Lvds & Led Panel Driver - EUROCOM R130T Service Manual

Schematic Diagrams
LVDS & LED Panel Driver
Sheet 5 of 21
LVDS & LED Panel
Driver
B - 6 LVDS & LED Panel Driver
3. 3 V
S Y S 1 5V S Y S 1 5 V
Q1 C 2
R 1 5 4 R 1 55 1 6
D D
0 . 1u _ 1 0V _ X 7 R _ 04
1 M_ 04 1 M _0 4 2 5
D D
3 4
G S
Q2 2
P D T C 1 14 E U S I 34 5 6 B D V -T 1 -E 3
B
2 GM_ E N A V D D
G C 1 R 1 51
Q 2 0. 0 1 u _1 6 V _ X7 R _ 0 4 *1 00 K _ 0 4
MT N 7 0 02 Z H S 3
G
LED PANEL BACKLIGHT DRIVER
V I N
P L 2 4 . 7u H _6 . 7 *6 . 3 *3 . 5
V D D 5
3 LC D _ B R I G H T N E S S
P C 59 P C 5 7
1 0 u_ 2 5 V _1 2 1 0u _ 2 5V _ 1 2
P C 1
1 u _ 10 V _ 0 6
V D D 5
P U 3
19
E N
P R 4 3 1 00 - 4 0 0H z 20
P W M
1 0 0K _0 4 P Q1 3 2 0K -2M H z 6
A P W M
MT N 7 0 0 2Z H S 3
PR7 :pow er ? 2
S K I P
G 13K ?10K _1%
3
C OMP
F sw =2 M H z 4
F S E T
I N V _ B LO N
G P R 4 4
P Q 1 4
M TN 7 00 2 Z H S 3 P C 5 6 1 . 0 5 K _1 % _ 04 5
L E D = 20 m A
I S E T
0 . 1u _ 1 6V _ Y 5 V _ 0 4
P C 5 8 P R 4 5 P R 4 6 7
L E D 1
0 . 1 u _1 6 V _ Y 5 V _ 04 10 K _ 1% _ 0 4 12 K _ 1 %_ 0 4
S GN D S GN D S GN D
Fsw = 2 6.03 /R.F SET ID =
1.2 3/I. SET * 21 0
P R 4 7 *1 5 mi l _s h o rt _0 6 (mA /LED )
S GN D
3 . 3 V 3 . 3 V
U 1 0 D
74 L V C 0 8 P W U 1 0 A
12 74 L V C 0 8 P W
2 S B _ B L ON
1 1 1
13
H8
3 B K L _E N
2
2A
P LV D D
R 10 9 1 K _ 0 4
2 GM _B LO N
R 1 5 2 R 1 5 3
C 11 1 1 0 0 p_ 5 0V _N P O_ 0 4
20 0 _ 1% _ 0 6 2 00 _ 1 %_ 0 6 R 10 7 1 0 0 K _0 4
3 . 3 V
R 1 0 8 *1 0 K _ 04
U 10 B
Q 21 7 4 LV C 0 8P W
M TN 70 0 2 Z H S 3 3 , 12 L I D _ S W # R 24 4 * 1 5m i l _ s h ort 4
5
2 , 3 P M _P W R OK
98 050 6
ch ang e
3 . 3 V S
SEL1
GM _E D I D _ C LK R 1 2 . 2 K _1 % _ 04
0
GM _E D I D _ D A TA R 2 2 . 2 K _1 % _ 04
1
0
1
P D 5
F M 2 60 LE D _ P W R +
0
A C
OVP =3 5V
1
P C 5 5 P C 5 4
P R 3 9
1 u _ 50 V _ 1 2 1u _ 5 0V _ 1 2 0
90 . 9 K _ 1% _ 0 4
1
R.OV P = (V.O VP-3 0)/5 4.9uA
26
A G N D
2A
27 1
P L V D D
E P
3
1 5
P G N D 7
GM _ LV D S _ L0 N
21 9
P G N D 2 GM_ L V D S _ L 0 N
S G N D V D D 5 GM _ LV D S _ L0 P 1 1
2 GM_ L V D S _ L 0 P
1 3
18 S E L 3 = H P R 4 0 1 0K _0 4 GM _ LV D S _ L2 N 1 5
S E L 3 2 GM_ L V D S _ L 2 N GM _ LV D S _ L2 P 1 7
2 GM_ L V D S _ L 2 P
17 S E L 2 = L P R 4 1 *1 0 m i l _ s ho rt _ 0 4 1 9
S E L 2
GM _ LV D S _ LC LK N 2 1
2 G M_ LV D S _ LC L K N
16 P R 4 2 1 0K _0 4 GM _ LV D S _ LC LK P 2 3
S E L 1 = H 2 G M_ LV D S _ LC L K P
S E L 1
30m il 2 5
98 030 2 2 7
L E D _ P W R +
15 L E D 2 - sh ort 2 9
LE D 2
A 8 5 0 0
L E D 4 -
L E D 6 -
L E D 5 -
L E D 3 -
L E D 1 -
3 . 3V
C 9 9
*0 . 1 u _1 6 V _ Y 5 V _ 04
3
U 10 C
7 4 LV C 0 8P W
9
8 I N V _ B LO N
1 0
R 92
1 M_ 0 4
6
S EL2 SE L3 LEDx Out put
Onl y LE D1 o n
0 0
LED 1 th rogh LED 2 on
0 0
1 0 LED 1 th rogh LED 3 on
1 0 LED 1 th rogh LED 4 on
0 0 LED 1 th rogh LED 5 on
LED 1 th rogh LED 6 on
0 1
1 1 LED 1 th rogh LED 7 on
1 1 LED 1 th rogh LED 8 on
J_ L E D P A N E L 1
2 3 . 3 V S
1 2
4
3 4
GM _E D I D _ C L K
6
G M_ E D I D _C L K 2
5 6 8 GM _E D I D _ D A T A
7 8 G M_ E D I D _D A T A 2
1 0
9 10
1 2
1 1 12
1 4 GM _L V D S _L 1 N
G M_ L V D S _ L 1N 2
1 3 14
1 6 GM _L V D S _L 1 P
1 5 16 1 8 G M_ L V D S _ L 1P 2
1 7 18
LE D 1 -
2 0
1 9 20
2 2 LE D 2 -
2 1 22
2 4 LE D 3 -
2 3 24
2 6 LE D 4 -
2 5 26 LE D 5 -
2 8
2 7 28
3 0 LE D 6 -
2 9 30
87 2 1 6-3 0 06