HA1SV12004 Datasheet, PDF (7/11 Pages) Delta Electronics, Inc. – 50W DC/DC Power Modules

The output voltage can be increased by both the remote
sense and the trim, however the maximum increase is
the larger of either the remote sense or the trim, not the
sum of both.
When using remote sense and trim, the output voltage
of the module is usually increased, which increases the
power output of the module with the same output
current.
Care should be taken to ensure that the maximum
output power of the module remains at or below the
maximum rated power.
Pin function
The pin was difine as follow in figure 20 ,we will explain
the pin function:
+IN, -IN .DC voltage inputs.
Gate IN . The Gate IN pin on a driver module may be
used as a logic enable/disable input.When Gate IN is pull
low (<1V,referenced to –Vin ),the module is turned off .
when Gate IN is floating (open collector) ,the module is
turned on .The open circuit voltage of Gate in PIN is less
than 5V.
Gate OUT . the pulsed signal at the Gate OUT pin of a
regulating driver module is used to synchronously drive
the surge circuit in order to meet the RIA12 surge
needed. If you don’t used this function, please floating it.
+OUT, -OUT .DC voltage outputs.
T(TRIM). Provides fixed or variable adjustment of the
module output.
Trimming down. Allows output voltage of the module to
be trimmed down, with a decrease in efficiency .ripple as
a percent of output voltage goes up and input range
widens since input voltage dropout(loss of regulation)
moves down
Trimming up. Reverses the above effects.
-Sense,+Sense.Provides for locating the point of optimal
voltage regulation external to the converter.
THERMAL CONSIDERATIONS
Thermal management is an important part of the
system design. To ensure proper, reliable operation,
sufficient cooling of the power module is needed over
the entire temperature range of the module.
Convection cooling is usually the dominant mode of
heat transfer.
Hence, the choice of equipment to characterize the
thermal performance of the power module is a wind
tunnel.
Thermal Testing Setup
Delta’s DC/DC power modules are characterized in
heated vertical wind tunnels that simulate the thermal
environments encountered in most electronics
equipment. This type of equipment commonly uses
vertically mounted circuit cards in cabinet racks in
which the power modules are mounted.
The following figure shows the wind tunnel
characterization setup. The power module is mounted
on a test PWB and is vertically positioned within the
wind tunnel. The space between the neighboring PWB
and the top of the power module is constantly kept at
6.35mm (0.25’’).
FANCING PWB
PWB
MODULE
AIR VELOCITY
AND AMBIENT
TEMPERATURE
SURED BELOW
THE MODULE
AIR FLOW
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
Figure 15: Wind tunnel test setup
Thermal Derating
Heat can be removed by increasing airflow over the
module. To enhance system reliability, the power
module should always be operated below the
maximum operating temperature. If the temperature
exceeds the maximum module temperature, reliability
of the unit may be affected.
DS_HA1SV12004_04082016
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http://www.deltaww.com/dcdc _P7