ICB1FL02GXT Infineon Technologies, ICB1FL02GXT Datasheet - Page 14

• Manufacturer Part Number: ICB1FL02GXT
• Manufacturer: Infineon Technologies

Specifications of ICB1FL02GXT

• Operating Temperature (max): 125C
• Operating Temperature (min): -25C
• Pin Count: 18
• Mounting: Surface Mount
• Screening Level: Commercial
• Lead Free Status / Rohs Status: Compliant

3.4
After ignition the lamp voltage breaks down to its run voltage level (typically 50Vpeak to 300Vpeak). Reaching the
run frequency there follows a time period of 250ms called Pre-Run Mode, in which some of the monitoring features
(EOL1, EOL2, Cap.Load1) are still disabled. In the subsequent Run Mode the End-of-life (EOL) monitoring is
enabled. The event EOL1 is detected by measuring the positive and negative peak level of the lamp voltage by a
current fed into the LVS pin (R17, R18,R19 in Fig. 11). If the sensed current exceeds 215µA for longer than 610µs
the status end-of-life (EOL1) or the exceeding of the maximum output power is detected. In Fig. 12 the different
levels of the sensed lamp voltage are illustrated.
Figure 11
Figure 12
Datasheet Version 2.1
Detection of End-of-Life and Rectifier Effect
Circuit diagram of the lamp inverter section.
Sensed lamp voltage levels.
D9
Vcc
C2
- Shut down level
+ Shut down level
VBUS
IV
- EOL Threshold
+ EOL Threshold
- Ignition level
+ Ignition level
L+PEAK
V
PFCZCD
PFCGD
PFCVS
PFCCS
V
LAMP-RUN
LAMP-IGN
I/IV
R5 R12 R13
L-PEAK
0
I
HSGD
HSVCC
HSGND
LSGD
LSCS
R17
R10
R11
R30
C7
14
R18
C4
D6
R14
R15
R19
Q3
Q2
D7
D8
R16
C6
C5
L2
C8
C9
R20
Functional Description
t
C10
D10
September 2008
ICB1FL02G