ICB2FL03G Infineon Technologies, ICB2FL03G Datasheet - Page 30

• 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

2.6.2
A capacitive load 2 operation is detected if the voltage at the LSCS pin drops below a second threshold of
V
during ON switching of the high side MOSFET. If this overcurrent is present for longer than 620 µs, the IC triggers
a latched power-down mode after trying a single restart. The controller keeps monitoring the status continuously
until an adequate load is present e.g. a new lamp is inserted; then the IC changes to normal operation.
Figure 23
2.6.3
The dead time between the turn OFF and turn ON of the half-bridge drivers is adjustable (C16, see
is detected via a second threshold (–50 mV) of the LSCS voltage. The range of the dead time adjustment is 1.05 µs
up to 2.1 µs during all operating modes. The start of the dead time measurement is the OFF switching of the high
side MOSFET. The end of the dead time measurement is when V
(internal fixed propagation delay) below –50 mV. This time will be stored (stored dead time) and the low side gate
driver switches ON. The high side gate driver turns ON again after OFF switching of the low side switch and the
stored dead time.
Figure 24
Preliminary Data Sheet
LSCS
= –50 mV directly before the high side MOSFET is turned on or exceeds a third threshold of V
V
- 50 mV
V
+ 2.0 V
V
V
GateHS
I
GateLS
DSLS
DSLS
LSCS
Capacitive Load 2 (Overcurrent / Operation below Resonance)
Capacitive Mode 2 – Operation with Overcurrent
Adjustable Self-adapting Dead Time
Dead Time of ON and OFF of the Half-Bridge Drivers
t
V
Gate LS
Gate HS
CAPLOAD 2
LSCS
Normal Operation
= -50mV
START of Dead Time
V
V
DSLS
LSCS
Measurement
Stored Dead Time
Normal Operation in RUN Mode
30
Propagation Delay
Dead Time
V
- 50 mV
V
+ 2.0 V
V
GateHS
V
I
GateLS
DSLS
200 ns
Controller for Fluorescent Lamp Ballasts
DSLS
LSCS
END of Dead Time
Measurement
Stored Dead Time
LSCS
Capacitive Load 2 (Over Current )
t
drops for longer than typically 200 ns
CAPLOAD 2
Dead Time
Functional Description
V1.1, 2012-04-10
ICB2FL03G
Figure
LSCS
= 2.0 V
3) and