HT-CT180
HT-CT180
21
21
4-4. SCHEMATIC DIAGRAM - MAIN Board (2/6) -
• See page 28 for IC Block Diagrams.
A
3
8
6
E
2
D
5
B
C
7
1
4
(2/6)
MAIN BOARD
Rate : 2A 30V 160m
340KHz
In Range: 4-30V
Out Range: 0.923V-12V
1.25V
Close to U2_EUP3482A
Vout=0.923(R1+R2/R2)
FB=0.923V
Vout=0.923(R1+R2/R2)
FB=0.923V
Close to U2_EUP3482A
STB_3V3
POWER_18V
POWER_18V
1V2
AMP_VCC
STB_3V3
STB_3V3
SYS_3V3
SYS_5V
STB_3V3
1
2
3
5
6
4
8
7
1
2
3
5
6
4
8
7
3
2
1
4
Q1
NPN_3DG3904M
Q1
NPN_3DG3904M
R8
10K
R8
10K
CE7
220uF35V
CE7
220uF35V
R99
100pF
R99
100pF
C11
3300pF//50V/X7R
C11
3300pF//50V/X7R
C
23
1uF
C
23
1uF
Q3
PNP_3CG9012M
Q3
PNP_3CG9012M
C2
5
0.
1uF/
25V/
Y
5V
C2
5
0.
1uF/
25V/
Y
5V
C17
330pF/
50V/
N
P
0
C17
330pF/
50V/
N
P
0
C4
330pF/
50V/
N
P
0
C4
330pF/
50V/
N
P
0
100U
F/
25V
CE27
100U
F/
25V
CE27
U2
EUP3482ADIR1
U2
EUP3482ADIR1
C
199
4.
7uF/
16V/
Y
5V
C
199
4.
7uF/
16V/
Y
5V
U3
EUP3482ADIR1
U3
EUP3482ADIR1
C
75
10uF/
1
0V/
X
7
R
C
75
10uF/
1
0V/
X
7R
U4
AS1117
U4
AS1117
C755
0.1uF/25V/Y5V
C755
0.1uF/25V/Y5V
C6
0.01uF
C6
0.01uF
C7
0.
1uF
C7
0.
1uF
R122
0
R122
0
R21
560
R21
560
C18
0.
1uF/
25V/
Y
5V
C18
0.
1uF/
25V/
Y
5V
C
200
1uF/
50V/
X
7R
C
200
1uF/
50V/
X
7
R
C
24
0.
1uF/
25V/
Y
5V
C
24
0.
1uF/
25V/
Y
5V
D
542
NC
D
542
NC
C
79
10uF/
10V/
X
7R
C
79
10uF/
10V/
X
7R
C19
3300pF//50V/X7R
C19
3300pF//50V/X7R
R57
39.2K/1%
R57
39.2K/1%
C16 0.01uF
C16 0.01uF
C
234
0.
1uF
C
234
0.
1uF
R6
22K
R6
22K
L1
10uH/2A
L1
10uH/2A
C
80
N
C
/10uF/
10V/
X
7R
C
80
N
C
/10uF/
10V/
X
7R
C12
0.1uF/25V/Y5V
C12
0.1uF/25V/Y5V
R1
8
NC/1
20
/1
%
R
18
N
C
/120/
1%
C20
0.
1uF
C20
0.
1uF
C10
0.
1uF/
25V/
Y5V
C10
0.
1uF/
25V/
Y5V
D
543
NC
D
543
NC
C
237
0.
1uF
C
237
0.
1uF
C162
150 ohm
C162
150 ohm
C3
NC/0
.1
uF
C3
NC/0
.1
uF
R774
22K
R774
22K
L2
10uH/1A
L2
10uH/1A
C2
36
0.
1uF
C
236
0.
1uF
100U
F/
25V
CE25
100U
F
/25V
CE25
C116
10UF/
25V/
X
7R
C116
10UF/
25V/
X
7R
FB19
600/2A
FB19
600/2A
R123
100pF
R123
100pF
C15
10U
F
/2
5V/
X
7R
C15
10U
F
/2
5V/
X
7R
R5
47K
R5
47K
C
255
0.
1uF
C
255
0.
1uF
R115
51K/1%
R115
51K/1%
R25
56
R25
56
R16
0
R16
0
R1
56
R1
56
R96
7.5K/1%
R96
7.5K/1%
R81
100
R81
100
R9
10
K
R9
10
K
R95
7.5K
R95
7.5K
R3
10K
R3
10K
R1
9
0
R1
9
0
TP43
TP43
R120
1K/1%
R120
1K/1%
R10
7.5K
R10
7.5K
C152
150 ohm
C152
150 ohm
C
82
10uF/
10V/
X
7R
C
82
10uF/
10V/
X
7R
R121
10K/1%
R121
10K/1%
R97
7.5K/1%
R97
7.5K/1%
BS
IN
SW
FB
COMP
GND
SS
EN
BS
IN
SW
FB
COMP
GND
SS
EN
input
Vout
ADJ/GND
Out
EN2
EN2
POWER_ON
POWER_ON
EN2
++
++
++