vestel 17pw26 tm
DESCRIPTION
PSU Technical Overview v1TRANSCRIPT
17PW26 Power Supply
SANYO Europe Ltd. Technical Training Department UK
Technical Overview
July, 2009-v1
Copyright© SANYO Electric Co., Ltd. All Rights Reserved 20072
Layout Diagram
Power Factor Correction
AC input Standby SMP transformer
Half Bridge transformer (Run supplies)
AC mains filter
PL816 +24V Backlight inverter switched supplies
Standby & Run Supplies
PL804 +5V & +12V switched supplies
Copyright© SANYO Electric Co., Ltd. All Rights Reserved 20073
17PW26 Layout
IC803 Half Bridge (Run supplies)
IC806 Stby SMP IC811 Stby switching optoIC829 5V Stby Reg
IC802 PFC SMT (Print side) Q827 +12V Rectifier
Q828 +24V Rectifier
Copyright© SANYO Electric Co., Ltd. All Rights Reserved 20074
17PW26 Basic operation
The 17PW26 power supply circuitry is very similar to the 17PW20 and operates in the same way.
Please refer to the 17PW26 circuit diagram. (next page).
Standby Mode
The standby circuit is a switch mode supply (IC806) which supplies always 3.3v and 5V supplies
(via 5v Regulator IC829) to supply the CPU, NVM, IR & Keypad.
A VF main 12V output is also fed from D807/C801 to switching transistor Q844.
Q844 is controlled via opto coupler IC811 from the CPU (PL816 Pin 6) to provide standby / run switching.
Run Mode
When Q844 is switched on it supplies VCC2 to IC802 (Power factor correction) and VCC1 IC830(half bridge).
The switched run supply secondary voltages are then established.
Protection
Q837 FET is connected to pin 2 of IC830. If any of the protection circuits operate, pin 2 is pulled low.
IC803 will then cease outputting drive pulses and the run supplies will not be present.
Various protection circuits feed into the gate of Q837, as can be seen from the circuit diagram.
10k
R865
10k
R864
TCET110G
IC809
1
23
4 1kR871
+12V
10kR872
+24V
4k7
R875
33k
R877
47RR873
MTP6N60E/SSP7N60AQ813
MTP6N60E/SSP7N60AQ814
10RR861
10RR860
50V
100n
C833
47k
R836
1kV
1n
C842
27R
R869
50V
100n
C841
6k8R868
8k2
R867
50V
33u
C840
BC848BQ807
BC
848B
Q812BC848B
Q810
BC858BQ811
100kR855
4k7R856
12kR857
47k
R862
4k7
R858
1N4148_SOD123
D811
33k
R859
50V
100n
C839
33kR863
10kR866
10kR852
100kR850
470R
R849
C15V
_S
OD
123
D809
A 1K 2
1N4148_SOD123
D805
50V
10u
C826
3k3
R843
VFB
50V100n
C845
VFB
35V
1000u
C850
16V
1000u
C851
+12V
+24V
50V2n2
C849
30kR876
5k1R870
50V
1n
C846
Freq
Freq
L811
150n
C800
250V
0R
47
R830
IRF7314
IC802
1 S1
3 S2 6D2A
8D1A
2 G1
4 G2
7D1
5D2
16V
1u
C808
50V
10n
C805
15RR823
F800
FUSE_RADIAL
VA
R-5
10V
R801
450V150uC819
27k
R820
2k7
R815
27k
R803
MTP6N60E/SSP7N60A
Q803
330kR819
+400V
+400V
TCET110G
IC811
1
23
4
50V
10u
C814
47k
R822
10kR893
BC848BQ805
4kV2n2
C847
+3.3VSTBY
+400V
+5VSTBY
160V
1u
C853
C33_S
OD
123
D821
A 1K 2 +33V
16V
1000u
C863
VCC_3V3_ON47k
R828
100RR846
3k3
R839
16V
100u
C837
S801BC848B
Q806
+3.3VSTBY
BC848B
Q804ST_BY
50V
100n
C824
+24V
+12V
PL801
1
2
