ON Semiconductor NCV70624DW010R2G

Description
The AMIS-30624/NCV70624 is a single-chip micro-stepping motor driver with a position controller and control/diagnostic interface. It is designed for intelligent peripheral systems where up to 32 drivers can be connected to one FC master, reducing system complexity.
The chip receives positioning instructions through the bus and drives the stator coils to move the two-phase stepper motor to the desired position. The on-chip position controller is configurable for different motor types, positioning ranges, and parameters for speed, acceleration, and deceleration. Micro-stepping allows for silent motor operation and increased positioning resolution.
The advanced motion qualification mode enables verification of the complete mechanical system based on the selected motion parameters. The AMIS-30624/NCV70624 can be easily connected to an I²C bus, where the I²C master can fetch specific status information like actual position and error flags from each individual slave node.
An integrated sensorless step-loss detection prevents the positioner from losing steps and stops the motor when running into stall. This enables silent, yet accurate position calibrations during a referencing run and allows semi-closed loop operation when approaching mechanical end-stops.

Features
Motor Driver:
Micro-stepping technology
Sensorless step-loss detection
Peak current up to 800 mA
Fixed frequency PWM current-control
Selectable PWM frequency
Automatic selection of fast and slow decay mode
No external fly-back diodes required
14 V/24 V compliant
Motion qualification mode
Controller with RAM and OTP Memory:
Position controller
Configurable speeds and acceleration
Input to connect optional motion switch
PC Interface:
Bi-directional 2-wire bus for Inter IC Control
Field programmable node addresses
Full diagnostics and status information
Protection:
Overcurrent protection
Undervoltage management
Open-circuit detection
High temperature warning and management
Low temperature flag
EMI Compatibility:
High voltage outputs with slope control
Patents:
US 7,271,993
US 7,288,956

Applications
Intelligent peripheral systems
Motion control systems
Industrial automation
Robotics
Medical devices
Automotive applications