notes
Input Current (full load)
-
-
6.5
A
-
30
75
-
mA
mA
-
2.2
-
mA
VIN = 5.0Vdc, module disabled
5Hz to 20MHz, 1μH source
impedance; VIN =0 to 5.5V, IO= IOmax ;
See Test Configurations
VIN=2.4V to 5.5V
Input Current (no load)
Vo=0.6V
Vo=3.3V
Input Stand-by Current
Input Reflected Ripple Current
(pk-pk)
-
25
-
mA
I2t Inrush Current Transient
-
-
1
A2s
Input Ripple Rejection (120Hz)
-
40
-
dB
Turn-on Threshold
-
-
2.2
V
Turn-off Threshold
1.75
-
-
V
Hysteresis
0.08
-
0.2
V
VIN=5.0V, module enabled
CAUTION: This converter is not internally fused. An input line fuse must be used in application.
This power module can be used in a wide variety of applications, ranging from simple standalone operation to
an integrated part of sophisticated 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 6A. 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.
Note: Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and
temperature conditions.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
2
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Output Specifications
Parameter
Min
Typ
Max
Unit
Output Voltage Set Point
-1.5
-
+1.5
%Vo,set
Output Voltage
-3.0
-
+3.0
%Vo,set
Adjustment Range1
0.6
-
3.63
V
-
-
0.5
V
VO ≥ 2.5V
VO < 2.5V
-
-
10
5
mV
mV
VO ≥ 2.5V
VO < 2.5V
-
-
0.4
10
%Vo,set
mV
Temperature Regulation
(-40°C to +85°C)
-
-
0.4
%Vo,set
Ripple and Noise (pk-pk)
-
25
35
mV
Ripple and Noise (rms)
-
10
15
mV
Output Current Range
0
-
6
A
Output DC Current Limit
-
-
200
%Io,max
Output Short-Circuit Current
-
0.23
-
A
Vo≤250mV, Hiccup Mode
0
0
0
-
47
1000
3000
uF
uF
uF
-
2
-
mS
-
2
-
mS
Without the Tunable LoopTM
TM
With the Tunable Loop
With the Tunable LoopTM
Case 1: On/Off input is enabled and then
input power is applied (delay from instant
at which VIN = VIN, min until Vo =10% of
Vo, set)
Case 2: Input power is applied for at least
one second and then the On/Off input is
enabled (delay from instant at which
Von/Off is enabled until Vo =10% of Vo,
set)
Output voltage Rise time
-
5
-
mS
Output voltage overshoot
-
-
3
%Vo,set
Remote Sense Range
Notes
with 0.5% tolerance for external resistor
used to set output voltage
Over all operating input voltage, resistive
load, and temperature conditions until end
of life
selected by an external resistor
Load Regulation
IO=IO, min to IO, max
Line Regulation
VIN=VIN, min to VIN, max
5Hz to 20MHz BW, VIN=VIN, nom and IO=IO,
min to IO, max Co = 0.1μF // 10 μF ceramic
capacitors)
Hiccup Mode
1
Output Capacitance
ESR≥ 1 mΩ
ESR≥0.15 mΩ
ESR≥ 10 mΩ
Turn-On Delay Time
time for Vo to rise from10% of Vo, set to
90% of Vo, set
Vin=Vin, min to Vin, max, Io=Io, min to Io,
max, With or without maximum external
capacitance
Dynamic Load Response
△V0%~50% of
Max Load
△V50%~0% of
Max Load
Peak Deviation
-
180
-
mV
Settling Time
-
20
-
uS
Peak Deviation
-
170
-
mV
Settling Time
-
20
-
uS
di/dt=10A/us, Vin=5V, Vo=1.8V, Ta=25°C,
Co=0
Notes: 1. External capacitors may require using the new Tunable LoopTM feature to ensure that the module is
stable as well as getting the best transient response (See the Tunable LoopTM section for details).
2. Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and
temperature conditions.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
3
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
General Specifications
Parameter
Min
Typ
Max
Unit
-
72.3
82.7
87.7
91.4
93.0
-
%
%
%
%
%
Switching Frequency
-
600
-
kHz
Over Temperature Protection
-
140
-
°C
10
-
-
msec
Tracking Accuracy
Power-Up: 2V/ms
Power-Down: 2V/ms
-
-
100
100
mV
mV
Weight
-
1.95
-
g
Notes
Efficiency
Vo=0.6V
Vo=1.2V
Vo=1.8V
Vo=2.5V
Vo=3.3V
Sequencing Delay time
MTBF
34,602,572
hours
0.48 x 0.48 x 0.29
12.19 x 12.19 x 7.25
-
Vin= 3.3Vdc, Ta=25°C
Io=Io, max , Vo= Vo,set.
When Vo=3.3V, Vin=5.0V
Delay from VIN, min to application of
voltage on SEQ pin
Vin, min to Vin, max; Io, min to Io,
max, Vseq < Vo
Calculated Per Bell Core SR-332
(Io=Io, max, Ta=40°C, Telecordia
Issue 2 Method 1 Case 3)
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
Note: Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and
temperature conditions.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
4
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Efficiency Data
95
86
84
90
EFFICIENCY, η (%)
EFFICIENCY, η (%)
82
80
78
76
Vin=2.4V
74
Vin=3.3V
72
Vin=5.5V
70
85
80
Vin=2.4V
Vin=3.3V
Vin=5.5V
75
70
0
1
2
3
4
5
6
0
1
OUTPUT CURRENT, IO (A)
2
3
4
5
6
OUTPUT CURRENT, IO (A)
Vo=0.6V
Vo=1.2V
100
95
95
EFFICIENCY, η (%)
EFFICIENCY, η (%))
90
Vin=2.4V
85
Vin=3.3V
Vin=5.5V
80
75
90
Vin=3V
85
Vin=3.3V
Vin=5.5V
80
75
70
70
0
1
2
3
4
5
6
OUTPUT CURRENT, IO (A)
0
1
2
3
4
5
6
OUTPUT CURRENT, IO (A)
Vo=1.8V
Vo=2.5V
100
EFFICIENCY, η (%))
95
90
Vin=5.5V
Vin=5V
85
Vin=4V
80
75
70
0
1
2
3
4
5
6
OUTPUT CURRENT, IO (A)
Vo=3.3V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
5
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
6.2
6.2
6.0
6.0
5.8
0.5m/s
(100LFM)
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, Io (A)
Thermal Derating Curves
NC
5.6
5.4
5.2
5.0
20
30
40
50
60
70
80
5.8
0.5m/s
(100LFM)
5.4
5.2
5.0
90
20
30
O
40
6.0
6.0
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, Io (A)
6.2
NC
5.6
5.4
5.2
5.0
40
50
70
80
90
80
90
Vo=1.2V
6.2
30
60
AMBIENT TEMPERATURE, TA C
Vo=0.6V
20
50
O
AMBIENT TEMPERATURE, TA C
5.8
NC
5.6
60
70
80
90
O
5.8
NC
5.6
5.4
5.2
5.0
20
30
40
50
60
70
O
AMBIENT TEMPERATURE, TA C
AMBIENT TEMPERATURE, TA C
Vo=1.8V
Vo=2.5V
OUTPUT CURRENT, Io (A)
6.2
6.0
5.8
NC
5.6
5.4
5.2
5.0
20
30
40
50
60
70
80
90
O
AMBIENT TEMPERATURE, TA C
Vo=3.3V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
6
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
OUTPUT VOLTAGE
VO (V) (20mV/div)
OUTPUT VOLTAGE
VO (V) (20mV/div)
Ripple and Noise Waveforms
TIME, t (1μs/div)
TIME, t (1μs/div)
Vin=5V, Vo=1.2V, Io = Io,max
OUTPUT VOLTAGE
VO (V) (20mV/div)
OUTPUT VOLTAGE
VO (V) (20mV/div)
Vin=5V, Vo=0.6V, Io = Io,max
TIME, t (1μs/div)
Vin=5V, Vo=2.5V, Io = Io,max
OUTPUT VOLTAGE
VO (V) (20mV/div)
Vin=5V, Vo=1.8V, Io = Io,max
