AMIS-30624_13 Datasheet, PDF (1/52 Pages) ON Semiconductor – I2C Micro-stepping Motor Driver

AMIS-30624, NCV70624
I²C Micro-stepping Motor
Driver
INTRODUCTION
The AMIS−30624/NCV70624 is a single−chip micro−stepping
motor driver with a position controller and control/diagnostic
interface. It is ready to build intelligent peripheral systems where up to
32 drivers can be connected to one I²C master. This significantly
reduces system complexity.
The chip receives positioning instructions through the bus and
subsequently drives the stator coils so the two−phase stepper motor
moves to the desired position. The on−chip position controller is
configurable (OTP or RAM) for different motor types, positioning
ranges and parameters for speed, acceleration and deceleration.
Micro−stepping allows silent motor operation and increased
positioning resolution. The advanced motion qualification mode
enables verification of the complete mechanical system in function of
the selected motion parameters. The AMIS−30624/NCV70624 can
easily be connected to an I²C bus where the I²C master can fetch
specific status information like actual position, error flags, etc. from
each individual slave node.
An integrated sensorless step−loss detection prevents the positioner
from loosing steps and stops the motor when running into stall. This
enables silent, yet accurate position calibrations during a referencing
run and allows semi−closed loop operation when approaching the
mechanical end−stops.
The chip is implemented in I2T100 technology, enabling both high
voltage analog circuitry and digital functionality on the same chip.
The NCV70624 is fully compatible with the automotive voltage
requirements.
http://onsemi.com
SOIC−20
4 or DW010 SUFFIX
CASE 751AQ
NQFP−32
5 SUFFIX
CASE 560AA
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
PRODUCT FEATURES
Motor Driver
 Micro−Stepping Technology
 Sensorless Step−Loss Detection
 Peak Current Up to 800 mA
 Fixed Frequency PWM Current−Control
 Selectable PWM Frequency
 Automatic Selection of Fast and Slow Decay Mode
 No external Fly−back Diodes Required
 14 V/24 V Compliant
 Motion Qualification Mode (Note 1)
Controller with RAM and OTP Memory
 Position Controller
 Configurable Speeds and Acceleration
 Input to Connect Optional Motion Switch
I²C Interface
 Bi−Directional 2−Wire Bus for Inter IC Control
 Field Programmable Node Addresses
 Full Diagnostics and Status Information
Protection
 Overcurrent Protection
 Undervoltage Management
 Open−circuit Detection
 High Temperature Warning and Management
 Low Temperature Flag
EMI Compatibility
 High Voltage Outputs with Slope Control
Patents
 US 7,271,993
 US 7,288,956
 This is a Pb−Free Device
 NCV Prefix for Automotive and Other Applications
Requiring Site and Control Changes
1. Not applicable for “Product Versions NCV70624DW010G, NCV70624DW010R2G”
 Semiconductor Components Industries, LLC, 2009
1
September, 2009 − Rev. 5
Publication Order Number:
AMIS−30624/D