DESCRIPTION

The L6228 is a DMOS Fully Integrated Stepper Motor Driver with non-dissipative Overcurrent Protection, realized in MultiPower-BCD technology, which combines isolated DMOS Power Transistors with CMOS and bipolar circuits on the same chip. The device includes all the circuitry needed to drive a two-phase bipolar stepper motor including: a dual DMOS Full Bridge, the constant off time PWM Current Controller that performs the chopping regulation and the Phase Sequence Generator, that generates the stepping sequence.

■ OPERATING SUPPLY VOLTAGE FROM 8 TO 52V

■ 2.8A OUTPUT PEAK CURRENT (1.4A RMS)

■ RDS(ON) 0.73Ω TYP. VALUE @ Tj = 25°C

■ OPERATING FREQUENCY UP TO 100KHz

■ NON DISSIPATIVE OVERCURRENT PROTECTION

■ DUAL INDEPENDENT CONSTANT tOFF PWM CURRENT CONTROLLERS

■ FAST/SLOW DECAY MODE SELECTION

■ FAST DECAY QUASI-SYNCHRONOUS RECTIFICATION

■ DECODING LOGIC FOR STEPPER MOTOR FULL AND HALF STEP DRIVE

■ CROSS CONDUCTION PROTECTION

■ THERMAL SHUTDOWN

■ UNDER VOLTAGE LOCKOUT

■ INTEGRATED FAST FREE WHEELING DIODES

TYPICAL APPLICATIONS

■ BIPOLAR STEPPER MOTOR

L6228N属于集成电路（IC） > 电机驱动器，控制器。意法半导体（ST）集团制造生产的L6228N电机驱动器，控制器产品属于电机驱动器和控制器电源管理集成电路 (PMIC) 系列，可用于控制或操作从某电源施加到电机或相关机电执行器的电源。所实现的具体功能和特性集根据预期负载和预期应用的特性有很大差异，范围从用于有刷电机的简单开环速度控制到基于步进电机的高级闭环运动控制。