CBAM��� Load Share (LSL) Series
1
2401 Stanwell Drive, Concord Ca. 94520 Ph: 925-687-4411 Fax: 925-687-3333 www.calex.com Email: sales@calex.com
4/14/08 ECO 100428-1, 130808-1
Features
Dual input/single output load share module
Six module voltages 3.3V, 5V, 12V, 15V, 24V, and 48V
Small package design (1.45” x 2.28” x 0.50”)
Rated up to 60 amps on the output
Aluminum substrate technology
All applicable materials used are a minimum of
UL94V-0 rated. Designed to meet UL60950.
Five year warranty
Available with RoHS compliant construction, simply
add “(RoHS)” after the part number i.e 5LSL30 (RoHS)
Excellent MTBF
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Description
Calex’s LSL Series provide an easy and reliable way to
parallel DC/DC Converters. The LSL module uses the
positive sense pin for accurate load sharing, leaving
the trim function unaffected. See application section for
layout recommendations.
Selection Chart
Model
Input Voltage Range
VDC
Output Current Range
ADC
Min Max Min Max
3R3LSL30 3.0 4.0 0 60
5LSL30 4.0
10.0 0 60
12LSL12 10.0 14.0 0 24
15LSL10 14.0 18.0 0 20
24LSL6
18.0 36.0 0 12
48LSL6 36.0 50.0 0 12
Load
3
4
5
8
7
6
2
1
DC/DC Converter
+OUTPUT
DC/DC Converter
LSL Module
+SENSE
-OUTPUT
+OUTPUT
+SENSE
-OUTPUT
+V
BUS
+V
OUT
-V
OUT
+SENSE
Load Share Module Connected in System
CBAM™ Load Share (LSL) Series
2
2401 Stanwell Drive, Concord Ca. 94520 Ph: 925-687-4411 Fax: 925-687-3333 www.calex.com Email: sales@calex.com
4/14/08 ECO 100428-1, 130808-1
(10) MTBF is calculated based on MIL-HDBK-217F under the
following conditions:
Reliability prediction method = Part Stress Analysis
Baseplate temperature = 40ºC
Environment = Ground, Benign
(11) Available with RoHS and Non-RoHS construction, contact factory
for details.
See Calex Website www.calex.com/RoHS.html for the complete
RoHS Compliance statement.
The RoHS marking is as follows.
Input Parameters
Model 3R3LSL30 5LSL30 12LSL12 15LSL10 24LSL6 48LSL6 Units
Input Voltage Range MIN
TYP
MAX
3.0
3.3
4.0
4.0
5.0
10.0
10.0
12.0
14.0
14.0
15.0
18.0
18.0
24.0
36.0
36.0
48.0
50.0
VDC
Input Current, No Load TYP 40 40 40 40 40 40 mA
Input Current Per Pin MIN
MAX
0
30.0
0
30.0
0
12.0
0
10.0
0
6.0
0
6.0
A
Current Share Ratio (3) TYP ±3 %
Output Parameters
Rated Load Range MIN
MAX
0
60
0
60
0
24
0
20
0
12
0
12
A
Load Regulation (4) TYP
MAX
1.0
2.0
%
Short Term Drift (5) TYP <0.1 %
Temperature Coefcient TYP
MAX
50
150
ppm/ºC
Isolation
Baseplate to Ground MIN 700 VDC
Environmental
Baseplate Operating Temperature
Range
MIN
MAX
-40
100
ºC
Storage Temperature Range MIN
MAX
-40
105
ºC
Baseplate Thermal Impedance (6) TYP 9 ºC/Watt
MTBF MIL-HDBK-217F (10) MIN 530,329 h
Notes:
(1) All parameters measured at T
Baseplate
=25ºC, V
in
=V
Nominal
, and
rated output current unless otherwise noted. Refer to the CALEX
Application Notes for the denition of terms, measurement
circuits, and other information.
(2) Refer to the CALEX Application Notes for information on fusing.
(3) The current share ratio is dened as the percentage of the
individual converter currents entering the LSL module divided by
50% of the current exiting the LSL module. The latter being the
theoretical optimum load sharing current. This is measured at full
load.
(4) Load regulation is dened as the output voltage change when
changing load current from minimum to maximum.
(5) Short Term drift is specied after a 30 minute warm-up at full
load, constant line, load and ambient conditions.
(6) The baseplate thermal impedance is dened as the baseplate
temperature rise over ambient per package watt dissipated.
(7) Calex CBAM™ modules are designed to withstand most
solder/wash processes. Careful attention should be used
when assessing the applicability in your specic manufacturing
process. The CBAM™ modules are not hermetically sealed.
(8) Units are not short circuit or thermally protected.
(9) Torque fasteners into threaded mounting inserts at 12 in. oz. or
less. Greater torque may result in damage to unit and void the
warranty.