L6571A Datasheet, PDF (1/7 Pages) STMicroelectronics – HIGH VOLTAGE HALF BRIDGE DRIVER WITH OSCILLATOR

L6571A
®
L6571B
HIGH VOLTAGE HALF BRIDGE
DRIVER WITH OSCILLATOR
TECHNOLOGY: BCD ”OFF-LINE”
FLOATING SUPPLY VOLTAGE UP TO 600V
GND REFERRED SUPPLY VOLTAGE UP TO
18V
DRIVER CURRENT CAPABILITY:
- SINK CURRENT = 270mA
- SOURCE CURRENT = 170mA
VERY LOW START UP CURRENT: 150µA
VERY LOW OPERATING CURRENT: <2mA
UNDERVOLTAGE LOCKOUT
PROGRAMMABLE OSCILLATOR
FREQUENCY
dV/dt IMMUNITY UP TO ± 50V/ns
DESCRIPTION
The device is a high voltage half bridge driver
with built-in oscillator. The frequency of the oscil-
lator can be programmed using external resistor
BLOCK DIAGRAM
Minidip
SO8
ORDERING NUMBERS:
L6571A
L6571B
L6571AD
L6571BD
and capacitor.
The output drivers are designed to drive external
n-channel power MOSFET and IGBT. The inter-
nal logic assures a minimum dead time to avoid
cross-conduction of the power devices.
C_VS
V_S
R_HV
BOOT
H.V.
R_F
R_F
C_F
C_F
GND
June 2000
BIAS
REGULATOR
LEVEL
SHIFTER
V_S
HVG
HIGH
SIDE
DRIVER
BUFFER
OUT
COMP
COMP
LOGIC
V_S
LOW SIDE
DRIVER
LVG
C_BOOT
LOAD
D96IN433
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