S ECOND-GENERATION POWER FACTOR CONTROLLER
LX1562/1563
PRODUCT DATABOOK 1996/1997
Copyright © 1996
Rev. 1.3a 8/30
22
P
RODUCTION DATA SHEET
TYPICAL APPLICATIONS
120V
Ref. Component Manuf.
120VAC Input — 230VDC / 80W Output
Electrical
Specifica-
tion
IC LX1562 Linfinity
L1 PQ2625/H7C1 Core TDK
Q1 IRF730, 400V, 1Ω rds I.R.
D1-D4 IN4004 1A, 400V Motorola
D5 1N4935 1A Motorola
D6 1N4148
(improves Q1 power dissipation)
Motorola
D7 MR854, 3A, 400V Motorola
R1 2.2MΩ, ±1%
R2 26.7kΩ, ±1%
R3 100kΩ, ½W
R4 22kΩ
R5 47Ω
R6 1.5Ω, Carbon type (3X)
R7 1MΩ, 1%
R8 11kΩ, 1%
R9 620kΩ
(improves load transient response)
R10 4.7MΩ
C1 QXF2E105KRPT
1µF/250V - Plastic Film (high freq.) Nichicon
C2 22µF/35V - Electrolytic
C3 0.1µF/50V - Ceramic
C4 0.01µF/50V - Ceramic
C5 0.1µF/50V - Ceramic
C6 LGQ2G101MHS A/Z* Nichicon
100µF/400V - Electrolytic
* A = 25mm diam.
Z = 22mm diam.
Ref. Component Manuf.
FIGURE 36 — TYPICAL APPLICATION OF THE LX1562 IN AN 80W
FLUORESCENT LAMP BALLAST WITH ACTIVE POWER FACTOR CONTROL.
Note: Thick trace on schematic shows high-frequency, high-current path in circuit. Lead lengths
must be minimized to avoid high-frequency noise problems.
V
IN
I
DET
OUT
COMP
INV
C.S.
GND
MULT
LX1562
Q1
V
BOOST
FLOURESCENT LAMP BALLAST
IN
5
8
7
2
1
4
6
3
120V
AC
R4
R3
R1
C1
R2
C4
D5
C2
R5
C5
R7
C6
D7
R8
R9
R6
D6
AC+
AC-
D1
450µH
61T
7T
D3
D2 D4
C3
L1
#26AWG
#22AWG
R10
A complete evaluation board is available from Linfinity Microelectronics Inc.
OBSOLETE PRODUCT
NOT RECOMMENDED FOR NEW DESIGNS
