Kontron COMe-cP2020 - Manual (Page 76)

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COMe-P2020 User Guide
76
5 Thermal
There are different cooling solutions for the standard (COMe-cP2020c) and the extended temperature board variant (COMe-
cP2020i). The standard board variant is populated by a heatspreader and the extended temperature board variant is popu-
lated by a heat sink with fins.
Both variants are able to run without any additional cooling solution (convection cooled) up to 50°C ambient temperature.
For life time issues it is recommended to operate the board below 35°C ambient temperature if there is no heat sink and no
air flow.
5.1 Cooling Solution COMe-cP2020c
The thermal concept of the COMe-cP2020c is based on a specially designed full-board heatspreader which contacts the main
hot spots of the board and therefore provides optimal heat transfer from the board's top surface.
The heatspreader plate is NOT a heat sink but is sufficient to cool the standard board variant. Nevertheless the
heatspreader can be used as a COM Express standard thermal interface for use with a heat sink or other cooling solution
bolted to the heatspreader with four skews.
To determine cooling performance, the module temperature can be measured at the temperature reference point indicated
in the figure below.
The cooling solution must in any event maintain a heatspreader plate temperature of 85°C or less.
Figure 5-1: Cooling Solution COMe-cP2020c
reference
measurement
point