The XH190 is a high-performance, two-phase hybrid stepper motor driver. Typically found under brands like SZDJW, it is designed to drive NEMA 23 and NEMA 34 stepper motors. While it is often compared to the industry-standard Leadshine drivers, the XH190 has carved out a niche for offering similar performance metrics at a more accessible price point.
It is commonly used in applications requiring high torque and precision, such as:
Application: Driving a single 10W LED (9V @ 1A) from a 24V DC supply. xh190 driver
The Enable pin (ENA+) allows software to disable the driver output. Most users leave it disconnected (enabled by default).
The XH190 driver—in both software and hardware contexts—requires careful handling: The XH190 is a high-performance, two-phase hybrid stepper
The XH190 employs a hysteretic constant current control topology. Unlike fixed-frequency PWM drivers, it uses a comparator to monitor the current sense voltage across an external resistor. When current falls below a low threshold, the internal MOSFET turns on; when it exceeds a high threshold, the MOSFET turns off. This results in a variable switching frequency but provides excellent transient response and inherent short-circuit protection.
Basic Connection Diagram Components:
The default latency timer for serial drivers is often 16 ms. For CNC or 3D printing, this causes stuttering. To reduce it: