NCV70522DQ Datasheet, PDF (1/27 Pages) ON Semiconductor – Micro-Stepping Motor Driver

NCV70522DQ
Micro-Stepping Motor Driver
Introduction
The NCV70522DQ 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 NCV70522DQ
features an internal current−translation table: it takes the next
micro−step depending on the clock signal on the stepping input pin
(NXT) and the status of the direction register or input pin (DIR). A
reliable current control is achieved using an integrated proprietary
PWM algorithm.
The NCV70522DQ includes a so−called “Speed and Load Angle”
(SLA) output, allowing the creation of stall detection algorithms and
control loops to adjust torque and speed based on the motor’s back
electromotive force (BEMF).
The NCV70522DQ is implemented in I2T100 technology, enabling
both high voltage analog circuitry and digital functionality on the
same chip. The device is fully compatible with automotive voltage and
temperature requirements and suited to general purpose stepper motor
applications in the automotive, industrial, medical and marine
domains.
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 Requiring Site
and Control Changes
• These are Pb−Free Devices*
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
www.onsemi.com
SSOP36 EP
DQ SUFFIX
CASE 940AB
MARKING DIAGRAM
NCV70522−4
AWLYYWWG
NCV70522 = Specific Device Code
A
= Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G
= Pb−Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 27 of this data sheet.
© Semiconductor Components Industries, LLC, 2015
1
February, 2015 − Rev. 2
Publication Order Number:
NCV70522DQ/D