ICB1FL03G Datasheet, PDF (35/38 Pages) Infineon Technologies AG – Smart Ballast Control IC for Fluorescent Lamp Ballasts

ICB1FL03G
Application Examples
7.3 Other Ballast Topologies
How to use ICB1FL03G in alternative topologies is demonstrated in the subsequent figures. In Fig. 18 we see an
application for a single lamp with current mode preheating. Compared with Fig. 17 the difference is the connection
of the resonant capacitor in series with the filaments. In respect of operating behaviour the current mode
preheating cannot be designed with same variation of operating parameters: the preheating current is typically
lower and lamp voltage during preheating higher than in topologies with voltage mode preheating.
Figure 19 shows an application circuit of a ballast for a multi fluorescent lamp design in serial with voltage mode
preheating
C5
L10
D1...4
C1 C4
90 ... 270 VAC
PE
C2
C3
L1
R34
R41
R42 R43
R35
R1 _Q1
R2
D5 ^R13
R14
R15
R16
R11 ^C10
PFCZCD
PFCGD
PFCVS
PFCCS
R3 R12
R26
HSGD
HSVCC
HSGND
C14
R27
LSGD
LSCS
D6
Q2
C17
C15
Q3
C16
C18
D7
K2 K1
L2
C24
K6 K5
R36
R18 R19 C11R20
R61
D9
R21R22R23 R30
C12
C13
R24R25
C61
SMD
D8 D61 C19
SMD-Z
Figure 18 Application Circuit of a Ballast for a single Fluorescent Lamp with Current Mode Preheating.
C5
L10
D1...4
C1 C4
90 ... 270 VAC
PE
C2
C3
L1
R34
R41
R42 R43
R35
L21 C21
R1 _Q1
R2
D5 ^R13
R14
R15
R16
R11 ^C10
PFCZCD
PFCGD
PFCVS
PFCCS
R26
HSGD
HSVCC
HSGND
C14
R27
LSGD
LSCS
Q2
C17
C15
Q3
C16
C18
R3 R12
D6
D7
R18 R19 C11R20
R61
D9
R21R22R23 R30
C12
C13
R24R25
D8
K2 K1
C25
L2
C20
C24
L23
C23
K4 K3
C61
SMD
K6 K5
D61
SMD-Z
L22 _C22 R36
C19
Figure 19 Application Circuit of a Ballast for a Multilamp Design in Serial with Voltage Mode Preheating
Preliminary Datasheet Version 1.02
35
March 2009