User's Manual l MBa8x UM 0100 l © 2021, TQ-Systems GmbH
Page 46
6.
SAFETY REQUIREMENTS AND PROTECTIVE REGULATIONS
6.1
EMC
As the MBa8x is a development platform, no explicit EMC tests were performed.
During the development of the MBa8x the standard DIN EN 55022:2010 limit class A was taken into account.
6.2
ESD
ESD protection is provided on most interfaces of the MBa8x.
The MBa8x schematics show, which interfaces provide ESD protection.
6.3
Operational safety and personal security
Tests for operational safety and personal protection were not carried out due to the voltages ≤48 V DC.
7.
CLIMATIC AND OPERATIONAL CONDITIONS
In general reliable operation is given when the following conditions are met:
Table 32:
Climatic and operational conditions MBa8x
Parameter
Range
Remark
Ambient temperature
-20 °C to +65 °C
Without TQMa8x module
Ambient temperature
-20 °C to +59 °C
With TQMa8x module (passively cooled)
Storage temperature
–40 °C to +70 °C
With CR2032 battery
Attention: TQMa8x heat dissipation
The i.MX 8 CPU belongs to a performance category in which a cooling system could be essential.
It is the user’s sole responsibility to define a suitable heat sink (weight and mounting position)
depending on the specific mode of operation (e.g., dependence on clock frequency, stack height,
airflow, and software).
Particularly the tolerance chain (PCB thickness, board warpage, BGA balls, BGA package, thermal pad,
heatsink) as well as the maximum pressure on the TQMa8x must be taken into consideration when
connecting the heat sink.
The TQMa8x is not the highest component. Inadequate cooling connections can lead to overheating
of the TQMa8x and thus malfunction, deterioration or destruction.
7.1
Protection against external effects
Protection class IP00 was defined for the MBa8x. There is no protection against foreign objects, touch or humidity.
7.2
Reliability and service life
No detailed MTBF calculation has been done for the MBa8x.
The MBa8x is designed to be insensitive to vibration and impact.
