AME, Inc.
AME9002
Figure 8-1. Region I
I
LEAK
y
inar
lim
Pre
CCFL Backlight Controller
Figure 8-2. Region II
I
LEAK
C
parasitic
I
Load
C
parasitic
I
Load
Figure 8-3. Region III
I
LEAK
I
C
parasitic
Load
Figure 8-4. Region IV
I
LEAK
I
C
parasitic
Load
Figure 9. Steady State Dimming Waveforms (after initial start up period)
3V
BRIGHT
0.5V
5V
SSV
OV
5V
SSC
3V
3V
OV
"Blanked"
Faults
CSDET < 1.25V
OVPL > 2.5V
CT1
Ignore
Respond
Ignore
Respond
"Unblanked"
Faults
OVPH > 3.3V
Always Respond to Over voltage Faults
Tube Current
(time not
to scale)
~
6ms
14