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Q48SE12025NRFA Fiches technique(PDF) 8 Page - Delta Electronics, Inc.

No de pièce Q48SE12025NRFA
Description  Delphi Series Q48SE, Quarter Brick Family DC/DC Power Modules 38~75V in, 11.8V/25A out, 300W
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Fabricant  DELTA [Delta Electronics, Inc.]
Site Internet  http://www.deltaww.com
Logo DELTA - Delta Electronics, Inc.

Q48SE12025NRFA Fiches technique(HTML) 8 Page - Delta Electronics, Inc.

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8
FEATURES DESCRIPTIONS
Over-Current Protection
The modules include an internal output over-current
protection circuit, which will endure current limiting for
an unlimited duration during output overload. If the
output current exceeds the OCP set point, the modules
will shut down (hiccup mode).
The modules will try to restart after shutdown. If the
overload condition still exists, the module will shut down
again. This restart trial will continue until the overload
condition is corrected.
Over-Voltage Protection
The modules include an internal output over-voltage
protection circuit, which monitors the voltage on the
output terminals. If this voltage exceeds the over-voltage
set point, the protection circuit will constrain the max
duty cycle to limit the output voltage, if the output
voltage continuously increases the modules will shut
down, and then restart after a hiccup-time (hiccup
mode).
There is an option of latch mode. Please contact with
Delta if needed.
Over-Temperature Protection
The over-temperature protection consists of circuitry
that provides protection from thermal damage. If the
temperature exceeds the over-temperature threshold
the module will shut down. The module will restart after
the temperature is within specification.
Remote On/Off
The remote on/off feature on the module can be either
negative or positive logic. Negative logic turns the
module on during a logic low and off during a logic high.
Positive logic turns the modules on during a logic high
and off during a logic low.
Remote on/off can be controlled by an external switch
between the on/off terminal and the Vi (-) terminal. The
switch can be an open collector or open drain.
For negative logic if the remote on/off feature is not
used, please short the on/off pin to Vi (-). For positive
logic if the remote on/off feature is not used, please
leave the on/off pin to floating.
The on/off signal should be longer than 120us, module
will not response to the less than 120us on/off signals. It
is better for customer to use on/off signal much longer
than 120us, DC level on/off signal is suggested.
Figure 16: Remote on/off implementation


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