ICB2FL03G Datasheet, PDF (39/60 Pages) Infineon Technologies AG – 2nd Generation FL Controller for Fluorescent Lamp Ballasts

ICB2FL03G
Controller for Fluorescent Lamp Ballasts
State Diagram
3.3
Auto Restart and Latched Fault Condition Mode
Fault A
Auto Restart
Surge;
Time OUT Start Up
(VBUS < 95% for t >
80 ms)
Fault F
Fault, single Restart
Open Filament LS;
Inverter Overcurrent;
Capacitive Load 1;
Capacitive Load 2;
Timeout Ignition;
EOL 1 (Overload);
EOL 2 (Rectifier Effect);
Fault U
BUS Voltage
BUS Undervoltage
(VBUS < 75%
during Run Mode
for t > 84µs);
BUS Overvoltage
(VBUS > 109%
for t > 625ms);
Increment
Fault Counter
INVERTER and PFC Gate OFF
Only at Inverter Over current PFC Gate
OFF appr. 150µs Delayed
Power down Icc < 160µA
Wait 200ms
Delay Timer A
NOTE
to Set Flag Skip Preheat:
When using external Vcc
Supply, no reset of Set Flag
Skip Preheat. 1st Restart
without Preheating while
Vcc > UVLO. When LVS
deactivated or not from Line.
Set Flag
Skip Preheat
Gate drives off
Power down
Icc < 160µA
Wait 100ms
Delay Timer A
Start
Start-up
Inverter Gates on
PFC Gate on
17.5V> Vcc >10.6V
f_Inv = f_START
N
t > 80ms? _N
from Power-Up
Y
V_BUS > 95%?
Y
Fault A
Timeout 80ms
Start-up
End
Start-up
Fault Counter
<2
Y
N
Reset
Fault Counter
Wait for
Lamp Removal
Lamp removed
for min 100ms
Wait for
Lamp inserted
Lamp inserted
for min 100ms
Lamp
inserted?
N
Y
Increment
Counter Skip PH
Counter
Skip Preheat
Y
>7?
N
Gate drives off
IC remains
in active mode
NOTE
For external Vcc
Supply, set Vcc
below UVLO.
Wait for
UVLO
Lamp inserted &
I_LVSSink > 12µA typ.
N
Y
Vcc > 14.0V?
N
Y
Power-up
Gate Drives off
Reset
Flag Skip Preheat
& Counter Skip PH
Note:
Fault Counter reset
after 40s in Run Mode
Reset of Flag Skip
Preheat after Ignition
Vcc < 10.6V?
N
Y
UVLO
Reset all Latches
Figure 36 Operating Process during Start-Up Mode and Handling of Fault Conditions
Final Data Sheet
39
V1.1, 2013-08-14