ICB1FL03G Infineon Technologies, ICB1FL03G Datasheet - Page 30

• 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

control loop is completely integrated with a digital filter and error amplifier. PFC overcurrent is sensed by R18,
R19, Bus overvoltage and undervoltage at pin PFCVS. A bypass diode D11 between the DC side of the mains
rectifier and BUS capacitor is recommended in order to avoid an overload of the PFC MOSFET Q1.
7.2
Subsequent the design equations are listed:
Start-up resistors R11, R12:
Selected value: R11= 470k; R12= 470k
Current limitation resistor R13 of PFC zero current detector (PFCZCD).
The additional factor 2 is used in order to keep away from limit value.
Selected value: R13= 33k.
PFC Voltage sense resistor R20:
Selected value: R20= 10k.
PFC Voltage sense resistors R14, R15:
Selected values: R14= 820k; R15= 820k
Low pass capacitor C11:
Selected corner frequency f
Selected value C3= 2,2nF
PFC Shunt resistors R18, R19:
Selected values: R18= 2,2Ohm; R19= 2,2Ohm
Set resistor R21 for run frequency, at a projected run frequency of 45kHz:
Preliminary Datasheet Version 1.02
Design Equations of a Ballast Application
C
11
=
R
---------------------------------------------------------------------------
2 π f
14
⋅
1
+
⋅
⋅
R
C1
(
C1
R
R
15
= 10kHz.
20
13
⋅
R
=
R
R
+
11
=
20
20
V
-------------------------------------- - R
R
+
-----------------------------------------------------------
I
BUS
14
⋅
≤
PFCZCD
R
(
------------------------------------------
100 I
R
V
V
+
12
14
BUS
REF
R
–
⋅
15
=
+
V
V
PFCBIAS
R
REF
)
-------------------------
I
REF
V
⋅
VCCqu2
15
N
⋅
INMIN
N
SEC
)
PRIM
⋅
=
20
-------------------------------------------------------------------------------------- -
2 π 10kHz 10k
⋅
30
2
⋅
=
=
=
⋅
1
⋅
------------------------------ -
100 2 5µA
1
---------------- -
150µA
410V
------------------------------------- - 10k
200V
=
⋅
2 50V
(
,
---------------------------------
4mA 128 1
⋅
10k
410V 13 2
2 5V
–
,
,
(
⋅
+
=
2 5V
⋅
,
820k
⋅
1 33MΩ
,
=
⋅
)
⋅
(
⋅
820k
+
10kΩ
⋅
820k
=
20 8kΩ
+
=
)
820k
,
Application Examples
1630kΩ
)
=
1 60nF
,
ICB1FL03G
March 2009