ICB2FL03G Infineon Technologies, ICB2FL03G Datasheet - Page 12

• 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

overvoltage threshold operates with a hysteresis of 100 mV (4 % of the rated bus voltage). For the detection of
successful start-up, the bus voltage is sensed at 95 % (2.375 V). It is recommended to use a small capacitor
between this pin and GND as a spike suppression filter.
In run mode, a PFC overvoltage stops the PFC gate drive within 5 µs. As soon as the bus voltage is less than
105 % of the rated level, the gate drives are enabled again. If the overvoltage lasts for longer than 625 ms, inverter
overvoltage is detected and the inverter turns off the gate drives also. This causes powerdown and powerup when
V
A bus undervoltage (V
the IC changes into powerdown mode and generates a delay of 100 ms by an internal timer. Then startup
conditions are checked and if valid, a further startup is initiated. If startup conditions are not valid, a further delay
of 100 ms is generated.
This procedure is repeated a maximum of seven times. If startup is successful within these seven cycles, the
situation is interpreted as a short interruption of the mains supply and the preheating is skipped. Any further startup
attempt is initiated to include the preheating.
RFRUN (set R for run frequency, pin 9)
A resistor from this pin to ground sets the operating frequency of the inverter during run mode. The typical run
frequency range is 20 kHz to 120 kHz. The set resistor R_RFRUN can be calculated, based on the run frequency
f
RFPH (set R for preheat frequency, pin 10)
A resistor from this pin to ground, together with the resistor at pin 9, sets the operating frequency of the inverter
during preheating mode. The typical preheating frequency range is from the run frequency (as a minimum) to
150 kHz. The set resistor R_RFPH can be calculated, based on the preheating frequency f
R
RTPH (set R for preheating time, pin 11)
A resistor from this pin to ground sets the preheating time of the inverter during preheating mode. A set resistor
range from zero to 25 kΩ corresponds to a range of preheating times from zero to 2500 ms subdivided into 127
steps, as expressed below:
LVS (lamp voltage sense, pin 12)
Before startup this pin senses a current fed from the rectified line voltage via resistors through the high-side
filaments of the lamp for detection of an inserted lamp.
Preliminary Data Sheet
RUN
BUS
RFRUN
according to the equation:
< 109 %.
according to the equation:
BUS
> 75 %) or inverter overvoltage during run mode is handled as a fault U. In this situation
R
RFPH
R
R
FRUN
RTPH
=
=
f
5
=
PH
⋅
12
5
10
t
100
⋅
⋅
R
Pr
10
R
8
f
RFRUN
eHeating
Controller for Fluorescent Lamp Ballasts
Ω
RUN
RFRUN
8
k
ms
Ω
Hz
Ω
Hz
−
1
Pin Configuration and Functionality
PH
V1.1, 2012-04-10
and the resistor
ICB2FL03G