AMIS-30512中文资料Microstepping motor driver数据手册ONSEMI规格书

描述 Description

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.

特性 Features

• 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

应用 Application

• 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