Stepper Motor Driver – PoStep25-256

The PoStep25-256 is a high-performance, cost-effective bipolar stepper motor driver. Firstly the driver incorporates advanced architecture and surface mount technology. Secondly copper on the printed circuit board is 2 times thicker than in most Printed Circuit Boards. In conclusion, PoStep25-32 has a state-of-the-art thermal design. Thick copper and additional heatsink quarante the best thermal performance and low heating. Low footprint, high power density, and robust design is a key for reliable bipolar stepper motor driving. There are 4 microswitches on the PoStep25-256. Thus, fast and reliable settings for micro-steps and decay. Moreover switching between mixed and fast decay and settings between full step and 256 micro-step can be made.

Many bipolar stepper motor drivers are linear what is the reason for heating. However, PoStep25-256 is a chopping bipolar stepper motor driver. Therefore it has much better energy efficiency and lowers heating.

It can drive bipolar stepper motors at a maximum of 2,5A. Besides Nema17, also some Nema23 stepper motors can be driven.

Specifications:

• 0.5 to 2.5 Amps Phase Current
• Simple current setting with jumper
• Compatible with 4, 6, and 8 wire bipolar stepper motors of any voltage
• +10 VDC to +30 VDC Power Supply
• 1, 2, 4, 8, 16, and 32 Micro-steps
• Mixed decay mode thus smoother moving of motors
• 3,3V and 5V logic compatible inputs
• 250 kHz Max Step Rate
• 0 °C To 70 °C Operating Temperature
• LED Power, Error, and Enable Indicator
• Improved thermal managing
• Small Size: 50 mm X 52 mm

Compatible with the following CNC Controller Boards:

• CNC USB Controller Mk3 ( 4 ) axes
• CNC USB Controller Mk3 ( 9 ) axes
• Pokeys57CNC Controller