A
6 Watt Dual 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
1
1.29.98, eco# 041007-1
Features
Low Profile Copper Case (0.375" High)
Six-Sided Shielded Case
Low Input/Output Noise Operation
700 VDC Input/Output Isolation
Short Circuit Protected Output
Fixed Frequency Operation Independent
of Line and Load
Highly Regulated/Low Drift Output
Rugged High Speed MOSFET Power Chopper
5 Year Warranty
Description
Ideal for industrial applications, these 6 Watt Dual Output
converters are suitable for use in telecommunications, medical
and other systems that require floating outputs.
These DC/DC converters operate at a fixed frequency that
is independent of line and load. The isolation transformer
provides 700 VDC isolation between input and output grounds
allowing the outputs to be floated above or below the input
ground. Designed for maximum performance, each unit has
an LC input filter, high speed MOSFET power chopper and
short circuit protected linear post regulators.
The copper case, measuring only 0.375" high, is shielded
on all six sides to minimize radiated noise. All converters in
this series are guaranteed under the CALEX 5 Year Warranty.
6 Watt Dual Output Series Block Diagram
FIXED
FREQUENCY
POWER
DRIVER
LC
INPUT
FILTER
SERIES
PASS
REGULATOR
SERIES
PASS
REGULATOR
3
4
5
CASE
+ OUTPUT
CMN
- OUTPUT
1
2
+ INPUT
- INPUT
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A
6 Watt Dual 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
2
1.29.98, eco# 041007-1
NOTES
*
All parameters measured at Tc=25C, nominal input voltage
and full rated load unless otherwise noted. Refer to the
CALEX Application Notes for the definition of terms,
measurement circuits and other information.
(2)
Turn on time is defined as the time from the application of power
until the output is within 1% of its final value.
(3)
Determine the correct fuse size by calculating the maximum DC
current drain at low line input, maximum load and then adding 20
to 25 percent.
(4)
No minimum load required.
(5)
Short term stability is specified after a 30 minute warm-up at full
load and with constant line, load and ambient conditions.
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A
6 Watt Dual 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
3
1.29.98, eco# 041007-1
BOTTOM VIEW
SIDE VIEW
Mechanical tolerances unless otherwise noted:
X.XX dimensions: 0.020 inches
X.XXX dimensions: 0.005 inches
Seal around terminals is not hermetic. Do not immerse units in any
liquid.
(6)
The transient response is specified as the time required for the
output to settle from a 100% step load change (Rise time of step
= 2 Sec.) to a 1% error band.
(7)
Dynamic response is the peak overshoot voltage during the
transient response time as defined in note 6 above.
(8)
The input ripple rejection is specified for DC to 120Hz ripple with
a modulation amplitude of 1% Vin.
(9)
The case thermal impedance is specified as the case temperature
rise over ambient per package watt dissipated.
(10) Water Washability - Calex DC/DC converters are designed to
withstand most solder/wash processes. Careful attention should
be used when assessing the applicability in your specific
manufacturing process. Converters are not hermetically sealed.
*
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