Hardware layout and configuration UM2407
22/48 UM2407 Rev 1
The Nucleo-144 board and its shield boards can be powered in three different ways from an
external power supply, depending on the voltage used. The three power sources are
summarized in the
Table 6.
Figure 11. Power supply input from VIN (7 V to 12 V, 800 mA max)
Note: See Section 6.4.6 about debugging when using an external power supply.
6.4.3 External power supply input 5V_EXT (5 V, 500 mA max)
When STM32H7 Nucleo-144 board is power supplied by EXT (see Table 7 and Figure 12),
the jumper configuration must be the following: Jumper JP2 on pin 5-6 "EXT"
Note: See Section 6.4.6 about debugging when using an external power supply.
Table 6. External power sources: VIN (7 V to 12 V)
Input power
name
Connector pins Voltage range Max current Limitation
V
IN
CN8 pin 15 CN11
pin 24
7 V to 12 V 800 mA
From 7 V to 12 V only and input current
capability is linked to input voltage:
– 800 mA input current when V
IN
=7 V
– 450 mA input current when 7 V<V
IN
<9 V
– 250 mA input current when 9 V<V
IN
<12 V
Table 7. External power sources: 5V_EXT
Input power name Connector pins Voltage range Max current
EXT CN11 pin 6 4.75 V to 5.25 V 500 mA
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