QSEVEN-Q7ALx2 - Preliminary User Guide, Rev. 0.7
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Thermal Management
5.7.
5.7.1.
Heatspreader Plate and Cooling Solutions
A heatspreader plate assembly is available for the Q7ALx2. The heatspreader plate is NOT a heat sink. The
heatspreader plate is a Qseven® standard thermal interface to accompany a heat sink or external cooling device(s).
The aluminum slugs and thermal pads on the underside of the heatspreader plate act as thermal interfaces between
the heatspreader plate and the major heat-generating components on the Q7ALx2 module. Approximately 80 % of
the module’s dissipated power is conducted to the heatspreader plate and can be removed by the cooling solution.
Figure 9: Heatspreader Plate Assembly
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Heatspreader plate
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Thermal pad
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Aluminum slug
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Thermal pad
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Thermal pad
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Thermal pad
An external cooling device must be used to maintain the heatspreader plate at the specified operating temperature.
Under worst-case conditions, the cooling device must maintain an ambient air temperature and the heatspreader
plate temperature, on any spot of the heatspreader's surface, must remain under the temperature grade’s maximum
specification of:
60°C for commercial grade modules
75°C for extended temperature grade modules
85°C for industrial temperature grade module
Hot Surface
A Heatspreader plate or heatsink can get hot. To avoid burns and personal injury:
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Do not touch the when the product is operating
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Allow the product to cool before handling
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Wear protective gloves
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Switch off the product when not in use
Operate only with an external cooling solution
To maintain the surface temperature of the heatspreader plate under the maximum
temperature specified an external cooling device such as a heatsink must be used.
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