ST STM32U575I-EV, Руководство пользователя, Страница: 25 / 105

7.8 Power supply
7.8.1 5 V power supply general view
The STM32U575I-EV Evaluation board is designed to be powered from a 5 V DC power source. One of the
following five 5 V DC power inputs can be used, upon an appropriate board configuration:
•
5V_STLK from CN26 Micro-B USB receptacle of STLINK-V3E (default)
• 5V_EXT from CN25 power jack marked 5V on the board. The positive pole is on the center pin as illustrated
in
Figure 16 .
• 5V_UCPD from CN1 USB Type-C
®
receptacle of USB user interface
• 5V_DC from pin 49 of CN9 extension connectors for the custom daughterboard
• 5V_CHG from CN26 Micro-B USB receptacle of STLINK-V3E, in case of wall charger (no-enumeration)
No external power supply is provided with the board.
When 5V_EXT or 5V_DC is used to power the board, this power source must comply with the standard
EN 60950
‑
1:2006+A11/2009+A1/2010+A12/2011+A2/2013, EN 62368
‑
1 (2014+A11/2017) and must be safety
extra
‑
low voltage (SELV/ES1) with limited power capability (LPS/ES2).
LD2 green LED turns on when the voltage on the power line marked as 5V is present. All supply lines required for
the operation of the components on STM32U575I-EV are derived from that 5V line.
5 V / 500 mA is the standard to power the STM32U575I-EV Evaluation board.
Table 14 describes the 5 V power supply capabilities.
Table 14. Power source capabilities
Input Power
name
Connector pins Voltage range
Max.
current
Limitation
5V_STLK
CN26 pin 1
JP25 [1-2]
4.75 to 5.25 V
500 mA
The maximum current depends on the USB
enumeration:
•
100 mA without enumeration
• 500 mA with correct enumeration
5V_EXT
C25 pin 1
JP25 [3-4]
-
The maximum current depends on the power
source.
5V_UCPD
CN1
JP25 [5-6]
1 A
The maximum current depends on the
USB Type-C
®
host used to power the
STM32U575I-EV board.
5V_DC
CN9 pin 49
JP25 [7-8]
-
The maximum current depends on the power
source.
5V_CHG
CN26 pin 1
JP25 [9-10]
-
The maximum current depends on the USB
wall charger used to power the board (no
enumeration, no current protection).
STM32U575I-EV
Power supply
UM2854 - Rev 1
page 25/105