User's Manual l TQMaRZG2x UM 0100 l © 2021, TQ-Systems GmbH
Page 39
6.4
Climatic and operational conditions
The possible temperature range strongly depends on the installation situation (heat dissipation by heat conduction and
convection); hence, no fixed value can be given for the TQMaRZG2x.
In general, a reliable operation is given when following conditions are met:
Table 43: Climate and operational conditions
Parameter
Range
Remark
Ambient temperature TQMaRZG2x
–40 °C to +85 °C
–
T
J
temperature RZ/G2x
–40 °C to +115 °C
–
Case temperature LPDDR4
–40 °C to +95 °C
–
Storage temperature TQMaRZG2x
–40 °C to +100 °C
–
Relative humidity (operating / storage)
10 % to 90 %
Not condensing
Detailed information concerning the CPUs’ thermal characteristics is to be taken from the Renesas Reference Manuals (1).
Attention: Destruction or malfunction, TQMaRZG2x heat dissipation
The TQMaRZG2x belongs to a performance category in which a cooling system is 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 RZ/G2x must be taken into consideration when
connecting the heat sink. The RZ/G2x is not necessarily the highest component.
Inadequate cooling connections can lead to overheating of the TQMaRZG2x and thus malfunction,
deterioration or destruction.
6.5
Operational safety and personal security
Due to the occurring voltages (
≤
5 V DC), tests with respect to the operational and personal safety have not been carried out.
6.6
Reliability and service life
For the three derivatives of the TQMaRZG2x, MTBFs were calculated with a constant error rate @ +40 °C, Ground Benign:
•
TQMaRZG2H:
567,716 hours
•
TQMaRZG2M:
588,726 hours
•
TQMaRZG2N:
627,066 hours
The TQMaRZG2x is designed to be insensitive to vibration and impact.
High quality industrial grade connectors are assembled on the TQMaRZG2x.