TIME, t (1μs/div)
TIME, t (1μs/div)
Vin=5V, Vo=3.3V, Io = Io,max
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
7
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
OUTPUT VOLTAGE
VO (V) (100mV/div)
TIME, t (20μs /div)
Transient Response to Dynamic Load Change from
0% to 50% to 0%. Vin=5V, Vo=1.2V
OUTPUT VOLTAGE
VO (V) (200mV/div)
OUTPUT VOLTAGE
VO (V) (100mV/div)
OUTPUT CURRENT,
IO (A) (2A/div)
OUTPUT CURRENT,
IO (A) (2A/div)
TIME, t (20μs /div)
Transient Response to Dynamic Load Change from
0% to 50% to 0%. Vin=5V, Vo=0.6V
TIME, t (20μs /div)
TIME, t (20μs /div)
Transient Response to Dynamic Load Change from
0% to 50% to 0%. Vin=5V, Vo=2.5V
OUTPUT CURRENT,
IO (A) (2A/div)
OUTPUT VOLTAGE
VO (V) (200mV/div)
Transient Response to Dynamic Load Change from
0% to 50% to 0%. Vin=5V, Vo=1.8V
OUTPUT CURRENT,
IO (A) (2A/div)
OUTPUT CURRENT,
IO (A) (2A/div)
OUTPUT VOLTAGE
VO (V) (100mV/div)
Transient Response Waveforms
TIME, t (20μs /div)
Transient Response to Dynamic Load Change from
0% to 50% to 0%. Vin=5V, Vo=3.3V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
8
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
ON/OFF VOLTAGE OUTPUT VOLTAGE
VON/OFF (V) (2V/div) VO (V) (500mV/div)
Start-up Using On/Off Voltage (Io = Io,max), Vo=0.6V
TIME, t (1 ms/div)
ON/OFF VOLTAGE OUTPUT VOLTAGE
VO (V) (1V/div)
VON/OFF (V) (2V/div)
Start-up Using On/Off Voltage (Io = Io,max), Vo=1.8V
ON/OFF VOLTAGE OUTPUT VOLTAGE
VO (V) (500mV/div)
VON/OFF (V) (2V/div)
TIME, t (1 ms/div)
TIME, t (1 ms/div)
Start-up Using On/Off Voltage (Io = Io,max), Vo=1.2V
ON/OFF VOLTAGE OUTPUT VOLTAGE
VO (V) (1V/div)
VON/OFF (V) (2V/div)
ON/OFF VOLTAGE OUTPUT VOLTAGE
VO (V) (200mV/div)
VON/OFF (V) (2V/div)
Startup Time
TIME, t (5 ms/div)
Start-up Using On/Off Voltage (Io = Io,max), Vo=2.5V
TIME, t (1 ms/div)
Start-up Using On/Off Voltage (Io = Io,max), Vo=3.3V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
9
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
INPUT VOLTAGE
OUTPUT VOLTAGE
VO (V) (1V/div)
VIN (V) (2V/div)
Start-up Using Input Voltage (VIN = 5V, Io = Io,max ),
Vo=0.6V
TIME, t (1 ms/div)
INPUT VOLTAGE
OUTPUT VOLTAGE
VO (V) (1V/div)
VIN (V) (2V/div)
Start-up Using Input Voltage (VIN = 5V, Io = Io,max ),
Vo=1.8V
INPUT VOLTAGE
OUTPUT VOLTAGE
VO (V) (500mV/div)
VIN (V) (2V/div)
TIME, t (1 ms/div)
TIME, t (1 ms/div)
Start-up Using Input Voltage (VIN = 5V, Io = Io,max ),
Vo=1.2V
INPUT VOLTAGE
OUTPUT VOLTAGE
VO (V) (1V/div)
VIN (V) (2V/div)
INPUT VOLTAGE
VIN (V) (2V/div)
OUTPUT VOLTAGE
VO (V) (200mV/div)
Startup Time (continued)
TIME, t (1 ms/div)
Start-up Using Input Voltage (VIN = 5V, Io = Io,max ),
Vo=2.5V
TIME, t (1 ms/div)
Start-up Using Input Voltage (VIN = 5V, Io = Io,max ),
Vo=3.3V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
10
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Test Configurations
Input Reflected Ripple Current Test Setup.
