DNL10S0A0R20PFB Delta Electronics, Inc., DNL10S0A0R20PFB Datasheet - Page 14

• Manufacturer Part Number: DNL10S0A0R20PFB
• Description: Delphi Dnl, Non-isolated Point Of Load Dc/dc Power Modules 8.3-14vin, 0.75-5.0v/20a Out
• Manufacturer: Delta Electronics, Inc.

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
characterization setup. The power module is mounted on
a test PWB and is vertically positioned within the wind
tunnel. The height of this fan duct is constantly kept at
25.4mm (1’’).
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.
Figure 40: Wind tunnel test setup
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
PRELIMINARY DS_DNL10SIP20_10132008
MEASURED BELOW
following
TEMPERATURE
AIR VELOCITY
AND AMBIENT
THE MODULE
FACING PWB
figure
AIR FLOW
shows
PWB
50.8 (2.0”)
MODULE
12.7 (0.5”)
25.4 (1.0”)
the
wind
tunnel
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