A
A
B
B
C
C
D
D
E
E
1
1
2
2
3
3
4
4
close to LDO
close to DC/DC
VGS=20V
VDS=30V
POWER INPUT
close to LDO
REGO1
TR_B1
REGO2
VC12
PCON
27.5V
PCON
-24V
MCU_3V3
VCC5V
33_V
AMP
FM33V
VCC5V_D
VC12
DVCC3
+12V
33V
+12V_D
-24V
V_-24V
VCC5V
VCC5V
VCC5V_D
+12V_D
33V_FM
+12V_D
+12V
33V
33_V
33V
33V_FM
VFD_12V_D
S
MCU_3V3
VCC5V_D
33V_FM
S
Power_EN
REGO2
TR_B2
TR_B1
REGO1
VC12 4
POWER_FRQ2
8
POWER_FRQ1
8
PCON
8
Power_EN
DC FRQ
9
R205
100K
R205
100K
Q5
PNP_3CA8550C
Q5
PNP_3CA8550C
Q13
N_AP2316
Q13
N_AP2316
G
D
S
R152
470
R152
470
R764
100
R764
100
+
470U
F/
35V
C
E
3
+
470U
F/
35V
C
E
3
FB4
500/800mA
FB4
500/800mA
R235
47K
R235
47K
R27
10K
R27
10K
XP8
6PIN/2.0mm/120mm
XP8
6PIN/2.0mm/120mm
1
1
2
2
3
3
4
4
5
5
6
6
R22
2.2
R22
2.2
ZD1
ZM
M
12V/
12V
ZD1
ZM
M
12V/
12V
R153
33K/1%
R153
33K/1%
C766
1uF/10V/Y5V
C766
1uF/10V/Y5V
C1
5
0.
1uF/
50V/
X7R
C1
5
0.
1uF/
50V/
X7R
FB801
70/3A
FB801
70/3A
R5
47
R5
47
C
175
0.
1uF/
25V/
Y5V
C
175
0.
1uF/
25V/
Y5V
R24
47K
R24
47K
XP1
4PIN/2.0mm/120mm
XP1
4PIN/2.0mm/120mm
1
1
2
2
3
3
4
4
R34
5.6/1W
R34
5.6/1W
+
100uF/16V
CE7
+
100uF/16V
CE7
R18
20K
R18
20K
R33
51K
R33
51K
C20
0.
1uF/
50V/
X7R
C20
0.
1uF/
50V/
X7R
R6
10
R6
10
C
765
0.
1uF/
50V/
X7R
C
765
0.
1uF/
50V/
X7R
FB867 120/1A
FB867 120/1A
C3
4
0.
1uF/
16V/
X7R
C3
4
0.
1uF/
16V/
X7R
Q2
NPN_3DG3904M
Q2
NPN_3DG3904M
R10
0
R10
0
Q28
PNP_3CG3906M
Q28
PNP_3CG3906M
C21
1uF/
/50V/
X7R
C21
1uF/
/50V/
X7R
+
100UF/50V
CE6
+
100UF/50V
CE6
Q7
NPN_3DG3904M
Q7
NPN_3DG3904M
R4
47K
R4
47K
R124
2.2
R124
2.2
ZD752
BZV55C3V9/3.9V
ZD752
BZV55C3V9/3.9V
L491
10uH/100mA
L491
10uH/100mA
R39 10K
R39 10K
R21
2.2
R21
2.2
C3
9
0.
1uF/
16V/
X7R
C3
9
0.
1uF/
16V/
X7R
Q6
PNP_3CA8550C
Q6
PNP_3CA8550C
R765
470
R765
470
33_V
33_V
R36
20K/1% R36
20K/1%
R14
0
R14
0
R29
1.8/2W
R29
1.8/2W
R32
47K
R32
47K
C33
1000pF/
50V/
X7R
C33
1000pF/
50V/
X7R
R766
220
R766
220
C38
0.
1uF/
50V/
X7R
C38
0.
1uF/
50V/
X7R
C
767
0.
1uF/
25V/
X7R
C
767
0.
1uF/
25V/
X7R
R38
4.7K
R38
4.7K
R1
1
18K/
1%
R1
1
18K/
1%
R123
2.2
R123
2.2
R12
NC/100
R12
NC/100
ZD6
ZMM27/27V
ZD6
ZMM27/27V
C194
1000pF/
50V/
X7R
C194
1000pF/
50V/
X7R
C35
0.
1uF/
50V/
X7R
C35
0.
1uF/
50V/
X7R
C26
1uF/
10V/
Y5V
C26
1uF/
10V/
Y5V
+
CE21
220uF/
16V
+
CE21
220uF/
16V
GND
GND
C2
0.1uF/50V/X7R
C2
0.1uF/50V/X7R
C32
1000pF/
50V/
X7R
C32
1000pF/
50V/
X7R
U24
78L05
U24
78L05
OUT
1
GND
2
IN
3
R37
12K/1%
R37
12K/1%
R1
9
5.
6K/
1%
R1
9
5.
