AME9003 Datasheet, PDF (17/39 Pages) Asahi Kasei Microsystems – CCFL Backlight Controller

AME, Inc.
AME9003
Preliminary
START
Figure 10. Ignition Flow Chart
Start 1 second
timer
F=Fmax
Set SSV = 0V
Yes
CCFL Backlight Controller
No
V(OVPH)>
3.3V
V(OVPL) > 2.5V
Yes
No
V(CSDET) <
Yes
1.25V
No
Timer
End?
Yes
Shutdown
Yes
Timer
End?
No
Yes
Yes
V(OVPL) > 2.5V
No
V(CSDET) < 1.25V
(after normal blanking
and for 8 clk cycles)
No
No
No
F > Fmin?
Yes
F(new)=F(old) - delta
F > Fmin?
No
Yes
F(new)=F(old) - delta
Start Up Side ------- | ------ Steady State
Operation Side
17