d12s1r227-2d Delta Electronics, Inc., d12s1r227-2d Datasheet - Page 7

• Manufacturer Part Number: d12s1r227-2d
• Description: D12s1r227-2d, Non-isolated, Power Block Dc/dc Power Modules 7.0~13.2vin, 0.8v~1.8v/25aout
• 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 wind
environments
equipment.
The
characterization setup. The power module is mounted
on Primarion test board and is horizontally positioned
within the wind tunnel.
Figure 13:Wind Tunnel Test Setup (Single Module)
Longitudinal Orientation:
Transverse Orientation:
Airflo
Airflo
Airflo
Airflo
w
following
w
w
w
Top View
Side View
tunnels that
encountered
Top View
Side View
figures
show
simulate
in
the
most
Front View
wind
the
electronics
Front View
thermal
tunnel
Figure 14: Wind Tunnel Test Setup (Parallel Module)
Thermal De-rating
The module’s maximum hot spot temperature is +110°C.
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 15: Temperature measurement location
The allowed maximum hot spot temperature is defined at 110
Longitudinal Orientation:
Transverse Orientation:
Airflo
Airflo
Airflo
Airflo
w
w
w
w
Top View
Side View
Top View
Side View
Front View
Front View
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