ICB2FL03G Infineon Technologies, ICB2FL03G Datasheet - Page 24

• 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

2.4.2.1
The bus voltage loop control is completely integrated
converter with a typical sampling rate of 280 µs and resolution of 4 mV/bit. After leaving phase 2 (monitoring), the
IC starts power-up (V
above 105 % (bus overvoltage) for 130 µs. In the case of bus overvoltage (V
(V
In this case, the PFC restarts automatically when the bus voltage is within the corridor (12.5 % < V
again. Is the bus voltage valid after 130 µs, the bus voltage sensing is set to 12.5 % < V
thresholds are exceeded for longer than 1 µs (open loop) or 5 µs (overvoltage), the PFC gate drive stops working
until the voltage drops below 105 % or exceeds the 12.5 % level. If the bus overvoltage (> 109 %) lasts for longer
than 625 ms in run mode, the inverter gates also shut off and a power-down with complete restart is attempted
(Figure
Figure 15
2.4.2.2
When the rated bus voltage is in the corridor of 12.5 % < V
voltage exceeds the 95 % threshold
Another threshold is activated when the IC enters the run mode (phase 8). If the rated bus voltage drops below
75 % for longer than 84 µs, a power-down with a complete restart is attempted when a counter exceeds 800 ms.
In the case of short-term bus undervoltage (the bus voltage reaches its working level in run mode before exceeding
typically 800 ms (min. 500 ms)) the IC skips phases 1 to 5 and starts with ignition (see
for emergency lighting). The internal reference level of the bus voltage sense V
bus voltage) with a high accuracy. A surge protection is activated in the case of a rated bus voltage of V
109 % and a low side current sense voltage of V
longer than 500 ns.
Preliminary Data Sheet
12.5 %
Voltage V
Rated BUS
109 %
105 %
100 %
BUSrated
95 %
75 %
30 %
0%
V
BR
15).
V
V
V
V
V
V
CC
PFCVS
PFCVS
PFCVS
PFCVS
PFCVS
PFCVS
< 12.5 %) in phases 3 to 8, the IC shuts off the gate drives of the PFC within 5 µs or 1 µs respectively.
60ms
< 10.6 V V
1
Bus Voltage 95 % and 75 % Sensing
Bus Overvoltage and PFC Open Loop
= 2.625V
= 2.500V
= 2.375V
= 1.875V
= 0.313 V
PFC Bus Voltage Operating Level and Error Detection
= 2.725V
CC
35ms
< 14.1 V
2
CC
130 µs
BUS Over Voltage: Stops PFC Gate Drive within 5µs Auto Restart when V
PFC Open Loop / keeps all Gate Drives within 1µs Auto Restart / t > 1µs Stops PFC FET till V
> 14.0 V). After power-up, the IC senses the bus voltage below 12.5 % (open loop) or
V
BUS
80ms
>95%
3
Soft Start
11ms
(Figure
4
0 - 2500 ms
Preheating
15, phase 3) within 80 ms before entering the soft start phase 4.
5
LSCS
> 1.6 V in pre-run mode, or V
24
40 - 237ms
(Figure
Ignition
Controller for Fluorescent Lamp Ballasts
6
BUSrated
16) and provided by an 8-bit sigma/delta A/D
< 109 %, the IC will check whether the bus
Typical rated Bus Voltage Level
BR
Pre-Run
625ms
< 109 % / t > 625ms PD V
7
PFCVS
BUSrated
ERROR Corridor
Under Voltage V
t < 800ms AR without Preheating
t > 800ms AR with Preheating
Run Mode into normal Operation
LSCS
Section 2.7.1
BR
is 2.5 V (100 % of the rated
> 12.5%
Functional Description
BUSrated
> 109 %) or open loop
> 0.8 V in run mode for
BR
< 105%
8
BR
AR
CbC = Cycle by Cycle
V1.1, 2012-04-10
< 75%
AR = Auto Restart
PD = Power Down
< 109 %. If these
BUSrated
ICB2FL03G
Fault U
for conditions
< 105 %)
Mode /
Time
BUS
>