CURRENT PROBE
TO OSCILLOSCOPE
LTEST
VIN(+)
BATTERY
1μH
CIN
CS 1000μF
Electrolytic
2x100μF
Tantalum
E.S.R.<0.1Ω
@ 20°C 100kHz
COM
NOTE: Measure input reflected ripple current with a simulated
source inductance (LTEST) of 1μH. Capacitor CS offsets
possible battery impedance. Measure current as shown
above.
Output Ripple and Noise Test Setup
COPPER STRIP
RESISTIVE
LOAD
Vo+
0.1uF
10uF
COM
SCOPE USING
BNC SOCKET
GROUND PLANE
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.
Output Voltage and Efficiency Test Setup
Rdistribution
Rcontact
Rcontact
VIN(+)
RLOAD
VO
VIN
Rdistribution
Rcontact
Rcontact
COM
Rdistribution
VO
Rdistribution
COM
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. IO
Efficiency
η =
VIN. IIN
x
100 %
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
11
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Input Filtering
The SLIN-06F1Ax modules should be connected to a low ac-impedance source. A highly inductive source can
affect the stability of the module. Input capacitance must be placed directly adjacent to the input pin of the
module, to minimize input ripple voltage and ensure module stability.
To minimize input voltage ripple, ceramic capacitors are recommended at the input of the module. Figure A
below shows the input ripple voltage for various output voltages at 6A of load current with 1x22µF or 2x22µF
ceramic capacitors and an input of 5V. Figure B shows data for the 3.3Vin case, with 1x22µF or 2x22µF of
ceramic capacitors at the input.
120
100
80
60
40
1x22uF
20
2x22uF
0
0.5
1
1.5
2
2.5
Output Voltage (Vdc)
Figure A
3
3.5
Input Ripple Voltage (mVp-p)
Input Ripple Voltage (mVp-p)
120
100
80
60
40
1x22uF
20
2x22uF
0
0.5
1
1.5
2
2.5
3
Output Voltage (Vdc)
Figure B
Output Filtering
The SLIN-06F1Ax modules are designed for low output ripple voltage and will meet the maximum output ripple
specification with 0.11 µF ceramic and 10 µF ceramic capacitors at the output of the module. However,
additional output filtering may be required by the system designer for a number of reasons. First, there may be
a need to further reduce the output ripple and noise of the module. Second, the dynamic response
characteristics may need to be customized to a particular load step change.
To reduce the output ripple and improve the dynamic response to a step load change, additional capacitance at
the output can be used. Low ESR polymer and ceramic capacitors are recommended to improve the dynamic
response of the module. Figure A on the next page provides output ripple information for different external
capacitance values at various Vo and for a load current of 6A while maintaining an input voltage of 5V. Figure B
shows the performance with a 3.3V input. For stable operation of the module, limit the capacitance to less than
the maximum output capacitance as specified in the electrical specification table. Optimal performance of the
module can be achieved by using the Tunable LoopTM feature described later in this data sheet.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
12
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Output Filtering (continued)
25
20
20
15
Ripple(mVp-p)
Ripple(mVp-p)
15
1x10uF External Cap
1x47uF External Cap
2x47uF External Cap
4x47uF External Cap
10
1x10uF External Cap
1x47uF External Cap
2x47uF External Cap
4x47uF External Cap
10
5
5
0
0.5
1
1.5
2
2.5
3
3.5
Output Voltage(Volts)
Figure A Output ripple voltage for various output
voltage at Vin=5V, 6A load
0
0.5
1
1.5
2
Output Voltage(Volts)
2.5
3
Figure B Output ripple voltage for various output voltage
at Vin=3.3V, 6A load
Safety Considerations
For safety agency approval the power module must be installed in compliance with the spacing and separation
requirements of the end-use safety agency standards, i.e., UL 60950-1, CSA C22.2 No. 60950-1-03, and VDE
0850:2001-12 (EN60950-1) Licensed.
For the converter output to be considered meeting the requirements of safety extra-low voltage (SELV), the
input must meet SELV requirements. The power module has extra-low voltage (ELV) outputs when all inputs
are ELV.
