ICB1FL03G Infineon Technologies, ICB1FL03G Datasheet - Page 14

• Manufacturer Part Number: ICB1FL03G
• Description: IC SMART BALLAST CONTROL DSO18
• Manufacturer: Infineon Technologies
• Type: PFC/Ballast Controllerr

Specifications of ICB1FL03G

• Frequency: 20 ~ 100 kHz
• Current - Supply: 5mA
• Voltage - Supply: 8.4 V ~ 17 V
• Operating Temperature: -25°C ~ 125°C
• Package / Case: 20-SOIC (0.300", 7.50mm Width) 18 leads
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Lead Free Status / Rohs Status: Details

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 (R41, R42, R43 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
Preliminary Datasheet Version 1.02
Detection of End-of-Life and Rectifier Effect
Circuit diagram of the lamp inverter section.
Sensed lamp voltage levels.
D9
R34
C10
- Shut down level
+ Shut down level
IV
- EOL Threshold
+ EOL Threshold
- Ignition level
+ Ignition level
L+PEAK
PFCZCD
PFCGD
PFCVS
PFCCS
V
V
LAMP-RUN
LAMP-IGN
I/IV
R21R22R23
L-PEAK
0
C13
I
HSVCC
HSGND
HSGD
LSGD
LSCS
R61
C14
R30
R26
R27
D6
R41
R35
14
R24 R25
Q2
Q3
C15
C18
D8
D7
C17
C16
R42 R43
L2
D61
SMD-Z
R36
t
Functional Description
C24
C19
ICB1FL03G
March 2009