AMIS-30623 Datasheet, PDF (1/67 Pages) AMI SEMICONDUCTOR – LIN Microstepping Motordriver

AMIS-30623 LIN Microstepping Motordriver
Data Sheet
1.0 General Description
The AMIS-30623 is a single-chip microstepping motordriver with position controller and control/diagnostic interface. It is ready to build
dedicated mechatronics solutions connected remotely with a LIN master.
The chip receives positioning instructions through the bus and subsequently drives the motor coils to the desired position. The on-chip
position controller is configurable (OTP or RAM) for different motor types, positioning ranges and parameters for speed, acceleration
and deceleration. The advanced motion qualification mode enables verification of the complete mechanical system in function of the
selected motion parameters. The AMIS-30623 acts as a slave on the LIN bus and the master can fetch specific status information like
actual position, error flags, etc. from each individual slave node.
An integrated sensorless step-loss detection prevents the positioner from loosing 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
the mechanical end-stops.
The chip is implemented in I2T100 technology, enabling both high voltage analog circuitry and digital functionality on the same chip.
The AMIS-30623 is fully compatible with the automotive voltage requirements.
2.0 Product Features
Motordriver
• Microstepping technology
• Sensorless step-loss detection
• Peak current up to 800mA
• Fixed frequency PWM current-control
• Automatic selection of fast and slow decay mode
• No external fly-back diodes required
• 14V/24V compliant
• Motion Qualification Mode
Controller with RAM and OTP memory
• Position controller
• Configurable speeds, and acceleration
• Input to connect optional motion switch
LIN interface
• Both physical and data-link layers (conform to LIN rev. 1.3)
• Field-programmable node addresses
• Dynamically allocated identifiers
• Full diagnostics and status information
Protection
• Over-current protection
• Under-voltage management
• Open circuit detection
• High-temp warning and management
• Low-temp flag
• LIN bus short-circuit protection to supply and ground
• Lost LIN safe operation
Power Saving
• Power-down supply current < 100µA
• 5V regulator with wake-up on LIN activity
EMI compatibility
• LIN bus integrated slope control
• HV outputs with slope control
AMI Semiconductor – June 2006, Rev 3.0
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