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AMIS.30422/D

Description
STEPPER MOTOR CONTROLLER
Categorysemiconductor    Analog mixed-signal IC   
File Size505KB,45 Pages
ManufacturerON Semiconductor
Websitehttp://www.onsemi.cn
Download Datasheet Parametric Compare View All

AMIS.30422/D Overview

STEPPER MOTOR CONTROLLER

AMIS.30422/D Parametric

Parameter NameAttribute value
stateACTIVE
Analog IC other typesSTEPPER MOTOR CONTROLLER
AMIS-30422
Micro-Stepping Stepper
Motor Bridge Controller
Introduction
The AMIS−30422 is a micro-stepping stepper motor bridge
controller for large current range bipolar applications. The chip
interfaces via a SPI interface with an external controller in order to
control two external power NMOS H−bridges. It has an on-chip
voltage regulator, current sensing, self adapting PWM controller and
pre-driver with smart slope control switching allowing the part to be
EMC compliant with industrial and automotive applications. It uses a
proprietary PWM algorithm for reliable current control.
The AMIS−30422 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.
The AMIS−30422 is implemented in a mature technology, enabling
fast high voltage analog circuitry and multiple digital functionalities
on the same chip. The chip is fully compatible with automotive
voltage requirements.
The AMIS−30422 is easy to use and ideally suited for large current
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
http://onsemi.com
1 48
QFN48
CASE 485AJ
MARKING DIAGRAM
1
AMIS30422
0C422−001
AWLYYWW
Dual H−Bridge Pre−Drivers for 2−Phase Stepper Motors
Programmable Current via SPI
On−chip Current Translator
SPI Interface
Speed and Load Angle Output
9 Step Modes from Full Step up to 128 Micro−Steps
Current−Sense via Two External Sense Resistors
PWM Current Control with Automatic Selection of Fast and Slow
Decay
Low EMC PWM with Selectable Voltage Slopes
Full Output Protection and Diagnosis
Thermal Warning and Shutdown
Compatible with 3.3 V Microcontrollers
Integrated 3.3 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
A
WL
YY
WW
G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 44 of this data sheet.
©
Semiconductor Components Industries, LLC, 2013
March, 2013
Rev. 0
1
Publication Order Number:
AMIS−30422/D

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