NCV70522MN Datasheet, PDF (1/29 Pages) ON Semiconductor – Micro-Stepping Motor Driver

NCV70522MN
Micro-Stepping Motor Driver
Introduction
The NCV70522MN 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 NCV70522MN
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 NCV70522MN 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 NCV70522MN 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
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
• These are Pb−Free Devices*
www.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
NCV70522MN
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 Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2015
1
February, 2015 − Rev. 1
Publication Order Number:
NCV70522MN/D