E-L6571BD, E-L6571BD013TR, L6571, L6571A, L6571AD, L6571AD013TR, L6571B, L6571BD, L6571BD013TR

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L6571A L6571B
HIGH VOLTAGE HALF BRIDGE DRIVER WITH OSCILLATOR
s s s s

HIGH VOLTAGE RAIL UP TO 600V BCD OFF LINE TECHNOLOGY 15.6V ZENER CLAMP ON VS DRIVER CURRENT CAPABILITY: - SINK CURRENT = 270mA - SOURCE CURRENT = 170mA VERY LOW START UP CURRENT: 150uA UNDER VOLTAGE LOCKOUT WITH HYSTERESIS PROGRAMMABLE OSCILLATOR FREQUENCY DEAD TIME 1.25us (L6571A) or 0.72us (L6571B) dV/dt IMMUNITY UP TO 50V/ns ESD PROTECTION

s s s s s s

Minidip

SO8

ORDERING NUMBERS: L6571A L6571AD L6571B L6571BD

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 nchannel power MOSFET and IGBT. The internal logic assures a dead time to avoid cross-conduction of the power devices. Two version are available: L6571A and L6571B. They differ in the internal dead time: 1.25us and 0.72us (typ.)

DESCRIPTION The device is a high voltage half bridge driver with built in oscillator. The frequency of the oscillator can be programmed using external resistor and capaciBLOCK DIAGRAM

H.V. CVS VS 1 RHV BOOT 8

BIAS REGULATOR

LEVEL SHIFTER

7 HIGH SIDE DRIVER

HVG

CBOOT

VS RF RF CF
COMP

2

BUFFER 6 OUT LOAD

CF

3

COMP

VS LOGIC LOW SIDE DRIVER 5
D96IN433

LVG

GND

4

September 2000

1/8

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E-L6571BD DATASHEET