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AMIS-30512: Microstepping motor driver

Datasheet: Microstepping Motor Driver
Rev. 1 (414.0kB)
Product Overview
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The AMIS-30512 is a micro-stepping stepper motor driver for bipolar stepper motors. The chip is connected through I/O pins and an SPI interface with an external microcontroller. It has an on-chip voltage regulator, reset-output and watchdog reset, able to supply peripheral devices. The AMIS-30512 contains a current-translation table and 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 uses a proprietary PWM algorithm for reliable current control.
The AMIS-30512 is implemented in I2T100 technology, enabling both high voltage analog circuitry and digital functionality on the same chip. The chip is fully compatible with the automotive voltage requirements.
The AMIS-30512 is ideally suited for general purpose stepper motor applications in the automotive, industrial, medical, and marine environment.
  • Dual H-bridge for 2-phase stepper motors
  • Programmable peak-current up to 800 mA using a 5-bit current DAC
  • On-chip current translator
  • SPI interface
  • Speed and load angle output
  • Seven step modes from full-step up to 32 micro-steps
  • Fully integrated current-sense
  • PWM current control with automatic selection of fast and slow decay
  • Low EMC PWM with selectable voltage slopes
  • Active fly-back diodes
  • Full output protection and diagnosis
  • Thermal warning and shutdown
  • Compatible with 3.3 V microcontrollers, 5.0 V tolerant inputs
  • Integrated 5.0 V regulator to supply external microcontroller
  • Integrated reset function to reset external microcontroller
  • Integrated watchdog function
Applications   End Products
  • Pan, tilt, zoom motor control
  • Integrated, local control mounted to motors
  • Flaps and valves in building and process
  • Positioning
  • Security cameras
  • Smart motors (integrated drivers)
  • Sewing machines
  • Building automation
  • Pick-and-place, office equipment
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
AMIS305XXGEVK Consult Sales Office
Industrial Stepper Motor Driver Evaluation Kit 305XX Family
Budgetary Price/Unit
Case Outline
AMIS30512C5122RG Lifetime
Halide free
AMIS-30512 SOIC-24 751AW 2 260 Tape and Reel 1500  
Market Leadtime (weeks) : Contact Factory
Case Outlines
AMIS-30512: Microstepping motor driver
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