3
4
5
6
7
8
9
10
DIM_PWM_ANALOG
+24V
PL802
1
2
3
4
5
6
7
8
9
10
11
12
A/D_DIM_SEL
+12V
ON/OFF
VF
_M
AIN
1k8
R826
1k8
R831
BC848B
Q802
3k3
R838
10kR834
RS1008_SOD123
D807
50V1nC856
1k
R879
+3.3VSTBY
6V34700uC818
3kR880
50V33uC801
1k8
R881
VF_MAIN
50V100nC830
100RR825
Opto
6V32200uC860
10kR882
3k3R883
22u
L804
4kV2n2
C813
22R
R884
Opto
630V10n
C810
10k
R887
100R
R888
BA159
D823
100R
R889
25V220uC817
100RR890
TCET110GIC801
1
23
4
35V
1000u
C852
0R
47
R829
VCC1
C3V9_SOD123
D826A1
K2
4k7
R891
10kR892
3k3R824
47kR897
BC848BQ818
SW_OFF
SW_OFF
1MR914
RS1008_SOD123
D832
1kR921
10kR918
220k
R917
47k
R919BC848BQ820
BC858BQ822
VCC1
VCC1
47kR910
1MR940
50V
100n
C868
BC848BQ808
SW_OFF2
SW_OFF2
1MR913
PFC_OFF
1u
C870
16V
330kR818
100k
R931
4kV
2n2
C873
1M
R932
2X
12m
TR
802
1 4
2 3
16V
10u
C874
12kR933
N1 N2
PRI SECSMPS-RESONANT_PFCTR806
1
4 8532
7
6
9
10 11 12
+400V
VCC2
33R
R832
100k
R941
630V
12n
C878
1kR874
BC
848B
Q830
560k
R942
47kR944
100k
R945
10k
R946
56kR947
12k
R948
1k8
R949
470RR952
20RR953
16V1uC883
+12V_2
+12V_2
BC848BQ831
BC848BQ833
C6V8_SOD123
D847A1
K2 +5V
+12SV
1N4148_SOD123
D842
100k
R959
1M
R915
330kR817
16V
1u
C886
16V
1u
C887
450V1uC802
210u
L802
4M7
R960
GNDCAP1
NTGS3446
IC824
1 D1
3 G 4S
6D4
2 D2 5D3
10kR833
TNY266
IC806
1 BP
3 S2 6NC
8S4
2 S1
4 EN/UV
7S3
5D
PL809
1
2
+12SV
6k8R962
100k
R964
BC848BQ834
22kR965
10k
R966 D854 +24V
50V10u
C892
47kR970
0R
47
R971
50V
100n
C894
1N4148_SOD123
D857
1kR972
BSH103Q837
15k
R973
1kR974
470RR976
50V
2n2
C898
BC848BQ838
10k
R977
1k5
R978
220kR979
BC858B
Q839
1kV
10n
C902
1kV
10n
C903
1MR982
1MR981
1MR980
BC858B
Q841
16V
1u
C904
BA
T54J
D861
TL431SAMF2D819
TL431SAMF2
D851
TL431SAMF2
D850
25V
4700u
C911
10k
R1002
10k
R1001
10k
R1000
10k
R999
10k
R998
10k
R997
10k
R996
120RR1003
16V
1u
C913
1N
4148_S
OD
123
D865
78L05_TO92IC829
1VOUT
2GND
3
L816
1kV
470p
C914
20R
R1006
20R
R1007
20R
R1008
20R
R1009
20R
R1010
20R
R1011
SMPS_MINIDVB_SINGLE_RANGE
TR803
4C
1A
1026V
916V
8GND
73V3
65V
5AC_GND
3NC
2B
10k
R1012
4k7R1013
1N4148_SOD123
D862
1MR912
AC1
AC2
AC1 AC2
AC1
+3.3VSTBY
+12V_2
+12V
SW1
ST_BY
SW1
SW2
100RR1014
50V47n
C915
SW2
VCC1
VCC2
STPS_3P_10L60CFP
Q816
STPS_3P_10L60CFP
Q815
STPS_3P_10L60CFPQ828
PFC_OFF
50V33pC916
ZCD
ZCD
CS1
CS1
120k
R1015
ZCD
STPS_3P_10L60CFP
Q827
C5V1_SOD123
D866
4kV
2n2
C917
1RR1016
4kV
2n2
C918
GNDCAP
1kV
1n
C919
50V220p
C920
50V220p
C921
C8V
2_S
OD
123
D867
RS1008_SOD123
D869
16V
10u
C922
2k7
R878
250V
47u
C924
47kR920
+12SV
+24V
VC
C1
RS1008_SOD123
D875
16V
1u
C928
Off1
BAV99D876
1kV
1n
C893
BA
V99
D877
50V100nC929
50V100nC930
BAV70
D878
Freq
Off1
Fre
q
Off1
16V
1000u
C809
50V100n
C804
C6V
8_S
OD
123
D801
+12V
5k6
R804
6V
32200u
C811
BC
848C
Q800
3k
R800
IRF7314
IC800
1S1
3S26 D2A
8 D1A
2G1
4G2
7 D1
5 D2
+5V
1N4148_SOD123
D802
15k
R808
330R_100MHZ_3A
L803
+5V
1R5R812
1R5R811
1kR809
16V1uC803
16V1uC807
56R
R810
VAR-510VR814
33RR802
22u
L800
IRF7314
IC803
1 S1
