ICB2FL02G Datasheet, PDF (32/55 Pages) Infineon Technologies AG – Smart Ballast Control IC for Fluorescent Lamp Ballasts

2^nd Generation FL-Controller for FL-Ballasts
Functional Description
2.7.2 Long Term PFC Bus Under Voltage
If the duration of the bus under voltage exceeds t > 800ms see Figure 27, the controller forces an
under voltage lock out (UVLO). The chip supply voltage drops below V_CC = 10.6 V and the chip supply
current is below I_CC < 130µA. When the Vcc voltage exceeds the 10.6V threshold again, the IC current
consumption is below I_CC < 160µA. In that case, the controller resets the timer and restarts with the full
start up procedure including Monitoring, Power Up, Start Up, Soft Start, Preheating, Ignition, Pre Run
and Run Mode as shown in Figure 27.
V_BUSRated
95%
75%
Bus Voltage Drop for t > 800 ms
Restart with full Start Procedure
Interrupt for t > 800 ms
V_CC
16V
UVLO @ 10.6V
RUN Mode
I_CC
< 6 mA +
I_Gate
Timer
Power Down Mode
< 160 µA
t = 800ms
<160 µA
Run Mode
< 6 mA + I_Gate
I_Preheating
V_Lamp
Figure 27 BUS Voltage Drop below 75% (rated Bus Voltage) for t > 800 ms during RUN Mode
Preliminary Datasheet
Page 32 of 55
ICB2FL02G
V1.2