APPLICATION NOTES
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 avail-
able on request. Please contact the factory for further
details.
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
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 25
o
C and airflow of 300LFM.
Efficiency vs. Load Current was measured at 25
o
C, a
nominal input voltage of 48Vdc and airflow of 300LFM.
Graphs are provided for each model in their respective
Safety
The SLC100 meets safety requirements per UL/CUL
60950 and VDE EN60950, basic insulation rating.
EMC/EMI Considerations
Analysis pending.
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 85
o
C and at air
flows up to 600LFM. Temperature limits for thermal
derating curves were TBD C for semiconductor junction
temperature and TBD C for board temperature.
SLC100 Rev B
5/2004
7
MURATA-PS [ MURATA POWER SOLUTIONS INC. ]
