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Numéro de référence | L6567 | ||
Description | HIGH VOLTAGE DRIVER FOR CFL | ||
Fabricant | STMicroelectronics | ||
Logo | |||
1 Page
L6567
HIGH VOLTAGE DRIVER FOR CFL
n BCD-OFF LINE TECHNOLOGY
n FLOATING SUPPLY VOLTAGE UP TO 570V
n GND REFERRED SUPPLY VOLTAGE UP TO
18V
n UNDER VOLTAGE LOCK OUT
n CLAMPING ON Vs
n DRIVER CURRENT CAPABILITY:
30mA SOURCE
70mA SINK
n PREHEAT AND FREQUENCY SHIFT TIMING
DESCRIPTION
The device is a monolithic high voltage integrated cir-
cuit designed to drive CFL and small TL lamps with a
minimum part count.
It provides all the necessary functions for proper pre-
heat, ignition and steady state operation of the lamp:
♦ variable frequency oscillator;
BLOCK DIAGRAM
MULTIPOWER BCD TECHNOLOGY
SO14
DIP14
ORDERING NUMBERS:
L6567D
L6567
♦ settable preheating and ignition time;
♦ capacitive mode protection;
♦ lamp power independent from mains voltage variation.
Besides the control functions, the IC provides the lev-
el shift and drive function for two external power MOS
FETs in a half-bridge topology.
VS 5
CF 12
CS Cf
CI 14
Ci
Vhv
Rhv
RHV
13
FEED FORWARD
Cp/Cav
CP
8
VS
PREHEATING
TIMING
LEVEL
SHIFTING
VCO +
FREQ. SHIFTING
VOLTAGE
REFERENCE
BIAS
CURRENT
GENERATOR
to
comp.
Ref
10
RREF
LOGIC
C
1 FS
HIGH
SIDE
DRIVER
2 G1
3 S1
LOW
SIDE
DRIVER
6 G2
7 PGND
11 SGND
9 RS
Vhv
T1
L
Chv
Lamp
T2
Rshunt
CL
Chv
D96IN441B
MAINS
January 2000
This is preliminary information on a new product now in development. Details are subject to change without notice.
1/15
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Pages | Pages 15 | ||
Télécharger | [ L6567 ] |
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