AMIS-30621 LIN Micro-stepping Motor Driver
Data Sheet
1.0 General Description
The AMIS-30621 is a single-chip micro-stepping motor driver 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 AMIS-30621 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.
The chip is implemented in I
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T100 technology, enabling both high voltage analog circuitry and digital functionality on the same chip.
The AMIS-30621 is fully compatible with the automotive voltage requirements.
2.0 Product Features
Motor Driver
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Micro-stepping technology
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Sensorless step-loss detection
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Peak current up to 800mA
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Fixed frequency PWM current-control
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Automatic selection of fast and slow decay mode
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No external fly-back diodes required
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14V/24V compliant
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Motion qualification mode
Controller with RAM and OTP Memory
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Position controller
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Configurable speeds and acceleration
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Input to connect optional motion switch
LIN Interface
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Both physical and data-link layers (conform to LIN rev. 1.3)
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Field programmable node addresses
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Dynamically allocated identifiers
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Full diagnostics and status information
Protection
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Over-current protection
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Under-voltage management
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Open circuit detection
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High-temp warning and management
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Low-temp flag
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LIN bus short-circuit protection to supply and ground
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Lost LIN safe operation
Power Saving
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Power-down supply current < 100µA
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5V regulator with wake-up on LIN activity
EMI Compatibility
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LIN bus integrated slope control
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HV outputs with slope control
AMI Semiconductor
– Sept. 2007, Rev 1.5
www.amis.com
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AMI [ AMI SEMICONDUCTOR ]
