ICB2FL02G Datasheet, PDF (38/55 Pages) Infineon Technologies AG – Smart Ballast Control IC for Fluorescent Lamp Ballasts

2^nd Generation FL-Controller for FL-Ballasts
State Diagram
3.2 Operating Flow of the Start UP Procedure into the Run Mode
Vcc < 10.6V
UVLO
Vcc < 10.6V
Icc < 130µA
Vcc > 10.6V
Monitoring
Vcc > 10.6V
Icc < 160µA
V_BUS < 12,5%
or V_BUS > 105%
Vcc > Vccon(14.1V)
& Filament detected
Power-up
Gate Drives off
14.1V < Vcc
Icc approx 6.0mA
after 130µs
& VBUS > 12,5%
& VBUS< 105%
Start-up
Inverter Gates on
PFC Gate on
17.5V> Vcc >10.6V
f_Inv = f_START
V_BUS > 95%
within 80ms
Softstart
17.5V> Vcc >10.6V
f_START=> f_PH
See
Timing and Handling of
Fault Conditions
See
Protection
Functions
Fault
17.5V> Vcc >10.6V
Icc < 170µA
Gate Drives off
after 10ms
after 10ms
& Flag Skip Preheat = Set
& Flag Skip Preheat
// Reset Flag
= Reset
Skip Preheat
Preheat
& Counter Skip PH // _{17.5V> Vcc >10.6V}
f = f_PH
after t_PH= 0...2500ms
Time set by R_TPH
* NOTE:
Ignition will reset the
Flag Skip Preheating
Ignition*
Timeout 237ms
17.5V> Vcc >10.6V
f_PH => f_RUN
f_Inv= f_RUN within
t_IGN= 40...237ms
Pre-Run
17,5V> Vcc >10.6V
f = f_RUN
Reduced Monitoring
after
t_PRERUN=
625ms
Run
17.5V> Vcc >10.6V
f = f_RUN
Complete Monitoring
Figure 36 Operating Flow during Start-up Procedure
Preliminary Datasheet
Page 38 of 55
ICB2FL02G
V1.2