ICB1FL03G Infineon Technologies, ICB1FL03G Datasheet - Page 33

• Manufacturer Part Number: ICB1FL03G
• Description: IC SMART BALLAST CONTROL DSO18
• Manufacturer: Infineon Technologies
• Type: PFC/Ballast Controllerr

Specifications of ICB1FL03G

• Frequency: 20 ~ 100 kHz
• Current - Supply: 5mA
• Voltage - Supply: 8.4 V ~ 17 V
• Operating Temperature: -25°C ~ 125°C
• Package / Case: 20-SOIC (0.300", 7.50mm Width) 18 leads
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Lead Free Status / Rohs Status: Details

Detection of capacitive mode operation via C18:
The DC level at pin RES is set by R36 and the source current I
∆ V
Selected value: C18= 82pF.
Bandpass filters L21/C21 and L22/C22 can be used in order to conduct filament currents preferred at preheating
frequency and to suppress these currents during run mode.
Inductor L1 of the boost converter:
The inductivity of the boost inductor typically is designed to operate within a specified voltage range above a
minimum frequency in order to get an easier RFI suppression. It is well known, that in critical conduction mode
(CritCM) there is a minimum operating frequency at low input voltages and another minimum at maximum input
voltage. In state-of-the-art CritCM PFC controllers we use the lowest value out of these two criterias:
At minimum AC input voltage:
At maximum AC input voltage
With the new control principle for the PFC preconverter we have a third criteria that covers the maximum on-time
t
With the assumed conditions the lowest value out of L
Selected value: L1= 1,58mH.
Preliminary Datasheet Version 1.02
PFCOM-MAX
ACRES
= 1,5V to 2,0V at a ∆ V
= 23,5µs:
L
L
L
B
L
A
A
B
=
=
=
=
BUS
(
---------------------------------------------------------------------------------------------------------------------------------------------------- -
C
(
----------------------------------------------------------------------------------------------------------------------------------------------- -
V
(
------------------------------------------------------------------------------------------------------------ -
18
(
------------------------------------------------------------------------------------------------------------ -
V
180V
270V
INACMAX
L
= 410V.
INACMIN
L
C
=
C
=
C
=
⋅
⋅
19
(
------------------------------------------------------------------- -
180
(
--------------------------------------------------------------------------------------------- -
2
4 25kHz 60 W 410V
2
4 25kHz 60 W 410V
V
⋅
)
)
⋅
⋅
INACMIN
∆V
-----------------------------
2
2
4 F
4 F
⋅
∆V
⋅
⋅
⋅
⋅
⋅
⋅
(
(
ACRES
410V
410V
2
MIN
MIN
2
2
BUS
)
4 60 W
2
)
)
2
2
⋅
⋅
⋅
⋅
4 P
⋅
⋅
23 5µs
–
–
(
⋅
(
⋅
⋅
A
33
V
V
P
P
, L
,
(
(
⋅
OUTPFC
270V
OUTPFC
180V
BUS
BUS
OUTPFC
=
B
⋅
⋅
2
, L
22nF
)
2
⋅
RES3
C
0 95
–
–
⋅
⋅
⋅
,
is 1,58mH.
T
(
(
V
V
⋅
2
ONMAX
2
. The preferred AC level is in the range between
-------------
410V
)
INACMAX
)
INACMIN
⋅
⋅
2V
) 0 95
) 0 95
=
V
V
⋅
⋅
BUS
BUS
6 03mH
,
,
,
=
107pF
⋅
=
=
η
3 89mH
1 58mH
⋅
⋅
,
,
2
2
)
Application Examples
) η
)
) η
⋅
⋅
ICB1FL03G
March 2009