A3983屬于集成電路（IC）的電機(jī)驅(qū)動器控制器。由Allegro MicroSystems制造生產(chǎn)的A3983電機(jī)驅(qū)動器，控制器產(chǎn)品屬于電機(jī)驅(qū)動器和控制器電源管理集成電路 (PMIC) 系列，可用于控制或操作從某電源施加到電機(jī)或相關(guān)機(jī)電執(zhí)行器的電源。所實現(xiàn)的具體功能和特性集根據(jù)預(yù)期負(fù)載和預(yù)期應(yīng)用的特性有很大差異，范圍從用于有刷電機(jī)的簡單開環(huán)速度控制到基于步進(jìn)電機(jī)的高級閉環(huán)運動控制。

DMOS Microstepping Driver with Translator

The A3983 is a complete microstepping motor driver with built-in translator for easy operation. It is designed to operate bipolar stepper motors in full-, half-, quarter-, and eighth-step modes, with an output drive capacity of up to 35 V and ±2 A. The A3983 includes a fixed offtime current regulator which has the ability to operate in Slow or Mixed decay modes.

The translator is the key to the easy implementation of the A3983. Simply inputting one pulse on the STEP input drives the motor one microstep. There are no phase sequence tables, high frequency control lines, or complex interfaces to program. The A3983 interface is an ideal fit for applications where a complex microprocessor is unavailable or is overburdened.

FEATURES

■ Low RDS(ON) outputs

■ Automatic current decay mode detection/selection

■ Mixed and Slow current decay modes

■ Synchronous rectification for low power dissipation

■ Internal UVLO and thermal shutdown circuitry

■ Crossover-current protection