康佳液晶电视机电源板电路原理图

1
RW901 5.1K ZW901 16V 1
CW911 CW913 104
实测14.5V
+12V
1
1
RW957 100K/F
RW956 4.75K/F
2
1
B
12V过流保护 （实物未装）
R908 1K 5 S12V 2 C957 104
+5V RW961 P/S on/off R904 1K R910 +5V 8 1K +12V VCC 1 2.5V 2 TL431 2 C956 104 OUT1 1 R914 1.5M/1206 Q901 D951 L4148 2 P R915 1.5M/1206 1 R913 R916 1.5M/1206 10K 1 2 R902 22K Q950 1 2N3906 C954 104 R906 2K R917 1.5M/1206 1 TL431 R919 105 R907 470K 2 47K CW905 Q952 2N3904 C958 105 R903 10K 2 5160 3 2.7R 1 CW912 22uF/50V 2 3 R912 1.5K R951 8.2M/2W C952 400Vac-222 C951 100NF/25V R954 47K 47K L4148 1 R918 4 VCC-Inv N952 PC817B Q953 R953 2 D952 1 P/S on/off 3 2N3904 2 1 R956 4.7k 1 PFC 400V Q951 PBSS5160 PVcc R955 4.7K R952 1K +IN2 VCC U954 -IN1 N951 LM358 2 3 1K/NC 2N3904/NC QW954
1
3
4
QW901 2N3904 1
1
VCC
2
DW904 NW950 PC817 2
1
1
QW902 2N7002
FR104
12V稳压
1K RW958 1.8K RW951 10K
+12V
RW914 0
1
RW954 CW956 473 18.7K/F
3
QW903 2N3904/NC
RW905 2.7/1206
1
2
F701 250V-T2AH C713 224/630V/NC Q701 T701
XS751
T701
10 2
C714 224/630V
1 2 3
CON2_0
IFB
R702 1K 0.8V
U701
1 3
0V IFB
3
GH FS
24 23 22
R708 47 C711 104
2 1
FQPF8N50
7 3 8
VCC DRV CS INV
8 7 4 1
RF919 68R/1206
RF903 10K
RF914 680K/1206 RF916 0.12R/3W RF908 510K/1206 RF909
B
2
2
C911 C912 RS1005 1uF/450V 1uF/450V
C913 222pF/2kV
1
1
N
2
CW957 102 3 ZW951 C5.1V/NC RW960 10K/NC 2N3904/NC QW953 2 22uF/50V 2 1 NW951 TL431
2
2
2
2
RW907 100uF/50V
2
2
CW901 22u/10V CW910 105
1
39K CW903
CW908 105
DW902 L4148/NC
C
PQ3220/450uH RF904 CF902 680K/1206 CF901 472/2KV 150uF/450V
DF904
RF910 390K
RF911 20K UF901
2 3 1
BAV70
RF907 22R/1206
2 1
3
3 5
RF918 10K CF908 RF917 68K
COMP ZCD MOT GND
R721 NC NC
C706 33p C707 33p R701 33k 0V 0V
2
BAV99
R771
7
1.6V 8
CF IREF CPWM SGND COMM nonFAULT EN
C710 105
Q703 2N3904 C716 22uF/50V
9 10
1
R710 1K ZD701 C712 NW952 104 TL431 VCC-Inv 12~16V
R905 470K/1206 RF903 1.5M/0805
L901
1
RF915 220K/0805
RF918 510K/0805,F
RF902 1.5M/0805 RF907 470K/0805,F RF906 470K/0805,F
D
4
2
1
3
150UH
2
BD901
R901 470K/1206 470K/1206 R902 C903
R906 470K/1206 470K/1206 R904
RBU1005M + 3 CF908 1uF/450V RF901
L N
1 2
RV901 RN471
1
3
C901 0.47/275V R903
PWM R713
2.2V 11
0V PWMA 14
104
2
1
30K R714 0 C708 104
D701 L4148
C13V
1 2
+12V
12
4.7V
13 PWMD 0.3V
R705 +12V 10K N702 PC817
4
1
R711 10K
2
R755 2K
B/L on/off VDD R756 10K N703 PC817
3
2
康佳KIP+L150I12C1-01(编号34006601 版本号35014097) 逆变部分电路
C717 2.2nF PFC 400V D703 L4148/NC 2 1
注意：如果C751和C753容量为10pF 那么C752和C754容量为2.2nF
C751 33pF/6KV D751 C761 VCS 471 C752 5nF 5nF C754 R753 100K 33pF/6KV BAV99 R720 1K C763 51P R770 R709 100 330K D754 200 R772 30K C764 102 R773 100K R751 1K R752 NC C755 R754 NC D752 222 VF BAV99 222 VF C758
C909
1
L903 2.3mH +
2
DB901 L904 LF904

2
1
1
1
C904 100p/400Vac
1
820k/1W
1
1
R901
2
2
2
2
4
1
2
1
3
3
DF901 Vac RGP30J-3A-600V LF901
