ICB2FL03G Datasheet, PDF (32/60 Pages) Infineon Technologies AG – 2nd Generation FL Controller for Fluorescent Lamp Ballasts

ICB2FL03G
Controller for Fluorescent Lamp Ballasts
Functional Description
2.7.2 Long-term PFC Bus Undervoltage
If the duration of the bus undervoltage exceeds t > 800 ms (see Figure 26), the controller forces an undervoltage
lockout (UVLO). The chip supply voltage drops below V_CC = 10.6 V and the chip supply current is below I_CC
< 130 μA. When the Vcc voltage exceeds the 10.6 V threshold again, the IC current consumption is below I_CC
< 160 μA. 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 modes, as shown in Figure 26.
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 26 BUS Voltage Drop below 75% (rated Bus Voltage) for t > 800 ms during RUN Mode
2.8
Built-in Customer Test Mode Operation
In order to decrease the final ballast testing time for customers, the 2nd generation of ballast IC supports an
integrated built-in Customer Test Mode and several functions to disable some features and states of the IC.
2.8.1 Preheating Test Mode
This feature forces the IC to stay in the preheating mode (see Section 2.8.1.2) or to start ignition immediately
without any preheating (see Section 2.8.1.1). A resistor at this pin defines the duration of the preheating phase.
Normally, the preheating phase is in a range of 0 ms up to 2500 ms set via a resistor R_RTPH = 0 Ω up to 25 kΩ from
the RTPH pin to GND. The preheating phase is skipped when the RTHP pin is set to GND. If the signal at this pin
is V_RTPH > 5.0 V, the IC remains in the preheating mode.
Final Data Sheet
32
V1.1, 2013-08-14