AMIS-30422: Stepper motor driver/controller for external FETs

Description: The AMIS-30422 is a micro-stepping stepper motor b...
  • The AMIS-30422 is a micro-stepping stepper motor bridge controller for large current range bipolar applications. The chip interfaces via a SPI interface with an external controller in order to control two external power NMOS H-bridges. It has an on-chip voltage regulator, current sensing, self adapting PWM controller and pre-driver with smart slope control switching allowing the part to be EMC compliant with industrial and automotive applications. It uses a proprietary PWM algorithm for reliable current control.
  • Features
  • Dual H-bridge pre-drivers for two phase stepper motors
  • Programmable current via SPI
  • On-chip current translator
  • SPI interface
  • Speed and load angle output
  • 9 step modes from full step up to 128 microsteps
  • Current sense via two external sense resistors
  • PWM current control with automatic selection of fast and slow decay
  • Low EMC PWM with selectable voltage slopes
  • Full output protection and diagnosis
  • Thermal warning and shutdown
  • Compatible with 3.3 V microcontrollers
  • Integrated 3.3 V regulator to supply external microcontroller
  • Integrated reset function to reset external microcontroller
  • Integrated watchdog function
  • Applications
  • Motor control
  • End Products
  • HVAC
  • Industrial control systems
  • Technical Documentation & Design Resources
    Evaluation/Development Tool Information
    Availability and Samples
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Stepper motor driver/controller for external FETs
  • Package Type: QFN-48
  • Package Case Outline: 485AJ
  • MSL: 3
  • Container Type: REEL
  • Container Qty: 2500
  • Specifications
  • VM Min (V):
  • VM Max (V): 40 
  • VCC Min (V):
  • VCC Max (V): 3.6 
  • IO Max (A): 15 
  • IO Peak Max (A): 20 
  • Step Resolution: 1/128 
  • Control Type: SPI 
  • Current Sense: External Resistor 
  • Fault Detection: Thermal 
  • Package Type: QFN-48 
  • ON Semiconductor Full Web Site