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
µA
UNDER VOLTAGE LOCKOUT WITH
HYSTERESIS
PROGRAMMABLE OSCILLATOR
FREQUENCY
DEAD TIME 1.25µs
dV/dt IMMUNITY UP TO
±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
µ
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
STMICROELECTRONICS [ STMICROELECTRONICS ]
