ICB2FL03G Infineon Technologies, ICB2FL03G Datasheet - Page 28

• Manufacturer Part Number: ICB2FL03G
• Description: LED Drivers
• Manufacturer: Infineon Technologies

Specifications of ICB2FL03G

• Packages: PG-DSO-16
• Lead Free Status / Rohs Status: Details
• Other names: ICB2FL03GXT

2.5.2
The rectifier effect (EOL2) is detected by measuring the positive and negative DC levels of the lamp voltage via a
current fed into the LVS pin
R44 (see
2500 ms, the status of end-of-life (EOL2) is detected. The EOL2 fault results in a latched power-down mode (after
trying a single restart) and the controller is continuously monitoring. The insertion of a new lamp or an interruption
of the input voltage resets the status of the IC.
Figure 20
2.6
In order to prevent a malfunction in the area of capacitive load (see
deviations from the normal load (e.g. harmed lamp, sudden break of the lamp tube …), the IC has three integrated
thresholds – sensed only via the LSCS (pin 2). The controller distinguishes between two different states of
capacitive load: detection of working without load (idling detection, CapLoad 1) and working with short overcurrent
(CapLoad 2). This state (CapLoad 2) affects operation below the resonance in the capacitive load area
(Figure
power-down mode, the controller continuously monitors the input voltage and lamp filaments, and restarts after
interruption of the input voltage or insertion of a new lamp.
Preliminary Data Sheet
23). In both cases, the IC results in a latched power-down mode after a single restart. After latching the
Figure
Detection of End of Life 2 (EOL2) – Rectifier Effect
End of Life (EOL2) Detection, Lamp Voltage versus DC LVS Current
Detection of Capacitive Load
3). If the sensed DC current exceeds ± 42 µA
Pos. DC Level
for EOL2 Detection
Neg. DC Level
for EOL2 Detection
LVSDC Current
Lamp Voltage
- 42 µA
(Figure
42 µA
0
0
20). This current is fed into the LVS pin via the network R41, R42, R43 and
Normal Operation
EOL2 Detection
2
28
Controller for Fluorescent Lamp Ballasts
Rectifier Effect
(Figure 20
t = 2500 ms
Figure
EOL2
4
21) during run mode due to certain
LVSDC current) for longer than
Functional Description
t
t
V1.1, 2012-04-10
ICB2FL03G