A
11 to 17 Watt SD Single Series DC/DC Converters
Manufacturing Company, Inc. Concord, California 94520 Ph: 925/687-4411 or 800/542-3355 Fax: 925/687-3333 www.calex.com Email: sales@calex.com
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FRONT VIEW
RIGHT VIEW
Applications Information
You truly get what you pay for in a CALEX converter, a
complete system oriented and specified DC/DC converter -
no surprises, no component selection problems, no heatsinking
problems, just “plug and play”.
The SD Single series like all CALEX converters carries the
full 5 year CALEX no hassle warranty. We can offer a five year
warranty where others can’t because with CALEX it’s rarely
needed.
Keep reading, you’ll find out why.
General Information
The 100 kHz operating frequency of the SD Single series
allows an increased power density of up 25 watts per cubic
inch while still including adequate heat sinking and full filtering
on both the input and output. This prevents the need for
additional filtering and heatsinking in most applications.
The series is also mindful of battery operation for industrial,
medical control and remote data collection applications. The
remote ON/OFF pin places the converter in a very low power
mode that draws typically less than 5 A from the input source.
Noise has also achieved new lows in this single design,
while the industry standard is to specify output noise as 1 to
5% peak to peak typical with no mention of measurement
bandwidth. The SD converters achieve 60 mV peak to peak
typical and are fully specified and tested to a wide bandwidth
of 0-20 MHz.
Full overload protection is provided by independent pulse-
by-pulse current limiting. This protection scheme assures you
that our SD single will provide you with zero failure rate
operation.
A non-conductive / water washable case is standard along
with specified operation over the full industrial temperature
range of -40 to +85°C case temperature.
Applying The Input
Figure 1 shows the recommended input connections for the
SD Single DC/DC converter. A fuse is recommended to
protect the input circuit and should not be omitted. The fuse
serves to prevent unlimited current from flowing in the case of
a catastrophic system failure.
Figure 1.
Standard connections for the SD single input. The ON/OFF pin must
be connected to common for proper operation. The input protection
fuse should not be omitted. See the text for suggestions regarding
C1 and C2.
Mechanical tolerances unless
otherwise noted:
X.XX dimensions: ±0.020 inches
X.XXX dimensions: ±0.005 inches
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