3 S2 6D2A
8D1A
2 G1
4 G2
7D1
5D2
+12V
BL_ON/OFF
+3.3VSTBY
UF5402
D879
BD
138
Q844
RS
1008_S
OD
123
D880
+24V
10R
TH1
SMPS_TFT_EER35_RES
TR810
1
4
8
5
3
2
7
6
9
10
11
12
13
14
15
16
GNDCAP
BYV27-200
D881
35V470uC931
+30V
1N5406
D882
1N5406
D883
2k2
R1017
2k2R1020 +12V
RS1008_SOD123
D884
1N4148_SOD123
D885
22RR1021
22RR1022
33R
R1023
S817
PL804
1
2
3
4
5
6
PL812
1
PL
80
0
1
PL
81
3
1
PL
81
4
1
GNDCAP
GNDCAP1
22u
L817
22u
L818
4kV
2n2
C933
GNDCAP1
VCC1
C12V_SOD123
D886
2k4R1024
10kR1025
390R
R1026
ON
/OF
F
100kR1027
+24V
2k4R1028
680k
R1029
S818
VF_MAIN
450V1uC934
330R_100MHZ_3A
L819
16V10uC935
50R_100MHZ_3A
L82060R_100MHZ_3A
L821
50R_100MHZ_3A
L822
gnd2
50R_100MHZ_3A
L823
60R_100MHZ_3A
L824
gnd2
gnd2 gnd2
16V10uC938
16V10uC939
gnd2gnd2
50R_100MHZ_3A
L825
60R_100MHZ_3A
L826
2X
12m
TR
801
1 4
2 3
L82912
3 4
50R_100MHZ_3A
L830
Off1
50V
1n
C941
+24V
6k8R1030
2k2
R1031
C22V_SOD123
D887
1N
4148_S
OD
123
D888
16V
1u
C899
BC848BQ846
BC848BQ845
330R_100MHZ_3A
L832
1kV
1n
C925
CSSD
CSSD
TNY266
IC830
1 BP
3 S2 6NC
8S4
2 S1
4 EN/UV
7S3
5D
60R_100MHZ_3A
L834
60R_100MHZ_3A
L83550R_100MHZ_3A
L836
50R_100MHZ_3A
L833
100uH
L837
GBU4M
D800
330R_100MHZ_3A
L839
50R_100MHZ_3A
L838
gnd2
gnd2
gnd2
gnd2
1RR1032
50V2n2
C942gnd2
50V470p
C943
gnd2
gnd2
S819
S820
AC
1A
C2
150n
C945
250V150n
C944
250V
S821
S822
AC4
AC3
AC2
AC4
AC3
AC4
AC3AC2
L84012
3 4
L84112
3 4
AC4
AC3AC2
10RR1033
50V1n
C9461N4148_SOD123
D889
RE
LA
Y_C
OIL
L842
1 234
2R2
R1035
VS
W
VS
W
PL
81
5
1 2
S823
S824
PL816
12
34
56
78
910
1112
1314
1516
1718
1920
2122
2324
2526
2728
SW_SWITCH
ST_BY
BL_ON/OFF
DIM_PWM_ANALOG
+5VSTBY +33V
+3.3VSTBY +3.3VSTB
VCC_3V3_ON +5V
+24VA +24VA
+30VA/D_DIM_SEL
SW_SWITCH
+12V_1 +12V_1
+12V_1
+5V
50R_100MHZ_3A
L844
330R_100MHZ_3A
L843
PL817
1
2
3
4
5
6+30V
+24V
BL_ON/OFF
+400V
PL818
1
2
PL819
1
2
PL820
1
2
PL821
1
2
25V
ST
PS
5L
25B
IC831
23
4
1
50V
100n
C947
22u
L845
22u
L846
50R
_100M
HZ
_3A
L801
35V
1000u
C948
1N4148_SOD123
D891
1N4148_SOD123
D892
16V
10u
C949
16V
10u
C950
16V
1u
C951
RS
1008_S
OD
123
D806
16V
1u
C901
25V
1u
C932
25V
1u
C953
25V
1u
C954
1kV
1n
C955
50V100n
C862
50V
22n
C855
16V
1u
C838
16V
1u
C956
16V
1u
C957
16V
1u
C958
16V
10u
C959
16V
10u
C960
RS1008_SOD123
D890
16V
10u
C881
2k2
R1036
+24V S802 +24VA
S803+30V
AC1
AC1AC1
+24V
_B
O
+12V
_B
O
+24V_BO
+12V_BO
1kR1037
2k4R1038
50R_100MHZ_3A
L827
+12V
RE
LA
Y_S
AF
E_O
JE-S
S-1
12H
M
RL
1
123 4
S826
PL822
1
2
35V470uC961
35V
1000u
C962
17PW26 REV:01
RESONANT MODE TFT POWER SUPP
UMB ISTEGI26"EK OPSIYON
17PW26 Socket connections
Run 24V to BL inverters
12V Run
5V Run
PL817
Standby Supplies
PL816 to Chassis Pcb
PL804
PL801
PL802
Standby 2.9V – Run 0V from CPU
Note:- PL802 & PL817 may not be fitted, depending on PSU version
24V Run
30V Run
Copyright© SANYO Electric Co., Ltd. All Rights Reserved 20077
Produced in the UK by Mike Burnett
Senior Technical Liaison & Training Engineer
SANYO Europe Ltd
Watford