6K/
1%
R23
220K
R23
220K
C4
0.1uF/50V/X7R
C4
0.1uF/50V/X7R
U14
TJ4203GSF5-ADJ
U14
TJ4203GSF5-ADJ
VIN
1
ADJ/SENSE
4
EN
3
VOUT
5
2
GND
FB19
500/800mA
FB19
500/800mA
C19
0.
1uF/
50V/
X7R
C19
0.
1uF/
50V/
X7R
+
47uF/16V
CE35
+
47uF/16V
CE35
C
944
100pF/
50V/
N
P0
C
944
100pF/
50V/
N
P0
D5
SK34/
60V/
3A
D5
SK34/
60V/
3A
FB30 70/3A
FB30 70/3A
ZD753
ZM
M
5
V6/
5.
6V
ZD753
ZM
M
5
V6/
5.
6V
R763
220
R763
220
D3
MBRX180/80V/1A
D3
MBRX180/80V/1A
28V_1
28V_1
C23
0.1uF/50V/X7R
C23
0.1uF/50V/X7R
L5
22uH/3.3A
L5
22uH/3.3A
Q640
AP9579GH-HF
Q640
AP9579GH-HF
S
S
S
D
D
D
D
G
+
47uF/50V
CE1
+
47uF/50V
CE1
Q27
NPN_MMBT8050C
Q27
NPN_MMBT8050C
C3
100pF/
50V/
N
P0
C3
100pF/
50V/
N
P0
C5
470pF/50V/X7R
C5
470pF/50V/X7R
C31
0.
1uF/
25V/
Y5V
C31
0.
1uF/
25V/
Y5V
FB24
500/800mA
FB24
500/800mA
FB31 70/3A
FB31 70/3A
TPS54260
U4
TPS54260
U4
BOOT
1
VIN
2
EN
3
SS/TR
4
RT/CLC
5
PWRGD
6
VSNS
7
COMP
8
GND
9
PH
10
PwPG
11
GND
12
GND
13
GND
14
GND
15
GND
16
C1
2
3300pF/
50V/
X7R
C1
2
3300pF/
50V/
X7R
C30
0.
1uF/
25V/
Y5V
C30
0.
1uF/
25V/
Y5V
L4
22uH/1A
L4
22uH/1A
C11
NC/1000pF/50V/X7R
C11
NC/1000pF/50V/X7R
C
768
0.
1uF/
25V/
X7R
C
768
0.
1uF/
25V/
X7R
+
C
E
802
470U
F/
35V
+
C
E
802
470U
F/
35V
C1
4
0.
1uF/
50V/
X7R
C1
4
0.
1uF/
50V/
X7R
C29
0.
1uF/
25V/
Y5V
C29
0.
1uF/
25V/
Y5V
R26 4.7K
R26 4.7K
D1
BAV99
D1
BAV99
1
3
2
ZD2
BZX79C33
ZD2
BZX79C33
C25
2.2UF
C25
2.2UF
C22
0.1uF/50V/X7R
C22
0.1uF/50V/X7R
Q3
NPN_3DG3904M
Q3
NPN_3DG3904M
C1
0.1uF/50V/X7R
C1
0.1uF/50V/X7R
R30
100K
R30
100K
C37
0.1uF/50V/X7R
C37
0.1uF/50V/X7R
R20
10K
R20
10K
+
470uF/
10V
CE4
+
470uF/
10V
CE4
R3
220K
R3
220K
R779
1K
R779
1K
R31
10K
R31
10K
TP1
TP1
R45
1M
R45
1M
C
273
0.
1uF/
25V/
Y5V
C
273
0.
1uF/
25V/
Y5V
R28
4.7K
R28
4.7K
C28
0.1uF/25V/Y5V
C28
0.1uF/25V/Y5V
C36
0.
1uF/
50V/
X7R
C36
0.
1uF/
50V/
X7R
Q12
N_AP2316
Q12
N_AP2316
G
D
S
R25 4.7K
R25 4.7K
C2
4
0.
1uF/
50V/
X7R
C2
4
0.
1uF/
50V/
X7R
C9
0.1uF/50V/X7R
C9
0.1uF/50V/X7R
L2
22uH-48uH
L2
22uH-48uH
1
2
3
Q4
NPN_3DG3904M
Q4
NPN_3DG3904M
C27
4.7UF/10V/X5R
C27
4.7UF/10V/X5R
C6 470pF/50V/X7R
C6 470pF/50V/X7R
R770
1K
R770
1K
R13
5.6K/1%
R13
5.6K/1%
TP2
TP2
Circuit Diagram - Main board:Power
8-7
8-7
Summary of Contents for FX20
Page 29: ...A A B B C C D D E E 1 1 2 2 3 3 4 4 S S R1 1K R1 1K Circuit Diagram Support board 8 1 8 1 ...
Page 42: ...Print layout USB Key Support Board top side 8 14 8 14 ...
Page 43: ...Print layout In Front Control Board top side 8 15 8 15 ...
Page 44: ...Print layout Power Board top side 8 16 8 16 ...
Page 45: ...Print layout Main Board bottom side 8 17 8 17 ...