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AMIS-30522

ON Semiconductor
Part Number AMIS-30522
Manufacturer ON Semiconductor
Description Micro-Stepping Motor Driver
Published Nov 4, 2009
Detailed Description AMIS-30522, NCV70522 Micro-Stepping Motor Driver Introduction The AMIS−30522/NCV70522 is a micro−stepping stepper motor...
Datasheet PDF File AMIS-30522 PDF File

AMIS-30522
AMIS-30522

Overview
AMIS-30522, NCV70522 Micro-Stepping Motor Driver Introduction The AMIS−30522/NCV70522 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.
The AMIS−30522/NCV70522 contains a current−translation table.
It 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 is using a proprietary PWM algorithm for reliable current control.
The AMIS−30522/NCV70522 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 522 is ideally suited for general purpose stepper motor applications in the automotive, industrial, medical and marine environment.
The AMIS−30522 is intended for use in industrial applications.
The NCV70522 version is qualified for use in automotive applications.
Features • Dual H−Bridge for 2 Phase Stepper Motors • Programmable Peak−Current up to 1.
2 A Continuous (1.
5 A Short Time), 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 Shutdown • Digital IO’s Compatible with 5 V and 3.
3 V Microcontrollers • Integrated 5 V Voltage Regulator to Supply an External Microcontroller • Integrated Reset Function to Reset External Microcontroller • Integrated Watchdog Function • NCV Prefix for Automotive and Other Applications Requ...


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