The input to these units is to be provided with a fast-acting fuse with a maximum rating of 6A in the positive
input lead.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
13
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Remote On/Off
Parameter
Signal Low (Unit On)
Signal High (Unit Off)
Signal Low (Unit Off)
Signal High (Unit On)
Active Low
Min
-0.2
Typ
-
Max
Vin-1.6
Unit
V
Vin-0.8
-
Vin,max
V
-0.3
-
0.3
V
1.2
-
Vin,max
V
Active High
Notes
The remote on/off pin open, Unit on.
The remote on/off pin open, Unit on.
The SLIN-06F1Ax modules feature an On/Off pin for remote On/Off operation. Two On/Off logic options are
available. In the Positive Logic On/Off option, the module turns ON during a logic High on the On/Off pin and
turns OFF during a logic Low. With the Negative Logic On/Off option, the module turns OFF during logic High
and ON during logic Low. The On/Off signal is always referenced to ground. For either On/Off logic option,
leaving the On/Off pin disconnected will turn the module ON when input voltage is present.
For positive logic modules, the circuit configuration for using the On/Off pin is shown in the figure below. When
the external transistor Q1 is in the OFF state, Q2 is ON, the internal PWM Enable signal is pulled low and the
module is ON. When transistor Q1 is turned ON, the On/Off pin is pulled low, Q2 is turned off and the internal
PWM Enable signal is pulled high through the 100K internal pull-up resistor and the module is OFF.
VIN+
MODULE
100K
20K
PWM Enable
I ON/OFF
ON/OFF
Q2
+
Q1
VON/OFF
20K
_
GND
Circuit configuration for using positive On/Off logic
For negative logic On/Off modules, the circuit configuration is shown below. The On/Off pin should be pulled
high with an external pull-up resistor (suggested value for the 2.4V to 5.5V input range is 3.6Kohms). When
transistor Q1 is in the OFF state, the On/Off pin is pulled high and the module is OFF. The On/Off threshold for
logic High on the On/Off pin depends on the input voltage and its minimum value is VIN – 1.6V. To turn the
module ON, Q1 is turned ON pulling the On/Off pin low.
VIN+
MODULE
Rpullup
100K
I ON/OFF
ON/OFF
+
VON/OFF
Q1
GND
2.05K
PWM Enable
20K
_
Circuit configuration for using negative On/Off logic
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
14
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Over Current 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.
Over Temperature Protection
To provide protection in a fault condition, the unit is equipped with a thermal shutdown circuit. The unit will
shutdown if the over temperature threshold of 140°C is exceeded at the thermal reference point Tref. The
thermal shutdown is not intended as a guarantee that the unit will survive temperatures beyond its rating. Once
the unit goes into thermal shutdown it will then wait to cool before attempting to restart.
Input Under-voltage Lockout
At input voltages below the input under voltage lockout limit, the module operation is disabled. The module will
begin to operate at an input voltage above the under voltage lockout turn-on threshold.
Output Voltage Programming
The output voltage of the SLIN-06F1Ax module can be programmed to any voltage from 0.6dc to 3.63Vdc by
connecting a resistor between the Trim and GND pins of the module. Certain restrictions apply on the output
voltage set point depending on the input voltage. These are shown in the Output Voltage vs. Input Voltage Set
Point Area plot below. The Upper Limit curve shows that the entire output voltage range is available with the
maximum input voltage of 5.5V. The Lower Limit curve shows that for output voltages of 1.8V and higher, the
input voltage needs to be larger than the minimum of 2.4V.
6
Input Voltage (v)
5
Upper Limit
4
3
Lower Limit
2
1
0
0.5
1
1.5
2
2.5
3
3.5
4
Output Voltage (V)
Output Voltage vs. Input Voltage Set Point Area plot showing limits where the output voltage can be set for
different input voltages.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
15
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Output Trim Equations
Without an external resistor between Trim and GND pins, the output of the module will be 0.6Vdc. To calculate
the value of the trim resistor, Rtrim, for a desired output voltage, use the following equation:
⎡ 1.2 ⎤
Rtrim = ⎢
⎥ kΩ
⎣ (Vo − 0.6 ) ⎦
Rtrim is the external resistor in kΩ
Vo is the desired output voltage.
Table 1 provides Rtrim values required for some common output voltages.
Table 1
VO, set (V)
0.6
1.0
1.2
1.5
1.8
2.5
3.3
Rtrim
(KΩ)
Open
3.0
2.0
1.333
1.0
0.632
0.444
By using a ±0.5% tolerance trim resistor with a TC of ±25ppm, a set point tolerance of ±1.5% can be achieved
as specified in the electrical specification.
