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6.3
Power supply
6.3.1
5 V power supply general view
The STM32L562E-DK Discovery kit is designed to be powered from 5 V DC power source.
One of the following 5 V DC power inputs can be used, upon an appropriate board configuration:
•
5V_STLK provided by a host PC connected to CN17 through a Micro-B USB cable (default
configuration)
•
5V_VIN provided by an external 7-12V power supply connected to CN18 pin 8 (ARDUINO
•
5V_UCPD provided by a host PC connected to CN15 through a USB Type-C
•
5V_PM provided by a host PC connected to CN16 through a Micro-B USB cable (This one is used for the
energy meter function).
•
5V_CHG provided by a 5 V USB charger connected to CN17 through a Micro-B USB cable
•
5V_DC provided by an external 5V_DC source on ARDUINO
connector for 5 V selection
When 5V_VIN, 5V_CHG, 5V_DC or 3V3 is used to power the STM32L562E-DK board, this power source must
comply with the standard EN-60950-1: 2006+A11/2009 and must be Safety Extra Low Voltage (SELV) with limited
power capability
LD12 Green LED turns on when the voltage on the power line marked as 5 V is present. All supply lines required
for the operation of the components on STM32L562E-DK are derived from that 5 V line.
When the power supply is external 3V3 or 5V_CHG on CN17, the STLINK-V3E can not be used.
Table 7
describes the 5 V power supply capabilities.
Input power
name
5V_STLK
5V_VIN
5V_UCPB
5V_PM
5V_CHG
5V_DC
UM2617 - Rev 2
Table 7.
Input voltage
Connector pins
range
CN17 pin 1
4.75 to 5.25 V
JP4 [1-2]
CN18 pin 8
7 to 12 V
JP4 [3-4]
CN15
4.75 to 5.25 V
JP4 [5-6]
CN16 pin 1
4.75 to 5.25 V
JP4 [7-8]
CN17 pin 1
4.75 to 5.25 V
JP4 [9-10]
CN18 pin 5
JP4 pin
4.75 to 5.25 V
2/4/6/8/10
JUMPER OFF
®
CN18 pin 5, or directly after the JP4
Power supply capabilities
Max.
current
The maximum current depends on the USB enumeration:
500 mA
•
100 mA without enumeration
•
500 mA with correct enumeration
From 7 V to 12 V only and input current capability is
linked to input voltage:
•
800 mA input current when VIN=7 V
-
•
450 mA input current when 7V<VIN<9 V
•
250 mA input current when 9 V<VIN<12 V
The maximum current depends on the USB host used to
1 A
power the board.
The maximum current depends on the USB enumeration:
500 mA
•
100 mA without enumeration.
•
500 mA with correct enumeration
The maximum current depends on the USB charger used
-
to power the board.
The maximum current depends on the 5V_DC used to
-
power the board.
UM2617
Power supply
®
)
™
cable.
Limitation
page 13/61
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