NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input, 0.7 Vdc – 2 Vdc /50 A Outputs
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jul. 17 2015
SLIN-50E1AL
RoHS Compliant
Rev.E
Features
Wide Input Voltage Range
Output Voltage Sequencing
Monotonic Start-up
Over Temperature Protection
Negative Remote On/Off
Output Over Current Protection
True Differential Remote Sense
Tunable Loop (a registered trademark of Lineage Power Systems) to Optimize Dynamic
output voltage response
Compliant to IPC-9592 (September 2008), Category 2, Class II
Parallel Operation With Active Current Sharing
TM
Compliant to RoHS EU Directive 2002/95/EC
UL* 60950 Recognized, CSA† C22.2 No. 60950-1-07 Certified
VDE‡ 0805 (EN60950-1 2nd edition) Licensed
Applications
Distributed power architectures
Intermediate bus voltage applications
Telecommunications equipment
Industrial applications
Description
The SLIN-50E1AL power modules are non-isolated dc/dc converters that can deliver up to 50 A of output current.
These modules operate over a wide range of input voltage (VIN = 4.5 Vdc-14 Vdc) and provide a precisely
regulated output voltage from 0.7 Vdc to 2.0 Vdc, programmable via an external resistor. Features include
remote On/Off, adjustable output voltage, over current and over temperature protection, output voltage
sequencing and paralleling. 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
0.7 Vdc - 2 Vdc
4.5 Vdc - 14 Vdc
Max. Output
Current
50 A
Typical
Efficiency
87%
Model Number
Active Low
SLIN-50E1AL
Notes: 1. Add “R” suffix at the end of the model number to indicate tape and reel packaging (Standard).
2. Add “G” suffix at the end of the model number to indicate tray packaging (Option).
Ordering Part Number
S LIN – 50 E 1A L x
1
2
3 4
5
6
7
1---Surface mount
4--- Wide input voltage range (4.5-14V)
2---Series code
5--- Wide output voltage range (0.7-2V)
3---Output current (50A)
6--- Enable, active low
7---Package, “G” for Tray Packaging, “R” for Reel Packaging
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
4.5 Vdc - 14 Vdc Input, 0.7 Vdc – 2 Vdc /50 A Outputs
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jul. 17 2015
Absolute Maximum Ratings
Min
Typ
Max
Unit
Continuous Input Voltage
-0.3
-
14
V
Sequencing Pin Voltage
-0.3
-
4
V
Operating Ambient Temperature
-40
-
85
C
Storage Temperature
-55
-
125
C
-
-
2000
m
Parameter
Altitude
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
4.5
Typ
-
Max
14
Unit
V
Input Current (full load)
-
-
26
A
-
73.4
-
mA
-
136
-
mA
-
1.3
-
mA
VIN = VIN,mon , module disabled
5Hz to 20MHz, 1μH source impedance;
VIN,min to VIN,max, IO= IOmax
Input Current (no load)
Input Stand-by Current
Input Reflected Ripple Current
(pk-pk)
-
-
73
mA
I t Inrush Current Transient
-
-
1
As
Input Ripple Rejection (120Hz)
-
50
-
dB
Turn-on Threshold
-
4.26
-
V
Turn-off Threshold
-
4.04
-
V
Hysteresis
-
0.22
-
V
2
Notes
VIN= VIN,min to VIN,max, IO = IO,max
Vo=0.7V, VIN= V IN,mon, IO=0
module enabled
Vo=1.8V, VIN= V IN,mon, IO=0
module enabled
2
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 surface mount, fast acting fuse with a maximum rating of 30A. 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
4.5 Vdc - 14 Vdc Input, 0.7 Vdc – 2 Vdc /50 A Outputs
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jul. 17 2015
Output Specifications
Parameter
Min
Typ
Max
Unit
Notes
Output Voltage Set Point
-1.0
-
+1.0
%Vo,set
VIN=VIN,nom, IO=IO, nom, T ref=25°C.
