ICB1FL01G Datasheet, PDF (31/38 Pages) Infineon Technologies AG – Smart Ballast Control IC for Fluorescent Lamp Ballasts

ICB1FL01G
Application Examples
-R-----1---8----^â‹---R----1---9---
R18 + R19
=
V-----P----F----C----C-----S---O-----4F----F_⋅---P--⋅_--O-η_----U-⋅_{---VT----PI---N-F----AC-----C----M------I--N------}⋅_-------2--
=
1----V------⋅_---0---,_{--4-9---5⋅---5-}⋅_{--5-1---W8---0----V------}⋅_-------2-
=
1, 1 Ω
R21
=
RFRUN
=
5-----⋅_{---1---0---8-----}⋅_---Ω_{-----H-----z-}
fRUN
=
-5----^â‹---1---0---8-----^â‹---^Ω-----H-----z-
40 k H z
=
12, 5kΩ
Set resistor R22 for preheating frequency, at a projected preheating frequency of 95kHz
R22
=
RFPH
=
-f-----P-------H-----------_â‹-R-----R----F------F-R------R---U------U----N------N--------–----1--
5
⋅
8
10
⋅
Ω
H
z
=
-9------5-------k-------H---------z--1------2-_⋅-----^,-1-----4-2------k_{,------4-------k------–----1--}
5
⋅
8
10
⋅
Ω
H
z
=
9, 14kΩ
Selected value: R22= 9,1k
Set resistor R23 for preheating time, at a projected preheating time of 1000ms
R23 = RTPH = -₍--1---2-T--5--P-m---H---s--^[)--m--_⁄--₍--s-k-^]--_Ω------₎ = -₍--1---2---5-1--m-0---0-s--0-₎--m--_⁄--₍-s--k---_Ω-----₎- = 8, 0kΩ
Selected value: R23= 8,2k
Gate drive resistors R16, R26, R27 are recommended to be equal or higher than 10Ohm.
Shunt resistors R24, R25
The selected lamp type 54W-T5 requires an ignition voltage of V_IGN= 800V peak. In our application example the
resonant inductor is evaluated to L2= 1,46mH and the resonant capacitor C20= 4,7nF. With this inputs we can
calculate the ignition frequency f_IGN :
fIGN =
---1-----^±-----V-^π--------B--^â‹------V-U--------I--S---G-------^{⋅--N----2------} =
4 ⋅ π² ⋅ L2 ⋅ C20
----------------1----^±-----^{π-4------1---⋅---0---8----V--0------0---â‹}----V--2------------------- = 69759Hz
4 ⋅ π² ⋅ 1, 46mH ⋅ 4, 7nF
Preliminary Datasheet Version 1.5
31
June 2005