Alba CDVB4 - Page 34

5 5
4 4
3 3
2 2
1 1
D D C C B B A A
DRAIN
DC310V
5VA5VD
5VD
3V3 VDD33
1V25VD
+12VA 12VA
Title Size Document Number R ev Date: Sheet
of
Designed by: Checked by: Approved by:
SHENZHEN GIEC ELECTRONICS CO., LTD
SW ITCH MODE POWER SUPPLY 1.0 DVB-MPEG-12
B
16Sunday, January 04, 2009
 R12 10K EE25
  
100
 !" #
33K 72
$ % " #
19 33K
& '() 
*+,
VER1.0
- ./0
10uf/16V C
12 3,
15
$456789 :
W431
;< =>
VER1.0
- ./0
R12
12?@
IC
ABC D MOSFET ,
@
EFGHI89
IC.
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12V 0.1A/10.76V~12.2
@0
3V
5V 2
@MNO P=QRS0
1.51A/5.08V 5.11V
T
≤1
0
0W
≥7
U0
8%
-12V 0.08A/-10.8V~-12.6
@0
7V
+5V (2.5/9.31)*(10+9.31)=5.
VW0
19V
5.18V 5.21V
XY T MZ[\]S
≥7
U0
5%
12V 0.15A/10.83V~11.9
K@0
8V
5V 5
K@MNO P=QRS0
2.0A/4.92V 4.95V
T
≤1
0
3W
-12V 0.10A/-10.66V~-12.1
K@0
7V
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\]0
PCBlayout
_`0 a %
PCBlayout _`0 a
%
VER2.1
125^ 
HI89L>
IC
320mA 200mA
C124
4.7nF/1KV
R44 10R/1W
!
LF1 ZJ UU9.8
FB20 FB0603/70R
C131
47nF
D14
1N4007
C134 100nF
FUSE1
T630mAL250V
R162
2.2K
FB21 FB0603/70R
C130
100nF/275V
ZD8
9.1V/0.5W
+
C77 100uF/16V
C125
1nF/400V
D13 FR107
CN6
VH-3A2
C129
47nF
D15
1N4007
1
2
3
4 57
6 8 9
10
T1
KBEE25-612030
D18 FR107
+
EC43 220uF/16V
!
D16
FR107
C133 1nF/400V
R165 10K 1%
+
C123
22u/400V
C126
1nF/400V
R64 33K/0805
R167
10K 1%
U12 AZ1117-3.3V
IN
3
ADJ
1
OUT
2
C78 100nF
FB19 FB0603/70R
+
EC46
CD288-16V-1000uF
R161 33K/10K
+
EC42
CD288-25V-220uF
U13 AZ1117-1.2V
IN
3
ADJ
1
OUT
2
U9
FSDH321
GND
1
Vcc
2
Vfb
3
Ipk
4
Vstr
5
DRAIN
6
DRAIN
7
DRAIN
8
R157
47K/1W
R166
1K
D19
1N5822
R159 10R 1/4W
C15
100nF/275V,NM
R156
33K/0805
R163 220R
L11
10uH/2A
+
EC45
CD288-16V-1000uF
!
R164 1K
U10 PC817B
1 23
4
+
EC44
CD288-25V-47uF
R160
1K
C132
100nF
!
+
EC49 470uF/16V
C80
100nF/275V
!
D12
1N4007
D17
1N4007
+
EC47 220uF/16V
!
R63
33K/0805
C127
100nF/50V
U11 TL431
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