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NCV70522 fiches techniques PDF

ON Semiconductor - Micro-Stepping Motor Driver

Numéro de référence NCV70522
Description Micro-Stepping Motor Driver
Fabricant ON Semiconductor 
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NCV70522 fiche technique
AMIS-30522, NCV70522
Micro-Stepping Motor Driver
Introduction
The AMIS30522/NCV70522 is a microstepping stepper motor
driver for bipolar stepper motors. The chip is connected through I/O
pins and a SPI interface with an external microcontroller. The
AMIS30522/NCV70522 contains a currenttranslation table. It takes
the next microstep 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 socalled “Speed and Load Angle” output. This allows
the creation of stall detection algorithms and control loops based on
loadangle to adjust torque and speed. It is using a proprietary PWM
algorithm for reliable current control.
The AMIS30522/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 AMIS30522 is intended for use in industrial
applications. The NCV70522 version is qualified for use in
automotive applications.
Features
Dual HBridge for 2 Phase Stepper Motors
Programmable PeakCurrent up to 1.2 A Continuous (1.5 A Short
Time), Using a 5Bit Current DAC
OnChip Current Translator
SPI Interface
Speed and LoadAngle Output
7 Step Modes from FullStep up to 32 MicroSteps
Fully Integrated CurrentSense
PWM Current Control with Automatic Selection of Fast and Slow
Decay
Low EMC PWM with Selectable Voltage Slopes
Active Flyback 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 Requiring Site
and Control Changes
These are PbFree Devices*
http://onsemi.com
PINOUT
32 31 30 29 28 27 26 25
GND 1
DI 2
CLK 3
NXT 4
DIR 5
ERR 6
SLA 7
8
AMIS30522/
NCV70522
24 GND
23 GND
22 MOTXN
21 MOTXN
20 MOTYN
19 MOTYN
18 GND
17 GND
9 10 11 12 13 14 15 16
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 27 of this data sheet.
*For additional information on our PbFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2009
December, 2009 Rev. 0
www.DataSheet.in
1
Publication Order Number:
AMIS30522/D

PagesPages 29
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