TB6600 Stepper Motor Driver – 4.0A, 9–42VDC Compatible with NEMA 17 / 23 / 34 (42 / 57 / 86 Type) Stepper Motors The upgraded TB6600 stepper motor driver is designed for reliable and precise control of two-phase hybrid stepper motors. Featuring up to 32 microstepping subdivisions and a 4.0A peak output current, this driver delivers smooth motion control for a wide range of small and medium-sized automation equipment. Engineered for enhanced segmentation performance, this upgraded version improves motion accuracy and operational stability while maintaining compact size and efficient heat management. Key Features Power Supply: DC 9–42V (12–30V recommended for best performance) Output Peak Current: 4.0A Microstepping Options: 1 / 2A / 2B / 4 / 8 / 16 / 32 Adjustable Output Current (8 levels):0.5A / 1.0A / 1.5A / 2.0A / 2.5A / 2.8A / 3.0A / 3.5A Control Signal Input Voltage: 3.3–24V (no series resistor required) Drive Type: H-bridge bipolar constant current drive High-Speed Optocoupler Isolation for input signals Built-in Temperature Protection Overcurrent Protection Automatic Half-Current Function to reduce heat generation Motor Noise Optimization Function Compact design for easy integration Compatibility Applicable stepper motors: 42, 57, 86 type 2-phase / 4-phase 4-wire, 6-wire, and 8-wire configurations Suitable for two-phase hybrid stepping motors with phase current below 4.0A. Best application: 57 stepper motors 42 stepper motors with torque of 1.8N.m and below Applications Widely used in small and medium-sized automation equipment, including: Engraving machines Marking machines Cutting machines Laser phototypesetting machines Plotters CNC machine tools Crystal grinding machines Automatic assembly equipment Technical Specifications Specification Details Model TB6600 (Upgraded Version) Supply Voltage DC 9–42V Recommended Voltage 12–30V Output Peak Current 4.0A Adjustable Current Levels 0.5A / 1.0A / 1.5A / 2.0A / 2.5A / 2.8A / 3.0A / 3.5A Microstepping 1 / 2A / 2B / 4 / 8 / 16 / 32 Control Signal Voltage 3.3–24V Drive Type H-bridge bipolar constant current Protection Functions Temperature protection, overcurrent protection Isolation High-speed optocoupler Size Small This upgraded TB6600 driver provides stable, precise, and efficient stepper motor control, making it a dependable solution for CNC and automation applications.