Stepper motors are used in office automation, industrial equipment, and required to have low heat generation, low vibration, and low EMI. Nuvoton stepper motor drivers can control bipolar two phase stepper motors with a single chip. Mixed-decay automatic control which is one of our strengths in current control technology, helps to constantly detects and attenuates excessive current that does not contribute to torque., This function help to easily realize low heat generation and low vibration drive. In addition, the original power drive control suppresses noise, when a large output current is needed, contributing to low EMI of the motor.