A4988 Stepper Motor Driver Module

Description A4988 Stepper Motor Driver Module

The A4988 Stepper Motor Driver Module is an advanced device designed for controlling bipolar stepper motors. This module offers the possibility to work in various step modes. full, half, 1/4, 1/8 and 1/16, allowing users to control the motor's movement with precision. With an output power reaching 35 V and ±2 A, the A4988 supports a wide range of stepper motors. A notable feature is the built-in translator, which simplifies implementation. A single pulse on the STEP input causes a micro-step movement of the motor. This without the need for complex control schemes or frequency management.

The module automatically selects the optimal current draw mode, Slow or Mixed, for efficient performance. In Mixed mode, the A4988 combines fast and slow decay to minimize noise, increase step accuracy and reduce energy consumption. In addition, the internal synchronous rectification ensures more efficient energy use during PWM control. The A4988 also protects itself against various risks with features such as thermal shutdown, undervoltage lockout and overcurrent protection, which increases durability and reliability.

Features A4988 Stepper Motor Driver Module

• Various Step Modes: Full, 1/2, 1/4, 1/8, and 1/16 steps for flexible control.

• Simple Implementation: Built-in translator simplifies motor control.

• Energy efficient: Automatic selection of current collection mode and internal synchronous rectification.

• Compatibility: Supports 3.3 and 5 V logic power supplies.

• Protection functions: Includes thermal shutdown, undervoltage blocking and overcurrent protection.

• Noise minimization: Mixed-decay mode reduces audible engine noise.

• High Output Capacity: Supports up to 35 V and ±2 A.