UM0527
General description
17/66
1.1.10 Power
supply
Figure 8.
Power supply
D4
3
STTH1
0
2
A
GND
ON/
OF
F
S
W
_
ONP
D2
1
BAS1
6
U2
5
SFH
6
2
0
A
-2
C1
1
2
22nF
VBAT
GND
+
VOUT
C2
7
100nF
VDD
IN
H
3
GND
7
OUT
1
FB
5
VREF
6
S
YNC
2
COMP
4
VCC
8
U2
6
L
5970D
D4
5
STPS1
L6
0
A
GND
C6
1
100pF
R5
8
22k
L1
2
330uH
/
0.9A
S
W
_
ONP
AC_
IN1
R1
5
3
36k
ON/
OF
F
R1
1
6
3.3k
AC_
IN2
GND
R1
5
2
22R
1
W
+5V
d
c
V
D
D
pow
er
supply
control
C3
0
100nF
B
y
button
C2
9
100nF
V
o
lta
ge
F
rom
B
atte
ry
C2
8
100nF
V
o
lta
ge
F
rom
A
C
/D
C
C
ha
rge
r
+15V
dc
POWER
S
UPPLY
VCCPU
VCC
IN
3
OUT
2
GND
1
L
D
1086
U
2
7
L
D
1086V
50
GND
GND
GND
GND
R7
2
200k
GND
GND
GND
U7
PDTC1
1
4
ET
100k
100k
100k
100k
RAD1
3
H
eat
si
nk
R7
3
200k
R7
4
200k
R7
5
200k
C1
1
0
1uF
/
50V
GND
C1
0
4
22uF
/35V
C
113
47uF
/25V
C
114
47uF
/25V
C
105
100uF
/35V
D4
2
STTH1
0
2
A
D4
4
S
T
T
H
102A
L7
4.7uH
VP
P
AC_
IN1
AC_
IN2
+
VOUT
VBAT
VDD
VCC
VCCP
U
VP
P
GND
GND
+
VOUT
VBAT
DL1
LED
R1
7
5
2.2k
GND
VCC
1
J17
6.3x0.8
1
J3
6.3x0.8
BLACK
BLACK
2
1
3
4
BR2
B
600C
1500
F3
1,25A
GND
C4
1
100nF
GND
GND
GND
C4
5
10uF
/100V
C4
6
47uF
/25V
D5
1
S
T
T
H
102A
GND
R9
6
33k
D5
0
B
Z
V
55C
22
Q1
6
BDX5
3
C