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
™
cable.
•
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
®
CN18 pin 5, or directly after the JP4
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.
describes the 5 V power supply capabilities.
Table 7.
Power supply capabilities
Input power
name
Connector pins
Input voltage
range
Max.
current
Limitation
5V_STLK
CN17 pin 1
JP4 [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_VIN
CN18 pin 8
JP4 [3-4]
7 to 12 V
-
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
5V_UCPB
CN15
JP4 [5-6]
4.75 to 5.25 V
1 A
The maximum current depends on the USB host used to
power the board.
5V_PM
CN16 pin 1
JP4 [7-8]
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_CHG
CN17 pin 1
JP4 [9-10]
4.75 to 5.25 V
-
The maximum current depends on the USB charger used
to power the board.
5V_DC
CN18 pin 5
JP4 pin
2/4/6/8/10
JUMPER OFF
4.75 to 5.25 V
-
The maximum current depends on the 5V_DC used to
power the board.
UM2617
Power supply
UM2617
-
Rev 2
page 13/61