Circuit configuration for programming output voltage using an external resistor
Remote Sense
The SLIN-06F1Ax modules have a Remote Sense feature to minimize the effects of distribution losses by
regulating the voltage at the SENSE pin. The voltage between the SENSE pin and VOUT pin must not exceed
0.5V. Note that the output voltage of the module cannot exceed the specified maximum value. This includes the
voltage drop between the SENSE and Vout pins. When the Remote Sense feature is not being used, connect
the SENSE pin to the VOUT pin.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
16
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Voltage Margining
Output voltage margining can be implemented in the SLIN-06F1Ax modules by connecting a resistor, Rmargin-up,
from the Trim pin to the ground pin for margining-up the output voltage and by connecting a resistor, Rmargin-down,
from the Trim pin to output pin for margining-down.
Vo
Rmargin-down
MODULE
Q2
Trim
Rmargin-up
Rtrim
Q1
GND
Circuit Configuration for margining Output voltage
Monotonic Start-up and Shutdown
The SLIN-06F1Ax modules have monotonic start-up and shutdown behavior for any combination of rated input
voltage, output current and operating temperature range.
Startup into Pre-biased Output
The SLIN-06F1Ax modules can start into a prebiased output as long as the prebias voltage is 0.5V less than the
set output voltage. Note that prebias operation is not supported when output voltage sequencing is used.
Output Voltage Sequencing
The SLIN-06F1Ax modules include a sequencing feature that enables users to implement various types of
output voltage sequencing in their applications. This is accomplished via an additional sequencing pin. When
not using the sequencing feature, either tie the SEQ pin to VIN or leave it unconnected.
When an analog voltage is applied to the SEQ pin, the output voltage tracks this voltage until the output reaches
the set-point voltage. The final value of the SEQ voltage must be set higher than the set-point voltage of the
module. The output voltage follows the voltage on the SEQ pin on a one-to-one volt basis. By connecting
multiple the pins of modules together, all modules can track their output voltages to the voltage applied on the
SEQ pin.
For proper voltage sequencing, first, input voltage is applied to the module. The On/Off pin of the module is left
unconnected (or tied to GND for negative logic modules or tied to VIN for positive logic modules) so that the
module is ON by default.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
17
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Output Voltage Sequencing (continued)
After applying input voltage to the module, a minimum 10msec delay is required before applying voltage on the
SEQ pin. This delay gives the module enough time to complete its internal power-up soft-start cycle. During the
delay time, the SEQ pin should be held close to ground (nominally 50mV ± 20 mV). This is required to keep the
internal op-amp out of saturation thus preventing output overshoot during the start of the sequencing ramp. By
selecting resistor R1 (see figure below) according to the following equation
R1 =
24950
V IN − 0.05
ohms
the voltage at the sequencing pin will be 50mV when the sequencing signal is at zero.
MODULE
VIN+
499K
+
OUT
R1
SEQ
10K
-
GND
Circuit showing connection of the sequencing signal to the SEQ pin
After the 10msec delay, an analog voltage is applied to the SEQ pin and the output voltage of the module will
track this voltage on a one-to-one volt basis until the output reaches the set-point voltage. To initiate
simultaneous shutdown of the modules, the SEQ pin voltage is lowered in a controlled manner. The output
voltage of the modules tracks the voltages below their set-point voltages on a one-to-one basis. A valid input
voltage must be maintained until the tracking and output voltages reach ground potential.
When using the sequencing feature to control start-up of the module, pre-bias immunity during start-up is
disabled. The pre-bias immunity feature of the module relies on the module being in the diode-mode during
start-up. When using the sequencing feature, modules goes through an internal set-up time of 10msec, and will
be in synchronous rectification mode when the voltage at the SEQ pin is applied. This will result in the module
sinking current if a pre-bias voltage is present at the output of the module. When pre-bias immunity during startup is required, the sequencing feature must be disabled. For additional guidelines on using the sequencing
feature please contact the Bel Power technical representative for additional information.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
18
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Tunable LoopTM
The SLIN-06F1Ax modules have a new feature that optimizes transient response of the module called Tunable
LoopTM.
