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A4988 Stepper Motor Drive Reprap (for 3D Printer)

A4988 Stepper Motor Drive Reprap (for 3D Printer)

A4988 Stepper Motor Drive Reprap (for 3D Printer)

 

  • A4988 is a complete microstepping motor shall drive with built-in translator for easy operation . The product is available in
    Full, half , operate bipolar stepper motors when 1,4,1 / 8 lightning 1 /16 step model. Output drive capability of up to 35 v and ± 2 A. A4988 includes a fixed off-time current regulator , the regulator can operate in slow or mixed decay mode sets . Converter is easy to implement key A4988 . Just type in "step" input - pulses , drives the motor micro-step . Without the need for phase sequence tables, high frequency control lines, or complex interfaces to program . A4988 interface is very suitable station complex microprocessor is unavailable or overloaded applications.
     
    In the micro-step operation, the chopper control A4988 automatically selects within the current decay mode ( slow or mixed units ) . In mixed units Decay mode , the device is initially set to fast decay in the part of the fixed off-time , and then a slow decay for the remainder of downtime. Mixed decay current control scheme results in reduced audible motor noise, increased step accuracy, and reduced power consumption. Internal synchronous rectification control circuitry provides to improve the pulse-width modulation (PWM) operation power consumption. Internal circuit protection includes thermal shutdown with hysteresis , undervoltage lockout (uvLO) and crossover current protection . Special power sequencing.

Product Features

     * Ground and load short-circuit protection
     * Adjustable current control
     * Intelligent chopping control
     * Over-temperature thermal shutdown
     * Undervoltage lockout
     * Crossover-current protection
     * Simple steps and direction control interface
     * Full step, half step, quarter-step, eighth step, sixteen step


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