亚博棋牌游戏Allegro MicroSystems, LLC, step and direction for its products has added a new motor driver IC

亚博棋牌游戏Allegro MicroSystems, LLC, step and direction for its products has added a new motor driver IC

On October 8, 2013

Worcester, Massachusetts,- 亚博棋牌游戏Allegro MicroSystems, LLC to launch a new micro step motor drive, flexible with its built-in converter, can be realized easily.Allegro 'A4992Using single chip solutions, able to form a full step, half step, a quarter, and eight step into the model, with a 28 V (up to 50 V) voltage drive bipolar stepper motor.On startup, A4992 is configured to use a simple step by step and direction input drive most small stepper motor.A4992 through serial interface configuration include all the stall detection and advanced diagnosis.This new device for automotive and industrial market, its final application will include auto adaptive headlamps system, idle by-pass valve positioning, HVAC outlet positioning system, EGR valve, as well as the satellite positioning, solar panels and CCTV system.

Using a fixed frequency PWM current regulator, and using the adaptive hybrid current damping to reduce the audible noise of the motor and improving accuracy step by step.All phase current of motor by DMOS, control device of the whole bridge using synchronous rectifier, reduce the power dissipation.On the high side when switching between drive and low side drive, internal circuit and timer can prevent the transconductance and breakdown.

Output short circuit protection function, but also has low load current and rotor stall detection.The chip level protection including high temperature warning, thermal shutdown, over-voltage and under-voltage lockout.Using STEP, DIR and MS input, can use the optional serial interface mode configure multiple motor control parameters and diagnosis.

A4992KLPTR - T use 20 pins TSSOP package, power and install a exposed thermal pad (encapsulation type for LP).Fog lead (Pb) encapsulation, with 100% of tin plating pin frame.