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L6569

L6569A

HIGH VOLTAGE HALF BRIDGE

DRIVER WITH OSCILLATOR

s

s

s

s

s

HIGH VOLTAGE RAIL UP TO 600V

BCD OFF LINE TECHNOLOGY

INTERNAL BOOTSTRAP DIODE

STRUCTURE

15.6V ZENER CLAMP ON V

S

DRIVER CURRENT CAPABILITY:

- SINK CURRENT = 270mA

- SOURCE CURRENT = 170mA

VERY LOW START UP CURRENT: 150

碌A(chǔ)

UNDER VOLTAGE LOCKOUT WITH

HYSTERESIS

PROGRAMMABLE OSCILLATOR

FREQUENCY

DEAD TIME 1.25碌s

dV/dt IMMUNITY UP TO

鹵50V/ns

ESD PROTECTION

Minidip

SO8

s

s

s

s

s

s

ORDERING NUMBERS:

L6569

L6569D

L6569A

L6569AD

be programmed using external resistor and capaci-

tor. The internal circuitry of the device allows it to be

driven also by external logic signal.

The output drivers are designed to drive external n-

channel power MOSFET and IGBT. The internal log-

ic assures a dead time [typ. 1.25

碌

s] to avoid cross-

conduction of the power devices.

Two version are available: L6569 and L6569A. They

differ in the low voltage gate driver start up sequence.

DESCRIPTION

The device is a high voltage half bridge driver with

built in oscillator. The frequency of the oscillator can

BLOCK DIAGRAM

H.V.

C

VS

1

Source

CHARGE

PUMP

BIAS

REGULATOR

V

S

R

F

R

F

C

F

COMP

V

S

R

HV

BOOT

8

LEVEL

SHIFTER

7

HVG

C

BOOT

2

BUFFER

HIGH

SIDE

DRIVER

6

OUT

LOAD

C

F

3

COMP

V

S

LOGIC

LOW SIDE

DRIVER

5

LVG

GND

4

D94IN058D

June 2000

This is preliminary information on a new product now in development. Details are subject to change without notice.

1/13

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