ICB2FL02G Infineon Technologies, ICB2FL02G Datasheet - Page 20

• Manufacturer Part Number: ICB2FL02G
• Description: IC SMART BALLAST CONTROL DSO-19
• Manufacturer: Infineon Technologies
• Type: Ballast Controllerr

Specifications of ICB2FL02G

• Frequency: 20 ~ 120 kHz
• Current - Supply: 4.2mA
• Operating Temperature: -25°C ~ 125°C
• Package / Case: DSO-19
• Packages: PG-DSO-19
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Voltage - Supply: -
• Lead Free Status / Rohs Status: Details
• Other names: ICB2FL02GINTR

2.4
2.4.1 Discontinuous Conduction and Critical Conduction Mode Operation
The digital controlled PFC pre converter starts with an internally fixed ON time of typical t
and variable frequency. The ON – time is enlarged every 280 µs (typical) up to a maximum ON – time
of 22.7 µs. The control switches quite immediately from the discontinuous conduction mode (DCM)
over into critical conduction mode (CritCM) as soon as a sufficient ZCD signal is available. The
frequency range in CritCM is 22 kHz until 500 kHz, depending on the power (Figure 14) with a
variation of the ON time from 22.7 µs > t
Figure 14 Operating Frequency and ON Time versus Power in DCM and CritCM Operation
For lower loads (P
conduction mode (DCM) with an ON – time from 4.0µs and increasing OFF – time. The frequency
during DCM is variable in a range from 144 kHz down to typically 22 kHz @ 0.1 % Load (Figure 14).
With this control method, the PFC converter enables a stable operation from 100 % load down to 0.1
%. Figure 14 shows the ON time range in DCM and CritCM (Critical Conduction Mode) operation. In
the overlapping area of CritCM and DCM is a hysteresis of the ON time which causes a negligible
frequency change.
2
Preliminary Datasheet
Normalized Power @ Low Line Input Voltage and maximum Load
1000,00
100,00
10,00
1,00
0,10
0,01
PFC Pre Converter
0,01
Discontinuous Conduction Mode (DCM) <> Critical Condution Mode (CritCM)
OUTNorm
< 8 % from the normalized load
2
0,10
Frequency DCM
nd
Generation FL-Controller for FL-Ballasts
ON
> 0.5µs.
Page 20 of 55
Normalized Output Power [% ]
Frequency CritCM
1,00
2
) the control operates in discontinuous
Ton DCM
Functional Description
Ton CritCM
10,00
ON
ICB2FL02G
= 4.0µs
V1.2
100,00
100,00
10,00
1,00
0,10