-
66
-
P-MOSFET Q852 is used for switching of step-down converter. And FD852/FD853 are the
flywheel diodes.
R874/R875 determine the feedback to IC851 to set up the output to +5V or +3.3V.
L853
Z45/100MHZ
R862
2.7K J
R875
1K F
Q855
PMBS3904
B
E
C
Q856
2N3906S
C
E
B
5V
C869
1200P K
P10
IC851
TL1451ACN
CT
1
RT
2
1I
N
+
3
1I
N
-
4
1F
BK
5
1D
T
C
6
1O
U
T
7
GN
D
8
VC
C
9
2O
U
T
10
2D
T
C
11
2F
BK
12
2I
N
-
13
2I
N
+
14
SC
P
15
RF
F
16
Q852
2SJ598
D
G
S
R872
22K
R882
22
C868
470P K
L852
47U
R871
3.3K
FD853
ERB83-004
A
K
FD852
ERB83-004
A
K
R874
3.09K F
+
C867
220U 25V
1
2
+
C871
220U 25V
1
2
V-INVERTER
F851
32V 2A
#8 Inverter Circuit Operation Theory
LCDM Inverter Controller --- OZ9933
OZ9933 is a high performance, cost-effective CCFL controller designed for driving large-size
LCD applications requiring 2 to 6 CCFLs.
The controller converts unregulated DC voltages into a nearly sinusoidal lamp voltage and
current waveforms.
The OZ9933 supports full-bridge power conversion topologies while maintaining high-
efficiency operation, current and voltage regulation, over-voltage and over-current protection,
high drive capability.
The control logic provides s regulated ignition voltage and appropriate protection features for
over-voltage or over-current conditions.
Pin Assignment of OZ9933
Содержание G2420HD
Страница 10: ...10 3 1 2 6 Support Timings...
Страница 51: ...51 5 4 Packing...
Страница 56: ...56 5 6 4 2 AC DC converter...
Страница 58: ...58 5 7 Circuit Operation Theory A 1 Interface board diagram A 2 Circuit operation theory a Monitor Diagram...
Страница 72: ...72 Appendix 2 Physical Dimension Front View and Side view Fig 1 Physical Dimension Front View and Side view...
Страница 73: ...73 Fig 2 Appearance Description...