Power Supply - ST STM32G474E-EVAL User Manual

Hardware layout and configuration
Table 4. Setting of configuration I/Os for PE2, PE3, PE4, and PE5 (continued)
Element
SB28
SB97
Warning:
5.3

Power supply

The STM32G474E-EVAL board is designed to be powered by a 5 V DC power source. It
incorporates a precise PTC and TRANSIL to protect the board from damage due to a wrong
power supply. One of the following five 5 V DC power inputs can be used, upon appropriate
board configuration:
•
CN25 power jack:
Marked PSU on the board (JP12 jumper setting on E5V on the silkscreen). The positive
pole is on the center pin as illustrated in
The external power supply from the CN25 power jack is from 5 to 18 V input voltage.
The dedicated DC/DC regulator ST1S41PHR is used for about 5.2 V output voltage
and provided up to 3 A current.
• CN21 USB Micro-B receptacle of STLINK-V3E with enumeration:
Up to 500 mA can be supplied to the board (JP12 jumper setting on STLK on the
silkscreen).
Offers the enumeration feature described in
• CN21 USB Micro-B receptacle of STLINK-V3E without enumeration:
Up to 1000 mA can be supplied to the board directly without enumeration (JP12 jumper
setting on CHGR on the silkscreen).
•
CN22 USB Type-C
Marked TYPE-C on the board (JP12 jumper setting on U5V on the silkscreen). Up to
500 mA can be supplied to the board in this way.
•
Pin 49 of CN5 and pin 49 of CN6 extension connectors for custom daughterboard:
Marked 5V_D on the board (JP12 jumper setting on D5V on the silkscreen).
The LD6 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 the STM32G474E-EVAL
are derived from that 5 V line.
Table 5 describes the settings of all jumpers related to powering the STM32G474E-EVAL
and extension board. VDD_MCU is STM32G474QET6 digital supply voltage line. It can be
connected to a fixed 3.3 V or with an adjustable voltage regulator controlled by the RV3
potentiometer and producing a range of voltages between 1.62 V and 3.6 V.
18/66
Setting
SB28 ON Default setting.
SB97 OFF PE5 connects to TRACED2
SB28 OFF
PE5 connects to MC1_DissipativeBrake
SB97 ON
Generally, we have one default setting for the best
performance of many shared features, but it is easy for users
to configure features, as we have many default settings for
MCU ports (solder bridge or resistor is soldered).
®
receptacle of USB PD interface:
UM2514 Rev 5
Configuration
Figure 22.
Section 5.3.1.
UM2514