Thermal Management; Structural Requirements; Notes Of Treatment; Software - TQ-Systems TQMLS1028A User Manual

5.6

Thermal management

To cool the TQMLS1028A, approximately 6 Watt must be dissipated, see Table 9 for typical power consumption.
The power dissipation originates primarily in the LS1028A, the DDR4 SDRAM and the buck regulators.
The power dissipation also depends on the software used and can vary according to the application.
Attention: Destruction or malfunction, TQMLS1028A heat dissipation
The TQMLS1028A 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 LS1028A must be taken into consideration when
connecting the heat sink.
The LS1028A is not necessarily the highest component. Inadequate cooling connections can lead to
overheating of the TQMLS1028A and thus malfunction, deterioration or destruction.
For the TQMLS1028A, TQ-Systems offers a suitable heat spreader (MBLS1028A-HSP) and a suitable heat sink (MBLS1028A-KK).
Both can be purchased separately for larger quantities. Please contact your local sales representative.
5.7

Structural requirements

The TQMLS1028A is held in its mating connectors by the 240 pins with a retention force of approximately 24 N.
5.8

Notes of treatment

To avoid damage caused by mechanical stress, the TQMLS1028A may only be extracted from the carrier board by using the
extraction tool MOZI8XX that can also be obtained separately.
Note: Component placement on carrier board
2.5 mm should be kept free on the carrier board, on both long sides of the TQMLS1028A
for the extraction tool MOZI8XX.
6.

SOFTWARE

The TQMLS1028A is delivered with a preinstalled boot loader and a
combination of TQMLS1028A and MBLS1028A.
The boot loader provides TQMLS1028A-specific as well as board-specific settings, e.g.:
• LS1028A configuration
• PMIC configuration
• DDR4 SDRAM configuration and timing
• eMMC configuration
• Multiplexing
• Clocks
• Pin configuration
• Driver strengths
More information can be found in the
User's Manual l TQMLS1028A UM 0101 l © 2020, TQ-Systems GmbH
Support Wiki for the TQMLS1028A.
BSP provided by TQ-Systems, which is configured for the
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