HB420 is a constant-torque stepper motor driver. It is suitable for 2.00A or less external diameter of 42 mm, various types of hybrid stepper motors, with a rated voltage of DC12-36V. The drive circuit inside the product is similar to the principle of the servo control circuit. This circuit can make the motor run smoothly at low speed, with almost no vibration and noise. The motor runs smoothly and generates little heat. When the stepper pulse stops for more than 200ms, the driver current will automatically be reduced by half. The highest positioning accuracy can reach 25600 steps/turn.
