L6571屬于集成電路（IC）的柵極驅(qū)動器。由意法半導體集團制造生產(chǎn)的L6571柵極驅(qū)動器柵極驅(qū)動器電源管理集成電路 (PMIC) 可用于提供隔離、放大、參考位移、自舉或其他必要功能，這些功能可將來自電源轉(zhuǎn)換應用中控制設備的信號連接到電源被控制通過的半導體設備（通常為 FET 或 IGBT）。任何特定設備提供的確切功能各不相同，但與它適合驅(qū)動的半導體配置相關。

特性 Features

■ High voltage rail up to 600 V

■ BCD off line technology

■ 15.6 V Zener clamp on Vs

■ Driver current capability:

– Sink current = 270 mA

– Source current = 170 mA

■ Very low start up current: 150 mA

■ Undervoltage lockout with hysteresis

■ Programmable oscillator frequency

■ Dead time 1.25 μs (L6571A) or 0.72 μs

(L6571B)

■ dV/dt immunity up to ±50 V/ns

■ ESD protection

描述 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

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 to avoid crossconduction of the power devices.

Two version are available: L6571A and L6571B.

They differ in the internal dead time: 1.25μs and

0.72 μs (typ.)