STMicroelectronics STEVAL-L3751V12, User Manual

Page: 15 / 24

10 Schematic diagrams
Figure 29. STEVAL-L3751V12 circuit schematic
QH
STL90N10F7
5
4
1
6
2 3
7 89
R16
6k65
C8
10uF
FB
D2 BAT46-SOD-323
VCC
R25 0
TRIM
C45
10uF
C50
10uF
R11
0
C37
10uF
VIN
Vout
R23 0
I NPUT DECOUPLI NG
C53
10uF
R3
0
K* 0. 8=Vout
K=1+( ( R11+R12/ / R21) / R13)
J5
Strip 10
1
2
3
4
5
6
7
8
9
10
+
C31
NC
C39
10uF
PGOOD
L1 NC
C58
NC
C9
10uF
L5 NC
R20
20k
C43
10uF
L3 NC
C48
10uF
AGND
QL
STL110N10F7
5
4
1
6
2 3
7 89
HO
D1
STPS6M100DEE
C12
10uF
R15
2R2
C41
10uF
C14
10uF
R21
1k5
C1
0.1uF
EMI Fi l t er
R7
20k
SS/TRK
R22
0
C56
NC
Vout
PGOOD
Vout
C34
10uF
C15
100pF
C52
1800pF
C21
10uF
FS2
PGND
C24
10uF
R24
0
SYNCIN
HS
SS/TRK
C5
15pF
C23
10uF
OUTPUT DECOUPLI NG TOP
RT
C46
10uF
VoutS
C28
10uF
SW
BOTTOM
R19
18k
C36
10uF
C16
5600pF
C26
10uF
PGNDs
R9
200k
LS
C18
10nF
L2
8.2uH
1 2
C6
10uF
EN/UVLO
C7
10uF
SYNCOUT
R10
46.4k
C17
150pF
C38
10uF
U1
L3751
EN/UVLO
1
RT
2
SS/TRK
3
COMP
4
FB
5
AGND
6
SYNCOUT
7
SYNCIN
8
N
C
b
9
PGOOD
10
ILIM
11
PGND
12
LO
13
VCC
14
E
P
15
N
C
a
16
BST
17
HO
18
SW
19
VI
N
20
Ex
P
21
C33
10nF
SYNCIN
R17
NC
C44
10uF
C49
10uF
R12
13k3
OUTPUT DECOUPLI NG TOP
C25
10uF
AGND
C29
10uF
C54
47nF
LO
R18 NC
C10
10uF
R13
2k49
C27
10uF
C19
10uF
C3
1uF
SYNCOUT
AGND
C40
10uF
C13
10uF
Compesat i onLoop
COMP
C20
10uF
FS1
VIN
C11
10uF
VCC
C22
10uF
C57
NC
R14
180
L4
ZC1818-822 VCC
TOP
C42
10uF
C47
10uF
C2 100nF
ILIM
C32
100pF
R1
2.2
+ C30
100uF
R8
20k
C35
10uF
C55
NC
BST
AGND
FS4
Vout
EN/UVLO
R5 510
UM3024
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Rev 1
page 15/24
UM3024
Schematic diagrams