ICB2FL03G Infineon Technologies, ICB2FL03G Datasheet - Page 15

• 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

Figure 4
Followed at the end of the start-up hysteresis (phase 2,
second level of detection activity senses for 130 µs (propagation delay of the IC) whether the bus voltage is
between 12.5 % and 105 %. If the previous bus voltage conditions are fulfilled and the filaments are detected, the
IC starts the operation with an internally fixed startup frequency of typically 135 kHz (all gates are active). If the
bus voltage reaches a level of 95 % of the rated bus voltage within 80 ms at the latest (phase 3,
enters the soft start phase. During soft start (phase 4 ,
to the set preheating frequency
voltage reaches its working level from 10.6 V < V
preheating mode (phase 5,
of the FL filaments. On finishing preheating, the controller starts ignition (phase 6,
phase, the frequency decreases from the set preheating frequency down to the set operation frequency
(adjustable, see
This mode is provided in order to prevent a malfunction of the IC due to an unstable system – e.g., the lamp
parameters are not in a steady state condition. After finishing the 625 ms pre-run phase, the IC switches over to
the run mode (phase 8,
Preliminary Data Sheet
Voltage V
Lamp Voltage
Chip Supply
Voltage V
Rated BUS
Frequency /
Typical Startup Procedure in Run Mode (in Normal Operation)
V
V
V
CC
CC
CC
V
135 kHz
100 kHz
= 17.5 V
= 14.0 V
= 10.6 V
CC
100 %
95 %
50 kHz
42 kHz
30 %
Section
0 kHz
= 0 V
BUS
CC
UVLO
60ms
Figure
1
2.2.2). If ignition is successful, the IC enters the pre-run mode (phase 7,
Figure
Monitoring
(Section
4) with complete monitoring.
35ms
2
4) for preheating the filaments (adjustable time) in order to extend the life cycle
Start Up
80ms
3
2.2.2). In the soft start phase, the lamp voltage rises and the chip supply
11ms
Soft Start
4
Chip Supply Voltage
Rated BUS Voltage
Lamp Voltage
CC
0 - 2500 ms
Preheating
Frequency
< 17.5 V. After the soft start has finished, the IC enters the
Figure
15
5
Figure
Controller for Fluorescent Lamp Ballasts
4), the start-up frequency shifts from 135 kHz down
40 - 237ms
Ignition
4) V
6
CC
> 14.0 V and before phase 3 is active, a
Pre-Run
625 ms
7
Figure
Run Mode
into normal Operation
8
Functional Description
Mode /
Mode /
Mode /
4). During the ignition
Time
Time
Time
V1.1, 2012-04-10
Figure
ICB2FL03G
Figure
4), the IC
4).