UM0527
Technical description
35/66
Figure 15.
DC/DC converter
R6
0
10R
Q6
STP75NF75
GND
D2
6
STTH8R06D
D2
8
STTH8R06D
D2
5
STTH8R06D
D2
7
STTH8R06D
R5
3
22k
GND
VAKK
VAKK
R6
1
1
0
R
Q7
STP75NF75
GND
R5
5
22k
GND
DC/
DC
CONVERTER
C6
4
3300uF
/35V
GND
R5
9
1
0
R
R6
2
10R
Q8
STP75NF75
Q5
STP75NF75
R5
6
22k
GND
R5
4
22k
GND
GND
GND
A
1
D
2
C
B
12
11
TI
1
T
I700/24/1v01
C6
6
470uF
/63V
GND
R3
5
1
k
3
W
D2
9
S
T
T
H
302S
D3
0
S
T
T
H
302S
C8
6
1nF1kV
R6
6
330R2W
C8
7
330nF
GND
R1
8
7.5k
GND
C3
4
1nF
C3
3
4.7nF
GND
R2
8
0R
OUT_
B
OUT_
A
R1
9
100k
VDD
R3
1
36k
GND
Vr
ef
16
Cl
o
ck
4
Ct
5
Rt
6
Di
sc
h
7
Sync
3
E
rrA
mp+
2
E
rrA
mp-
1
So
ft
St
art
8
VCC
15
VC
13
S
h
u
tDo
wn
10
GND
12
Ou
tB
14
Ou
tA
11
E
rrA
mpO
u
t
9
U
3
S
G
3525A
R1
7
33R
R3
6
3.3k
Vr
ef
GND
Vr
ef
R3
0
5.6k
GND
R7
0
200k
C6
7
10nF
GND
HVDC
SH
D
VDCDC
L1
1.5uH
/
10A
L2
1.5uH
/
10A
R7
1
200k
R3
2
390k
C6
8
10nF
GND
GND
GND
R6
9
200k
R6
8
200k
R2
9
6.8k
GND
R6
7
330R2W
RAD1
0
H
eat
si
nk
RAD8
H
eat
si
nk
RAD7
H
eat
si
nk
RAD9
H
eat
si
nk
RAD5
H
eat
si
nk
RAD6
H
eat
si
nk
R3
4 1k
3W
U4
P
D
T
C
114E
T
R3
3
47R
C6
2
10uF
/50V
C3
2
100uF/25V
C1
2
100nF
GND
GND
GND
C5
0
100pF
GND
C6
5
3300uF
/35V
GND
C1
3
100nF
GND
C1
5
100nF
GND
C1
4
100nF
GND
T
I700/24/2v01
0R
1.5nF1kV
STTH803D
STTH803D
STTH803D
STTH803D
100k
100k
100k
100k
100k
30k
120V
ac
M
o
del
230V
ac
M
o
del
VDCDC
SH
D
HVDC
VDD
VDD
VAKK
VAKK
GND
GND
C7
2
100nF
GND
C4
3
1nF
GND
1uF