External capacitors are usually added to the output of the module for two reasons: to reduce output ripple and
noise and to reduce output voltage deviations from the steady-state value in the presence of dynamic load
current changes. Adding external capacitance however affects the voltage control loop of the module, typically
causing the loop to slow down with sluggish response. Larger values of external capacitance could also cause
the module to become unstable.
The Tunable LoopTM allows the user to externally adjust the voltage control loop to match the filter network
connected to the output of the module. The Tunable LoopTM is implemented by connecting a series R-C
between the SENSE and TRIM pins of the module, as shown below. This R-C allows the user to externally
adjust the voltage loop feedback compensation of the module.
VOUT
SENSE
RTUNE
MODULE
CO
CTUNE
TRIM
GND
RTrim
Circuit diagram showing connection of RTUNE and CTUNE to tune the control loop of the module
Recommended values of RTUNE and CTUNE for different output capacitor combinations are given in Tables 2, 3, 4
and 5. Tables 2 and 4 shows the recommended values of RTUNE and CTUNE for different values of ceramic output
capacitors up to 940uF that might be needed for an application to meet output ripple and noise requirements.
Selecting RTUNE and CTUNE according to Tables 3 or 5 will ensure stable operation of the module.
In applications with tight output voltage limits in the presence of dynamic current loading, additional output
capacitance will be required. Tables 3 and 5 list recommended values of RTUNE and CTUNE in order to meet 2%
output voltage deviation limits for some common output voltages in the presence of a 3A to 6A step change
(50% of full load), with an input voltage of 5Vin and 3.3Vin respectively.
Please contact Bel Power technical representative to obtain more details of this feature as well as for guidelines
on how to select the right value of external R-C to tune the module for best transient performance and stable
operation for other output capacitance values or input voltages other than 5V.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
19
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Tunable LoopTM (continued)
Table 2.General recommended values of RTUNE and CTUNE for Vin=5V and various external ceramic capacitor
combinations.
Co
RTUNE
CTUNE
1x47μF
47
4700pF
2x47μF
47
10nF
4x47μF
47
33nF
6x47μF
33
47nF
10x47μF
33
56nF
20x47μF
33
68nF
Table 3.Recommended values of RTUNE and CTUNE to obtain transient deviation of ≤2% of Vout for a 3A step
load with Vin=5V.
Vo
Co
RTUNE
CTUNE
ΔV
3.3V
2.5V
1.8V
3 x 47μF 4 x 47μF 5 x 47μF
100
15nF
58mV
56
18nF
45mV
47
27nF
34mV
1.2V
1 x 47μF +
330uF
Polymer
33
47nF
24mV
0.6V
6 x 47μF +
330uF
Polymer
33
39nF
12mV
Table 4. General recommended values of RTUNE and CTUNE for Vin=3.3V and various external ceramic capacitor
combinations.
Co
RTUNE
CTUNE
1x47μF
47
10nF
2x47μF
47
15nF
4x47μF
47
39nF
6x47μF
33
47nF
10x47μF
33
68nF
20x47μF
33
82nF
Table 5. Recommended values of RTUNE and CTUNE to obtain transient deviation of ≤2% of Vout for a 3A step
load with Vin=3.3V.
Vo
Co
RTUNE
CTUNE
ΔV
2.5V
1.8V
6 x 47μF 6 x 47μF
33
47nF
46mV
33
47nF
33mV
1.2V
2 x 47μF +
330uF
Polymer
33
68nF
24mV
0.6V
2 x 330uF
Polymer
33
220nF
12mV
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
20
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Thermal Considerations
Power modules operate in a variety of thermal environments; however, sufficient cooling should always be
provided to help ensure reliable operation.
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.
25.4_
(1.0)
Wind Tunnel
PWBs
Power Module
76.2_
(3.0)
x
12.7_
(0.50)
Probe Location
for measuring
airflow and
ambient
temperature
Air
flow
Thermal Test Setup
The thermal reference point, Tref, used in the specifications is also shown below. For reliable operation the
temperatures at this point should not exceed 125oC. The output power of the module should not exceed the
rated power of the module (Vo,set x Io,max).
Preferred airflow direction and location of hot-spot of the module (Tref).
