L6569A 电源管理芯片 门驱动器

L6569A

门驱动器 Hi-Volt Half Bridge HIGH VOLTAGE HALF BRIDGE  DRIVER WITH OSCILLATOR

DESCRIPTION L6569A

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 capacitor.  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 [typ. 1.25μs] to avoid crossconduction  of the power devices.

Two version are available: L6569 and L6569A. They  differ in the low voltage gate driver start up sequence.

Bootstrap Function

The L6569A has an internal Bootstrap structure that enables the user to avoid the external diode needed, in similar devices, to perform the charge of the bootstrap capacitor that, in turns, provide an appropriate driving to the Upper External Mosfet.

■ HIGH VOLTAGE RAIL UP TO 600V

■ BCD OFF LINE TECHNOLOGY

■ INTERNAL BOOTSTRAP DIODE

STRUCTURE

■ 15.6V ZENER CLAMP ON VS

■ DRIVER CURRENT CAPABILITY:

- SINK CURRENT = 270mA

- SOURCE CURRENT = 170mA

■ VERY LOW START UP CURRENT: 150μA

■ UNDER VOLTAGE LOCKOUT WITH

HYSTERESIS

■ PROGRAMMABLE OSCILLATOR

FREQUENCY

■ DEAD TIME 1.25μs

■ dV/dt IMMUNITY UP TO ±50V/ns

■ ESD PROTECTION