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AMIS-30522: Stepper Motor Driver with Comprehensive Diagnostic Feedback and SLA Output

Datasheet: Micro-Stepping Motor Driver
Rev. 1 (336.0kB)
Product Overview
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The AMIS-30522 is a micro-stepping stepper motor driver for bipolar stepper motors. The chip is connected through I/O pins and a SPI interface with an external microcontroller. It has an on-chip voltage regulator, reset-output and watchdog reset, able to supply peripheral devices. AMIS-30522 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 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-30522 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-30522 is ideally suited for general-purpose stepper motor applications in the automotive, industrial, medical, and marine environment. With the on-chip voltage regulator it further reduces the BOM for mechatronic stepper applications.
Features   Benefits
  • Integrated 5V regulator
  • Supplies external microcontroller
  • Integrated reset function
  • Reset external microcontroller
  • 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 5V and 3.3V microcontrollers
  • Dual H-Bridge for 2-phase stepper motors
  • Programmable peak-current up to 1.6A using a 5-bit current DAC
  • Integrated watchdog function
  • Flap/valve control in climate control facilities
End Products
  • Intelligent positioning and dynamic motion of surveillance cameras and spotlights
  • Dose pumps
  • Vending machines
  • Pick-and-place machines
  • Automotive headlight position
  • Dynamic motion of weaving and sewing equipment
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
AM305222R1DBGEVB Consult Sales Office
Daughter Board SPI Stepper Driver NQFP Evaluation Board
AMIS305XXGEVK Consult Sales Office
Industrial Stepper Motor Driver Evaluation Kit 305XX Family
Budgetary Price/Unit
Case Outline
AMIS30522C5222RG Lifetime
Halide free
AMIS-30522 NQFP-32 560AA 3 260 Tape and Reel 2500  
Market Leadtime (weeks) : Contact Factory
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