FGSD12SR6003A Datasheet, PDF (28/41 Pages) List of Unclassifed Manufacturers – 3-14.4Vdc Input, 3A, 0.45-5.5Vdc Output

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FGSD12SR6003*A
3-14.4Vdc Input, 3A, 0.45-5.5Vdc Output
Characterization
Overview
The converter has been characterized for several
operational features, including efficiency, thermal
derating (maximum available load current as a
function of ambient temperature and airflow), ripple
and noise, transient response to load step changes,
start-up and shutdown characteristics.
Figures showing data plots and waveforms for
different output voltages are presented in the
following pages.
Preliminary Data Sheet
A maximum component temperature of 120°C should
not be exceeded in order to operate within the
derating curves. Thus, the temperature at the
thermocouple location shown in Fig-14 should not
exceed 120°C in normal operation.
Note that continuous operation beyond the derated
current as specified by the derating curves may lead
to degradation in performance and reliability of the
converter and may result in permanent damage.
Thermal Considerations
Power modules operate in a variety of thermal
environments; however, sufficient cooling should
always be provided to help ensure reliable operation.
Considerations include ambient temperature, airflow,
module power dissipation, and the need for increased
reliability. A reduction in the operating temperature of
the module will result in an increase in reliability.
The thermal data presented here is based on
physical measurements taken in a wind tunnel. The
test set-up is shown in Fig-13. The preferred airflow
direction for the module is in Fig-14.
Wind Tunnel
PWBs
25.4_
(1.0)
Power Module
Fig-14: Preferred airflow direction and location
of hot-spot of the module (Tref).
The main heat dissipation method of this converter is
to transfer its heat to the system board. Thus, if the
temperature of the system board goes high, even
with the low ambient temperature, it may exceed the
guaranteed temperature of components.
76.2_
(3.0)
x
12.7_
(0.50)
Air
flow
Fig-13: Thermal test set-up
Probe Location
for measuring
airflow and
ambient
temperature
The maximum available load current, for any given
set of conditions, is defined as the lower of:
(i) The output current at which the temperature of any
component reaches 120°C, or
(ii) The current rating of the converter (3A)
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Ver 1.6 May. 8, 2013