DocID025237 Rev 1
7/22
UM1672
Hardware overview
21
2 Hardware
overview
Figure 2. HW overview
2.1 Power
supply
The discovery board allows wide supply configurations, such as: 12 V (external PSU) or 5 V
(USB supply).
2.1.1
12 V DC power supply
12 V voltage can be used to supply the board
(a)
using the PSU output barrel connector
(+12 V) or directly from 2x36 headers.
The PSU connector shall be center positive with 2.1 mm inner diameters.
The diode D4 protects the boards against the battery reverse connection.
The jumpers S1 and S2 allow choosing the desired 12 V supply.
Table 1
depicts the jumper
configuration:
'HEXJJHURQERDUG
86%LQSXW
63&%/
5HVHWDQG
8VHU SXVK
EXWWRQ
8VHU/('V
3RWHQWLRPHWHU
-7$*
FRQQHFWRU
9/('
[SLQDUUD\
[SLQDUUD\
9LQSXW
9ROWDJH
5HJXODWRU
("1(3*
a.
If the board is supplied with +12 V, the SMD solder jumpers J19 and J20 can be left opened.