L6567D 查看數據表（PDF） - STMicroelectronics

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L6567D

HIGH VOLTAGE DRIVER FOR CFL

STMicroelectronics 

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

LOGIC

to

C

comp.

10

Ref

RREF

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.

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