DF902 RGP30J-3A-600V
C906 330p/400Vac
C907 100p/400Vac
C902 0.22UF/275V
4 -
2
0.6mH/PQ3225 JLC3322 QF902 STP14NK50ZFP 101/1kV QF901 STP14NK50ZFP
D
1
4
470PF/400Vac
5D214
470PF/400Vac ET24 13mH
2
C906
RT901
3
470K/1206
C904
1
2
2
0.22u/275V
FAN7530
2 6
RF915 100R
CF909 473
CF905 470
474
510K CF906 101 CF903 102 RF901 100K RF905 18K
PDF 文件以 "PDF 制作工厂" 试用版创建
5
htp:/w.finercomÿÿÿÿÿ
4
3
2
-
L
1
LCL-F112
L903 470PF/400Vac
DF902
7
L902
H
1 12 11 5 8
RGP30J LF901 1 LF902 BEND CORE
2
HV LF903 BEND CORE DF901 1 CF911 F08S60S 2 20R/1206 RF919 + CF901 150uF/450V RF920 20R/1206 CF912 10nF/2KV
B
62K R905
6
-IN2
1
1
7 D953 L4148
GND
4
2
R909 62K R911
A
2
C959 103 103
C955
2
100K
3
+IN1
OUT2
开关机控制
1
A
U953
12V 过流保护
5
1
2
4
3
2
PDF 文件以 "PDF 制作工厂" 试用版创建
htp:/w.finercomÿÿÿÿÿ
5
4
B/L ON/OFF B/L on/off
VST
RW902 1.5M
6
Drain
1
CW907 221
RW904 1.5M
GND SYNC 3
VCC
2
5
RW910 6.2K
RW912 12K
6
2
RW906 18K
2
RW903 1.5M
RW908 390K 3
CW902 22uF/50V
1
CW906 33
82K R718 10K TL431 N705
3
PC817
1
R719
2
1
R758 330K
3
1 2
R757 C756
C757
C2.4
背光脉宽调光
75K 222
PDF 文件以 "PDF 制作工厂" 试用版创建
5
htp:/w.finercomÿÿÿÿÿ
4
3
2
5
4
3
2
1
TKP-PVHI-03-N1
F901 4 3 2 1 470PF/400Vac 4A/250V C905 XS901
背光频率为90KHz
C701 103 C702 NC R703 R703NC
VFB
2.2V CIFB
2
2.2V 4 2.2V 5 0.7V 6
C762 VCS
C703 104 C704 103 C705 224
SH NC NC
5 3
Q702 FQPF8N50 IFB R723 R724 82 82 N=5 LK=25mH L701 R716 R715 4 82/NC 82
5
4
3
2
1
康佳KIP+L150I12C1-01(编号34006601 版本号35014097) 电源PFC部分电路
F901 T4AL/250V
4
3
4
2
2
AC XS901
D
1 1
C903
L901 H21401(100uH)
L902
2.3mH
1
2
1
C905 330p/400Vac 1 RV901 2 VDR14561 C902 0.22u/275V
100p/400Vac
2
2
2
100p/400Vac C910
4
3
150UH
Vac
D
B
1
5
4
3
2
康佳KIP+L150I12C1-01(编号34006601 版本号35014097) 12V和控制部分电路
Vac PFC 400V XS951 12V 1 RW911 100K/2W RW952 CW954 LW951 3uH 1 2 RW953 CW951 470u/25V CW955 2 3 9 8 7 DW952 MBR20100 RW955 S12V DW903 BAV70 RW909 2.7/1206 RW959 P 2 1 2 5mR CW953 1000u/25V 1000u/25V NC GND CON4 PIN NA CW952 104 B/L On/off +12V P/S On/off CON5 PIN XS952 B/L Brigh 1 2 3 4 Adj_PWM B/L dim 5 P/S on/off GND 1 2 +12V
3
2
4
VCS R761 10K N704 C715 471 R774 1K
N701 PC817 R717 82K
1
+12V
背光开关，打开背光时高电位
3
高压过压 保护
VF
4
3
2
3
4
灯管过流 保护
2
Q704 2N3904 R759 300K 222 ZD751
D753 BAV99 R760 1M R712 1K B/L dim
471 C753 R722
CON2_0
CVFB CSWP
21 20 2 19 18 17 16 13V
VDD 13V 11V 15 C709 ENA R706 51K R707 47 D702 L4148/NC 1
NXP2071
2 1
6 10
1:1 3mH NC
3 2 1 XS752
CT
NC GL PGND VDD
CF907 101/1KV
RF906 5.1R/1206
RF913 RT901 5.1R/1206 3.0D-21 PFC
1 5
C
12 10
LF902 LF903 DF903 FMY-1106S/16003190 RF902 100K/1206 RF912 PVcc CF910 105 10R/1206 CF904 104/250V QF901 FQPF15N50 NTC
CW915 18/1206 1000p/500V 1 2 RW913 2 DW901 1n4007 100K/1206 CW904 473 1 NW901 FSQ0765 4 FB 1 LW902 FB 2 2 4 1 1 12 11 10 1 TW901 EER28L 3 DW951 MBR20100 2700pF/1.6KV 2