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Safety Consideration:
Safety Consideration:
For safety-agency approval of the system in
which the power module is used, the power
module must be installed in compliance with the
spacing and separation requirements of the
end-use safety agency standard, i.e., UL1950,
CSA C22.2 No. 950-95, and EN60950. The
input-to-output 1500VDC isolation is an opera-
tional insulation. The DC/DC power module
should be installed in end-use equipment, in
compliance with the requirements of the ulti-
mate application, and is intended to be supplied
by an isolated secondary circuit. When the sup-
ply to the DC/DC power module meets all the
requirements for SELV(<60Vdc), the output is
considered to remain within SELV limits (level
3). If connected to a 60Vdc power system, dou-
ble or reinforced insulation must be provided in
the power supply that isolates the input from
any hazardous voltages, including the ac
mains. One Vi pin and one Vo pin are to be
grounded or both the input and output pins are
to be kept floating. Single fault testing in the
power supply must be performed in combina-
tion with the DC/DC power module to demon-
strate that the output meets the requirement for
SELV. The input pins of the module are not
operator accessible.
Note: Do not ground either of the input pins of
the module, without grounding one of the output
pins. This may allow a non-SELV voltage to
appear between the output pin and ground.
Output Characteristics
Output Characteristics
Minimum Load Requirements:
Minimum Load Requirements:
There is no minimum load requirement for
AEE-10W 12Vin dual output series modules.
Output T
Output Trimming:
rimming:
AEE-10W 12V input dual output series does not
have trim function.
Output Over-Current Protection:
Output Over-Current Protection:
AEE-10W 12V input series DC/DC converters
feature foldback current limiting as part of their
Overcurrent Protection (OCP) circuits. When
output current exceeds 110 to 150% of rated
current, such as during a short circuit condition,
the output will shutdown. Note if input voltage
exceeds 20V, the continuous shortcircuit
may damage the module or decrease its life.
Output Filters
Output Filters
When the load is sensitive to ripple and noise,
an output filter can be added to minimize the
effects. A simple output filter to reduce output
ripple and noise can be made by connecting a
capacitor across the output as shown in Figure
6. The recommended value for the output
capacitor is 100µF/25V.
Extra care should be taken when long leads or
traces are used to provide power to the load.
Long lead lengths increase the chance for
noise to appear on the lines. Under these con-
ditions C2 can be added across the load as
shown in Figure 7. The recommended compo-
nent for C2 is 100µF/25V capacitor and con-
necting a 0.47µF/25V ceramic capacitor in par-
allel generally.