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AMIS-30521: Stepper Motor Driver with Comprehensive Diagnostic Feedback and SLA Output

Datasheet: Micro-stepping Motor Driver
Rev. 3 (314kB)
Product Overview
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The NCV70521 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. The NCV70521 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 NCV70521 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 NCV70521 is ideally suited for general purpose stepper motor applications in the automotive environment.
Features
 
  • Dual H-Bridge for 2 phase stepper motors
  • Programmable peak-current up to 1.5 A using a 5-bit current DAC
  • On-chip current translator
  • SPI interface
  • Speed and load-angle output
  • 7 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 shut-down
  • Compatible with 5V and 3.3V microcontrollers
End Products
  • Automotive headlight position
  • Flap/valve control in engine management
  • Folding displays
  • HVAC and LPG expansion valves
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
AMIS305XXGEVK Consult Sales Office
Pb-free
Industrial Stepper Motor Driver Evaluation Kit 305XX Family
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
AMIS30521C5212RG Lifetime
Pb-free
Halide free
AMIS-30521 NQFP-32 560AA 3 260 Tape and Reel 2500 $2.5066
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14) : >1K
ON Semiconductor   (2020-09-02) : 2,500
Case Outlines
560AA   
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