EVAL6574B Datasheet, PDF (5/8 Pages) STMicroelectronics – Dimmable fluorescent lamp ballast

EVAL6574B
Board description
Reference Part value
Part description
C4
680 nF Capacitor 50 V
C5
100 nF Capacitor 50 V
C6
22 µF
Electrolytic capacitor, 450 V low ESR
C7
4.7 µF
Electrolytic capacitor, 35 V
C8
100 nF Capacitor 50 V
C9
8.2 nF
Capacitor 50 V
C10
4.7 nF
Capacitor 50 V
C11
680 pF Film capacitor 630 Vdc
C12
100 nF Capacitor 50 V
C13
1 µF
Capacitor 50 V
C14
100 nF Capacitor 50 V
C15
330 nF Capacitor 50 V
C16
470 nF Capacitor 50 V
C17
100 nF Polypropilene capacitor 250 Vdc
C18
8.2 nF
Polypropilene capacitor 1600 Vdc
C19
100 nF Capacitor 50 V
F1
T 2A
Fuse 250 Vac – 2 A
T1
PFC transformer: 1.88 mH, 138 : 13 turns, core E25 – N87 or eq.
L2
2.1 mH Ballast inductor: 2 mH, 146 turns, core E25 – N87 or eq.
B1
W04M Rectifier bridge 4 A – 600 V
D1
1N4148 Diode
D2
STTH1L06 Turbo 2 ultrafast high voltage rectifier
D3
1N4148 Diode
D4
1N4148 Diode
D5
1N4148 Diode
DZ1
BZX79C15 15 V Zener diode
U1
L6562
PFC controller
U2
L6574
Ballast controller
Q1
STP5NK50Z N-channel 500 V – 1.22 Ω Zener-protected SuperMESH™ Power
MOSFET
Q2
STP4NK50Z N-channel 500 V – 2.4 Ω Zener-protected SuperMESH™ Power
MOSFET
Q3
STP4NK50Z N-channel 500 V – 2.4 Ω Zener-protected SuperMESH™ Power
MOSFET
CN1
3 way PCB connector 250 Vac, Pin distance 5.08 mm
CN2
5 way PCB connector 250 Vac Pin distance 5.08 mm
DocID024443 Rev 1
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