AMIS30532C5321G Datasheet, PDF (1/29 Pages) ON Semiconductor – Micro-Stepping Motor Driver

AMIS-30532
Micro-Stepping Motor
Driver
Introduction
The AMIS−30532 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−30532 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 is
using a proprietary PWM algorithm for reliable current control.
The AMIS−30532 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−30532 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.
Key Features
• Dual H−Bridge for 2−Phase Stepper Motors
• Programmable Peak−Current up to 1.6 A Continuous^† (3.0 A Short
Time) 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 5 V and 3.3 V Microcontrollers
• Integrated 5 V Regulator to Supply External Microcontroller
• Integrated Reset Function to Reset External Microcontroller
• Integrated Watchdog Function
• These Devices are Pb−Free and are RoHS Compliant*
http://onsemi.com
NQFP−32, 7x7
CASE 560AA
MARKING DIAGRAM
C532−001 = Specific Device Code
XXXX = Date Code
Y
= Assembly Location
ZZ
= Traceability Code
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 27 of this data sheet.
†Output current level may be limited by ambient temperature and heat sinking.
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2012
1
August, 2012 − Rev. 1
Publication Order Number:
AMIS−30532/D