TB6560 3A Stepper Motor Driver Board for CNC Engraving with 6N137 Optocoupler

This TB6560 stepper motor driver is a fully tested module designed for motion control equipment such as engraving machines and placement machines. It delivers rated output of ±3A (peak 3.5A) and is compatible with two-phase, four-phase, four-wire, and six-wire stepper motors within 42 and 57 steps and up to 3A. The board uses a Toshiba TB6560AHQ chip along with a 6N137 high-speed optocoupler to ensure reliable stepping even at higher speeds, reducing the chance of lost steps. With adjustable current levels and automatic half-flow function, this driver offers practical flexibility for various CNC and automation applications. However, note that the module does not include its own protection circuit, so careful handling and proper heat dissipation are essential.

Features and Construction

The driver board incorporates several design elements that support stable operation and ease of use. Here are its key construction details.

Material and Build

The board uses a Toshiba TB6560AHQ brand new original chip, which includes low-voltage shutdown, over-temperature shutdown, and over-current protection circuits. A 6N137 high-speed optocoupler is used to maintain signal integrity at high step rates. The PCB is fitted with a thick and dense tooth radiator to aid heat dissipation. The board measures 50mm wide, 75mm long, and 35mm high.

Size and Practical Fit

At 50mm x 75mm x 35mm, the driver is compact enough for integration into many CNC controller enclosures or project boxes. Its dimensions allow it to be mounted alongside other control electronics without excessive space requirements. The terminal blocks accept standard screw connections for power and motor wiring.

Uses and Placement

This stepper driver is suited for a range of motion control tasks, from DIY CNC builds to small production equipment.

Event or Professional Use

In professional settings such as engraving or pick-and-place machines, the driver's high-speed optocoupler and adjustable current settings help maintain positioning accuracy during repetitive operation. The automatic half-flow function reduces motor heating when idle, which can extend motor life in continuous-use machinery.

Everyday Home Use

For hobbyists building 3D printers, laser engravers, or small CNC mills, the TB6560 driver offers a straightforward way to control 42 or 57 stepper motors up to 3A. The adjustable current allows tuning to match specific motor ratings, and the board's compact footprint fits well in typical DIY control boxes.

Benefits and Buying Value

This product provides practical value through tested reliability and useful features for motor control.

Reuse and Low Maintenance

With proper cooling and within its voltage limits, the driver can be used repeatedly across multiple projects. The absence of a protection circuit means the user must take care with wiring and supply voltage, but the chip's own over-temperature and over-current safeguards offer a layer of security. Cleaning is limited to keeping the radiator and PCB free of dust.

Why Choose This Product

Compared to generic unbranded drivers, this unit uses a genuine Toshiba TB6560AHQ chip and a 6N137 optocoupler, both of which are specified in the source text. The inclusion of plate printing setting instructions on the board means you can set up the driver without always referring to a manual. The thick, dense tooth radiator improves heat dissipation compared to simpler heatsinks. These concrete details make it a reliable choice for controlled motion tasks.