DESCRIPTION

· The NCV70627 is a single-chip micro-stepping motor driver with a position controller and control/diagnostic interface.

· It is designed for dedicated mechatronics solutions, connecting remotely with a LIN master.

· The chip receives positioning instructions via the LIN bus and drives motor coils to the desired position.

· It features an on-chip position controller configurable via OTP or RAM for different motor types, positioning ranges, and speed parameters.

· The device supports sensor-less step-loss detection, preventing step loss and stopping the motor during stall conditions.

· It is implemented in I3T50 technology, combining high-voltage analog circuitry and digital functionality, making it suitable for automotive applications with fluctuating battery supplies.

FEATURES

· Micro-stepping technology with peak current up to 800 mA and low-temperature boost current up to 1100 mA.

· Programmable current stabilization phase and fixed-frequency PWM current control.

· Automatic selection of fast and slow decay modes, eliminating the need for external fly-back diodes.

· Position controller with configurable speeds and acceleration, and an input for optional motion switches.

· LIN interface compliant with LIN rev. 2.0 physical layer and LIN rev. 1.3 data-link layer.

· Protection features include overcurrent protection, open-circuit detection, high-temperature warning, and LIN bus short-circuit protection.

· Power-saving features with a power-down supply current of less than 150 µA and a 3.3 V regulator with wake-up on LIN activity.

· EMI compatibility with integrated slope control on LIN bus and HV outputs.

APPLICATIONS

· Automotive systems requiring precise motor control and position management.

· Mechatronic solutions with remote connectivity via LIN bus.

· Applications with fluctuating battery supplies, leveraging the device’s robust voltage management.

· Systems requiring silent and accurate position calibration, such as referencing runs and semi-closed loop operations.