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
21
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Example Application Circuit
Requirements:
Vin:
Vout:
Iout:
ΔVout:
Vin, ripple
3.3V
1.8V
4.5A max., worst case load transient is from 3A to 4.5A
1.5% of Vout (27mV) for worst case load transient
1.5% of Vin (50mV, p-p)
Vin+
VIN
Vout+
VOUT
SENSE
RTUNE
+
CI2
MODULE
CI1
CTUNE
Q3
ON/OFF
GND
CI1
CI2
CO1
CTune
RTune
RTrim
CO1
TRIM
RTrim
2x22μF/6.3V ceramic capacitor
47μF/6.3V bulk electrolytic
5 x 47μF/6.3V ceramic capacitor (e.g. Murata GRM31CR60J476ME19)
47nF ceramic capacitor (can be 1206, 0805 or 0603 size)
33 ohms SMT resistor (can be 1206, 0805 or 0603 size)
1kΩ SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%)
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
22
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Mechanical Outline
PIN 10
PIN 7
PIN
1
2
3
4
5
6
7
8
9
10
FUNCTION
ON/OFF
VIN
GND
VOUT
SENSE
TRIM
GND
NC
SEQ
NC
PIN 8
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
23
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Mechanical Outline (continued)
Recommended Pad Layout
PIN 10
PIN 8
PIN 7
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.)
Note: This module is recommended and compatible with Pb-Free Reflow Soldering and must be
soldered using a reflow profile with a peak temperature of no more than 260ºC for less than 5
seconds.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
24
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
Packaging Details
The SLIN-06F1Ax modules are supplied in tape & reel as standard.
All Dimensions are in millimeters and (in inches).
Reel Dimensions:
Outside Dimensions:
Inside Dimensions:
Tape Width:
330.2 mm (13.00)
177.8 mm (7.00”)
24.00 mm (0.945”)
Surface Mount Information
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
25
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
December 10, 2010
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Pick and Place
The SLIN-06F1Ax modules use an open frame construction and are designed for a fully automated assembly
process. The modules are fitted with a label designed to provide a large surface area for pick and place
operations. The label meets all the requirements for surface mount processing, as well as safety standards, and
is able to withstand reflow temperatures of up to 300oC. The label also carries product information such as part
number and serial number.
Nozzle Recommendations
The module weight has been kept to a minimum by using open frame construction. Variables such as nozzle
size, tip style, vacuum pressure and placement speed should be considered to optimize this process. The
minimum recommended inside nozzle diameter for reliable operation is 3mm. The maximum nozzle outer
diameter, which will safely fit within the allowable component spacing, is 7 mm.
Lead Free Soldering
The SLIN-06F1Ax modules are lead-free (Pb-free) and RoHS compliant and fully 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.
Pb-free Reflow Profile
Power Systems will comply with J-STD-020 Rev. C (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 the figure below. Soldering outside of the recommended profile
requires testing to verify results and performance.
MSL Rating
The SLIN-06F1Ax modules have a MSL rating of 2.
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.
300
Per J-STD-020 Rev. C
Peak Temp 260°C
Reflow Temp (°C)
250
200
* Min. Time Above 235°C
15 Seconds
Cooling
Zone
150
Heating Zone
1°C/Second
*Time Above 217°C
60 Seconds
100
50
0
Reflow Time (Seconds)
Recommended linear reflow profile using Sn/Ag/Cu solder.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
26
NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
December 10, 2010
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.
Revision History
Date
Revision
Changes Detail
Approval
2009-10-12
A
First release.
T. Bubriski
2010-12-10
B
Updated Output Short-Circuit Current on page 3.
T. Bubriski
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and
other hazardous substances from electronic products.
©2009 Bel Fuse Inc. Specifications subject to change without notice. 121010
27
CORPORATE
FAR EAST
EUROPE
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
Bel Fuse Ltd.
8F/ 8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel 852-2328-5515
Fax 852-2352-3706
www.belfuse.com
Bel Fuse Europe Ltd.
Preston Technology Management Centre
Marsh Lane, Suite G7, Preston
Lancashire, PR1 8UD, U.K.
Tel 44-1772-556601
Fax 44-1772-888366
www.belfuse.com