SLC100-7 データシートの表示（PDF） - C AND D TECHNOLOGIES
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SLC100-7 Datasheet PDF : 10 Pages
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APPLICATION NOTES
Brick Wall Current Limiting
To protect against fault or short-circuit conditions on
the output, each module is equipped with current-limit-
ing circuitry designed to provide continuous protection.
After reaching the current limit point (typically 20%
above the rated output current), the voltage will range
between its rated value and zero, depending upon the
amount of overload. The unit will remain in operation
continuously during this period down to a short-circuit
condition. Once the short or overload has been elimi-
nated, the output voltage will return to normal without
cycling the input power.
Output Over-Voltage Protection
The SLC100 has an output over voltage protection
(OVP) circuit which monitors its own output voltage. If
the output voltage of the converter exceeds between
120% and 140% of the nominal rating, the OVP circuit
will shut down the converter. Once the OVP has been
tripped the unit will need to be reset by cycling the
input power or by toggling the ON/OFF power before
normal operation can resume.
SLC100 units with a non-latching OVP feature are
available on request. Please contact the factory for
further details.
Safety
The SLC100 meets safety requirements per UL/CUL
60950 and VDE EN60950, basic insulation rating.
Performance Characterization
Thermal Derating
Maximum output current vs. ambient temperature at
various airflow rates has been determined for each
model of the SLC100. Each model was analyzed over
an ambient temperature range of 0 to 85oC and at air
flows up to 700LFM. Temperature limits for thermal
derating curves were 130oC for semiconductor junction
temperature and 130oC for board temperature.
Start-Up, ON/OFF and Transient Response
For each model, waveforms are provided showing
output voltage response and timing of input voltage
power up/down, remote ON/OFF state change and
load current transient responses. Output voltage
transient responses are provided for step load changes
of 50% to 75% & 75% to 50% of rated load current.
Waveforms for each model are provided in their
respective section.
Efficiency Performance
Efficiency data for each model was determined as
a function of both load current and input voltage.
Efficiency vs. Input Voltage was measured at full load,
ambient temperature of 25oC and airflow of 300LFM.
Efficiency vs. Load Current was measured at 25oC, a
nominal input voltage of 48Vdc and airflow of 300LFM.
Graphs are provided for each model in their respective
section.
EMC/EMI Considerations
Analysis pending.
Product: www.cdpoweronline.com
SLC100 1.2V Rev C 11/2004
7
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