User's Manual l TQMa335xL UM 0101 l © 2019, TQ-Systems GmbH
Page 34
6.4
Climatic and operational conditions
The temperature range, in which the TQMa335xL works reliably, strongly depends on the installation situation (heat dissipation
by heat conduction and convection); hence, no fixed value can be given for the whole assembly.
In general, a reliable operation is given when following conditions are met:
Table 41:
Climate and operational conditions extended temperature range –25 °C to +85 °C
Parameter
Range
Remark
Chip temperature AM335x
–40 °C to +95 °C
Tj = +105 °C
Environmental temperature AM335x
–40 °C to +85 °C
–
Chip temperature PMIC
–40 °C to +125 °C
Tj = +150 °C
Environmental temperature PMIC
–40 °C to +85 °C
–
Case temperature DDR3L SDRAM
–40 °C to +95 °C
–
Case temperature other ICs
–25 °C to +85 °C
–
Permitted storage temperature TQMa335xL
–40 °C to +85 °C
–
Relative humidity (operating / storage)
10 % to 90 %
Not condensing
Table 42:
Climate and operational conditions industrial temperature range –40 °C to +85 °C
Parameter
Range
Remark
Chip temperature AM335x
–40 °C to +95 °C
Tj = +105 °C
Environmental temperature AM335x
–40 °C to +85 °C
–
Chip temperature PMIC
–40 °C to +125 °C
Tj = +150 °C
Environmental temperature PMIC
–40 °C to +85 °C
–
Case temperature DDR3L SDRAM
–40 °C to +95 °C
–
Case temperature other ICs
–40 °C to +85 °C
–
Permitted storage temperature TQMa335xL
–40 °C to +85 °C
–
Relative humidity (operating / storage)
10 % to 90 %
Not condensing
Detailed information concerning the thermal characteristics of the AM335x is to be taken from the Texas Instruments Data
Sheets (1), (3), and (5).
6.5
Reliability and service life
No detailed MTBF calculation has been done for the TQMa335xL.
Detailed information concerning the service life of the AM335x under different operational conditions is to be taken from the
Texas Instruments Data Sheets (1), (3), and (5).
