Power Supply; Input Voltage; Voltage Monitoring; Power Consumption - TQ-Systems TQMLX2160A Preliminary User's Manual

4.10

Power supply

4.10.1

Input voltage

The TQMLX2160A requires a 5 V supply with a maximum tolerance of ±5 %.
4.10.2

Voltage monitoring

All voltages generated on the TQMLX2160A are monitored.
4.10.3

Power consumption

The given power consumptions have to be seen as typical values. The power consumption of the TQMLX2160A strongly
depends on the application, the mode of operation, the environmental temperature, and the operating system.
The power supply of the carrier board should be designed for an output power of up to 60 watts.
The following table shows typical power consumption of the TQMLX2160A under various operating conditions.
Table 9: TQMLX2160A power consumption @ 5 V
Mode of operation
U-Boot, idle
U-Boot, memory test
Linux, idle
Linux, 100 % CPU load
U-Boot, idle
U-Boot, memory test
Linux, idle
Linux, 100 % CPU load
Attention: Destruction or malfunction, TQMLX2160A heat dissipation
The TQMLX2160A 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 LX2160A must be taken into
consideration when connecting the heat sink.
The LX2160A is the highest component. Inadequate cooling connections can lead to overheating of
the TQMLX2160A and thus malfunction, deterioration or destruction.
4.11

TQMLX2160A connectivity

4.11.1

Interface impedances

Depending on the signal, the following impedances are used on the TQMLX2160A and recommended for the carrier board.
Table 10: TQMLX2160A interface impedances
Interface Impedance TQMLX2160A
USB 3.0
SerDes 1
SerDes 2
SerDes 3
The layout guidelines of the corresponding standards are to be taken note of for the mainboard design.
Preliminary User's Manual l TQMLX2160A UM 0002 l © 2020, TQ-Systems GmbH
TQMLX2080A
(TBD)
(TBD)
(TBD)
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90 Ω, differential
100 Ω, differential
100 Ω, differential
90 Ω, differential
TQMLX2120A TQMLX2160A
(TBD)
(TBD)
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Recommendation for carrier board
90 Ω ±15 %, differential
100 Ω ±10 %, differential
100 Ω ±10 %, differential
90 Ω ±10 %, differential
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T
amb
36 W
38 W
+25 °C
22 W
48 W
38 W
40 W
+85 °C
24 W
50 W