原标题：Allegro SX68000M高压三相马达驱动解决方案

　　Allegro公司的SX68000M是高压三相马达驱动器,可以控制三相全桥电路,额定功率为250V/2A,500V/1.5A或500V/2.5A.驱动器集成了保护功能如UVLO,OCP,热关断(TSD)以及限流(OCL)和预驱动器等.主要用在小型马达控制如空调风扇和白色家电冷却风扇.本文介绍了SX68000M主要特性和优势以及典型应用电路图.

　　High Voltage 3-Phase Motor Drivers

　　The SX68000M series provides the solution for controlling 3-phase full bridges that utilize MOSFETs rated at 250 V/2 A, 500 V/1.5 A, or 500 V/2.5 A.

　　The IC includes in a single package: protection functions such as UVLO (protection circuit for controlling power supply voltage drop), OCP (overcurrent protection), TSD (thermal shutdown), and OCL (current limiting), and a pre-driver with ¯ F¯O¯ (Fault Output) terminal and bootstrap diodes with limit resistors.

　　The SX68000M series is packaged in a fully-molded SOP with 27 pins at 1.2 mm pitch. Body size: 22 × 14.1 × 2.1 mm.

　　SX68000M主要特性和优势:

　　▪ Built-in bootstrap diodes with limit resistors

　　▪ Built-in protection circuit for controlling power supply voltage drop (UVLO)

　　▪ Built-in Thermal Shutdown (TSD)

　　▪ Built-in Current Limiter (OCL)

　　▪ 7.5 V regulated output

　　SX68000M应用:

　　▪ Small motor control:

　　▫ Air conditioning fan

　　▫ White goods cooling fans

　　图1.SX68000M功能方框图

　　图2.SX68000M采用限流功能的典型应用电路图