¡El AMIS−30522/NCV70522 is a micro−stepping stepper motor driver for bipolar stepper motors. ¡El chip is connected through I/O pins and a SPI interface with an external microcontroller. The AMIS−30522/NCV70522 contains a current−translation table. It takes the next micro−step depending on the clock signal on the “NXT” input pin and the status of the “DIR” (= direction) register or input pin. The chip provides a so−called “Speed and Load Angle” output. This allows the creation of stall detection algorithms and control loops based on load−angle to adjust torque and speed. It is using a proprietary PWM algorithm for reliable current control. ¡El AMIS−30522/NCV70522 is implemented in I2T100 technology, enabling both high voltage analog circuitry and digital functionality on the same chip. ¡El chip is fully compatible with the automotive voltage requirements. ¡El 522 is ideally suited for general purpose stepper motor applications in the automotive, industrial, medical and marine environment. ¡El AMIS−30522 is intended for use in industrial applications. ¡El NCV70522 version is qualified for use in automotive applications.