DocID025151 Rev 2
11/70
UM1668
Hardware layout and configuration
69
2.2 Power
supply
The STM32439I-EVAL evaluation board is designed to be powered by a 5 V DC power
supply and is protected by PolyZen from a wrong power plug-in event. It is possible to
configure the evaluation board to use any of following six sources for the power supply:
•
5 V DC power adapter connected to CN18, the power jack on the board (Power Supply
Unit on silk screen of JP12(E5V)).
•
5 V DC power with 500 mA limitation from CN21, the USB type B connector of ST-
LINK/V2 (USB 5 V power source on silkscreen of JP12(STlk)).
•
5 V DC power with 500 mA limitation from CN9, the USB OTG2 HS Micro-AB
connector (USB 5V power source on silkscreen of JP12 (HS)).
•
5 V DC power with 500 mA limitation from CN14, the USB OTG1 FS Micro-AB
connector (USB 5V power source on silkscreen of JP12 (FS1)).
•
5 V DC power with 500 mA limitation from CN15, the USB OTG2 FS Micro-AB
connector (USB 5 V power source on silkscreen of JP12 (FS2)).
•
5 V DC power from CN6 & CN7, the extension connectors for daughterboard
(daughterboard power source on silkscreen of JP12 (D5V)).
The power supply is configured by setting the related jumpers JP2, JP8 and JP12 as
described in
Table 2
.
Table 2. Power related jumpers
Jumper
Description
JP2
JP2 is used to measure MCU current consumption manually by multimeter.
Default setting: Fitted
JP8
Vbat is connected to +3.3V when JP8 is set as shown to the right:
(Default setting)
Vbat is connected to battery when JP8 is set as shown to the right:
JP12(continued
on next page)
JP12 is used to select one of the six possible power supply resources.
For power supply from USB connector of ST-LINK/V2 (CN21) to
STM32439I-EVAL
only, JP12 is set as shown to the right:
(Default setting)
For
power supply jack
(CN18) to the
STM32439I-EVAL
only,
JP12 is set as shown to the right:
For power supply from the daughterboard connectors (CN6 &
CN7) to
STM32439I-EVAL
only, JP12 is set as shown to the
right:
1 2 3
1 2 3
+6
)6
)6
'9
368
67ON
+6
)6
)6
'9
368
67ON
+6
)6
)6
'9
368
67ON
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