Output Voltage
-2.0
-
+2.0
%Vo,set
Over all operating input voltage, resistive load,
and temperature conditions until end of life
Adjustment Range
0.7
-
2.0
V
Remote Sense Range
-
-
0.5
V
Load Regulation
-
-
8
mV
IO=IO, min to IO, max
Line Regulation
-
-
5
mV
VIN=VIN, min to VIN, max
Temperature Regulation
(-40°C to 85°C)
-
-
8
mV
Tref=TA, min to TA, max
Ripple and Noise (pk-pk)
-
-
50
mV
5Hz to 20MHz BW, VIN=VIN, nom and IO =IO, min to
IO, max, Co = 1μF // 10 μF ceramic capacitors
Output Current Range
0
-
50
A
Output DC Current Limit
-
180
-
%Io,max
Output Short-Circuit Current
-
5.5
-
A
Vo≤250mV, Hiccup Mode
Output Capacitance
ESR≥1 mΩ
ESR≥10 mΩ
ESR≥1 mΩ
ESR≥10 mΩ
-
-
1200
10000
20000
20000
uF
uF
uF
uF
Without the Tunable Loop
TM
Without the Tunable Loop
TM
With the Tunable Loop
With the Tunable Loop TM
-
4.8
-
mS
-
4.8
-
mS
Output voltage Rise time
-
3.6
-
mS
Output voltage overshoot
-
-
3
%Vo,set
selected by an external resistor
Hiccup Mode
TM
Case 1: On/Off input is set to Logic Low (Module
Turn-On Delay Time
ON) and then input power is applied (delay from
instant at which VIN =V IN, 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 set to logic Low
(delay from instant at which Von/Off=0.3V until
Vo=10% of Vo, set)
time for Vo to rise from 10% of Vo, set to 90%
of Vo, set
Io=Io, max,Vin=4.5 to 14Vdc, Ta=25°C
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
3
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input, 0.7 Vdc – 2 Vdc /50 A Outputs
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jul. 17 2015
General Specifications
Parameter
Min
Typ
Max
Unit
-
81.1
87.0
90.1
-
%
%
%
Switching Frequency
-
260
-
kHz
Over Temperature Protection
-
125
-
C
Sequencing Slew rate capability
-
-
2
V/mS
10
-
-
mS
-
100
200
200
400
mV
mV
-
5
112.5
87.5
-
V
%Vo,set
%Vo,set
Forced Load Share Accuracy
-
10
-
%Io
Number of Units in Parallel
-
-
5
-
Weight
-
14.22
-
g
Efficiency
Vo=0.7V
Vo=1.2V
Vo=1.8V
Sequencing Delay time
Tracking Accuracy
Power-Up: 2V/ms
Power-Down: 1V/ms
PGOOD (Power Good)
Internal pull-up, VPGOOD
Overvoltage threshold for PGOOD
Undervoltage threshold for PGOOD
MTBF
4,755,661
Hours
1.30 x 0.90 x 0.34
33 x 22.9 x 10
-
Notes
Vin= 12Vdc, Ta=25°C
Io=Io, max , Vo= Vo,set
VIN, min to VIN, max; IO, min to IO, max
VSEQ < Vo
Delay from VIN, min to application of
voltage on SEQ pin
VIN, min to VIN, max; IO, min - IO, max
VSEQ < Vo
Calculated MTBF (IO=IO, max,
Ta=40°C) per Telecordia Issue 2,
Method I, 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
4.5 Vdc - 14 Vdc Input, 0.7 Vdc – 2 Vdc /50 A Outputs
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jul. 17 2015
95
95
90
90
EFFICIENCY, (%)
EFFICIENCY, (%)
Efficiency Data
85
Vin=12V
80
Vin=4.5V
Vin=14V
75
70
Vin=12V
85
Vin=14V
80
Vin=4.5V
75
70
0
10
20
30
40
50
OUTPUT CURRENT, I O (A)
0
10
20
30
40
50
OUTPUT CURRENT, IO (A)
Vo=0.7V, T a=25°C
Vo=1.2V, Ta=25°C
100
Vin=12V
EFFICIENCY, (%)
95
90
85
Vin=14V
Vin=4.5V
80
75
70
0
10
20
30
40
50
OUTPUT CURRENT, I O (A)
Vo=1.8V, T a=25°C
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
4.5 Vdc - 14 Vdc Input, 0.7 Vdc – 2 Vdc /50 A Outputs
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jul. 17 2015
55
55
50
50
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, Io (A)
Thermal Derating Curves
45
NC
40
0.5m/s
(100LFM)
1.5m/s
(300LFM)
35
1m /s
( 200LFM )
30
2m/s
(400LFM)
25
35
45
55
65
75
85
