FGLS12SR6040A Datasheet, PDF (9/21 Pages) List of Unclassifed Manufacturers – 4.5-14.4Vdc Input, 40A, 0.6-2.0Vdc Output

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FGLS12SR6040*A
4.5-14.4Vdc Input, 40A, 0.6-2.0Vdc Output
recommended delay between the ON/OFF signal and
the sequencing signal is 10ms to ensure that the
module output is ramped up according to the
sequencing signal. This ensures that the module
soft-start routine is completed before the sequencing
signal is allowed to ramp up.
Preliminary Data Sheet
To provide protection in a fault condition, the unit is
equipped with a thermal shutdown circuit. The unit will
shut down if the over-temperature threshold of 145°C
(typ) is exceeded at the thermal reference point Tref.
Once the unit goes into thermal shutdown it will then
wait to cool before attempting to restart.
Input Under-Voltage Lockout (UVLO)
At input voltages below the input under-voltage
lockout limit, the module operation is disabled. The
module will begin to operate at an input voltage above
the under-voltage lockout turn-on threshold.
Fig-8: Circuit showing connection of the
sequencing signal to the SEQ pin.
When the scaled down sequencing voltage is applied
to the SEQ pin, the output voltage tracks this voltage
until the output reaches the set-point voltage. The
final value of the sequencing voltage must be set
higher than the set-point voltage of the module. The
output voltage follows the sequencing voltage on a
one-to-one basis. By connecting multiple modules
together, multiple modules can track their output
voltages to the voltage applied on the SEQ pin.
The module’s output can track the SEQ pin signal
with slopes of up to 0.5V/msec during power-up or
power-down.
To initiate simultaneous shutdown of the modules, the
SEQ pin voltage is lowered in a controlled manner.
The output voltage of the modules tracks the voltages
below their set-point voltages on a one-to-one basis.
A valid input voltage must be maintained until the
tracking and output voltages reach ground potential.
Over-Current Protection
To provide protection in a fault (output overload)
condition, the unit is equipped with internal
current-limiting circuitry and can endure current
limiting continuously. At the point of current-limit
inception, the unit enters hiccup mode. The unit
operates normally once the output current is brought
back into its specified range.
Over-Temperature Protection
Synchronization
The module switching frequency can be synchronized
to a signal with an external frequency within a
specified range. Synchronization can be done by
using the external signal applied to the SYNC pin of
the module as shown in Fig-I, with the converter being
synchronized by the rising edge of the external signal.
The Electrical Specifications table specifies the
requirements of the external SYNC signal. If the
SYNC pin is not used, the module should free run at
the default switching frequency.
If synchronization is not being used, connect the
SYNC pin to GND.
Fig-9: External source connections to
synchronize switching frequency of the module.
Active Load Sharing (-P Option)
For additional power requirements, the FGLS power
module is also equipped with paralleling capability.
Up to five modules can be configured in parallel, with
active load sharing.
To implement paralleling, the following conditions
must be satisfied.
 All modules connected in parallel must be
frequency synchronized where they are switching
at the same frequency. This is done by using
the SYNC function of the module and connecting
to an external frequency source. Modules can be
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Ver 1.5 May. 9, 2013