AMBIENT TEMPERATURE, TA OC
45
NC
40
0.5m/s
(100LFM)
35
1m/s
(200LFM)
30
1.5m/s
(300LFM)
2m/s
(400LFM)
25
35
45
55
65
75
85
AMBIENT TEMPERATURE, T A OC
Vo=0.7V, Vin=12V
Vo=1.2V, Vin=12V
55
OUTPUT CURRENT, Io (A)
50
45
40
NC
35
0.5m/s
(100LFM)
30
1.5m/s
1m/s
(300LFM)
(200LFM)
2m/s
(400LFM)
25
35
45
55
65
75
85
O
AMBIENT TEMPERATURE, TA C
Vo=1.8V, Vin=12V
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
4.5 Vdc - 14 Vdc Input, 0.7 Vdc – 2 Vdc /50 A Outputs
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jul. 17 2015
OUTPUT VOLTAGE
VO (V) (10mV/div)
OUTPUT VOLTAGE
VO (V) (10mV/div)
Ripple and Noise Waveforms
TIME, t (1s/div)
Vo=1.2V, Ta=25°C , Vin=12V, Io = Io,max
OUTPUT VOLTAGE
VO (V) (10mV/div)
Vo=0.7V, T a=25°C , Vin=12V, Io = Io,max
TIME, t (1s/div)
TIME, t (1s/div)
Vo=1.8V, Ta=25°C , Vin=12V, 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
4.5 Vdc - 14 Vdc Input, 0.7 Vdc – 2 Vdc /50 A Outputs
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jul. 17 2015
OUTPUT VOLTAGE
VO (V) (10mV/div)
OUTPUT CURRENT,
IO (A) (20A/div)
OUTPUT CURRENT,
IO (A) (20A/div)
OUTPUT VOLTAGE
VO (V) (10mV/div)
Transient Response Waveforms
TIME, t (0.2ms /div)
TIME, t (0.1ms /div)
Transient Response to Dynamic Load Change from 50% to
100%. Vo=1.2V, Ta=25°C, Vin=12V,Cext =5x47uF+
+13x330uFpolymer,CTune=120nF,RTune=180ohms
OUTPUT CURRENT,
IO (A) (20A/div)
OUTPUT VOLTAGE
V O (V) (20mV/div)
Transient Response to Dynamic Load Change from 50% to
100%. Vo=0.7V, Ta=25°C, Vin=12V,Cext =5x47uF+
+22x330uFpolymer,CTune=330nF,RTune=100ohms
TIME, t (0.1ms /div)
Transient Response to Dynamic Load Change from 50% to
100%.Vo=1.8V, Ta=25°C, Vin=12V, Cext =5x47uF+
+8x330uFpolymer,CTune=47nF,RTune=220ohms
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
4.5 Vdc - 14 Vdc Input, 0.7 Vdc – 2 Vdc /50 A Outputs
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jul. 17 2015
ON/OFF VOLTAGE
VON/OFF (V) (5V/div)
OUTPUT VOLTAGE
Vo (V) (500mV/div)
OUTPUT VOLTAGE
Vo (V) (200mV/div)
ON/OFF VOLTAGE
VON/OFF (V) (5V/div)
Startup Time
TIME, t (2 ms/div)
Start-up Using On/Off Voltage (Io = Io,max)
Vo=1.2V, Vin = 12V, Ta=25°C
OUTPUT VOLTAGE
Vo (V) (500mV/div)
ON/OFF VOLTAGE
VON/OFF (V) (5V/div)
Start-up Using On/Off Voltage (Io = Io,max)
Vo=0.7V, Vin = 12V, Ta=25°C
TIME, t (2 ms/div)
TIME, t (2 ms/div)
Start-up Using On/Off Voltage (Io = Io,max)
Vo=1.8V, Vin = 12V, Ta=25°C
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
4.5 Vdc - 14 Vdc Input, 0.7 Vdc – 2 Vdc /50 A Outputs
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jul. 17 2015
INPUT VOLTAGE
VIN (V) (5V/div)
OUTPUT VOLTAGE
Vo(V) (500mV/div)
OUTPUT VOLTAGE
Vo(V) (200mV/div)
INPUT VOLTAGE
VIN (V) (5V/div)
Startup Time (continued)
TIME, t (2 ms/div)
Start-up Using Input Voltage (VIN = 12V, Io = Io,max ),
Vo=1.2V, Ta=25°C
OUTPUT VOLTAGE
Vo(V) (500mV/div)
INPUT VOLTAGE
VIN (V) (5V/div)
Start-up Using Input Voltage (V IN = 12V, Io = Io,max ),
Vo=0.7V, Ta=25°C
TIME, t (2 ms/div)
TIME, t (2 ms/div)
Start-up Using Input Voltage (V IN = 12V, Io = Io,max ),
Vo=1.8V, Ta=25°C
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
4.5 Vdc - 14 Vdc Input, 0.7 Vdc – 2 Vdc /50 A Outputs
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jul. 17 2015
Test Configurations
Input Reflected Ripple Current Test Setup.
CURRENT PROBE
TO OSCILLOSCOPE
LTES T
VIN(+)
BATTERY
1μH
CIN
CS 1000μF
Electrolytic
2x100μF
Tantalum
E.S.R.