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ON Semiconductor |
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
September, 2009 − Rev. 5
1
Publication Order Number:
AMIS−30624/D
AMIS−30624, NCV70624
APPLICATIONS
The AMIS−30624/NCV70624 is ideally suited for small
positioning applications. Target markets include:
automotive (headlamp alignment, HVAC, idle control,
cruise control), industrial equipment (lighting, fluid control,
labeling, process control, XYZ tables, robots) and building
automation (HVAC, surveillance, satellite dish, renewable
energy systems). Suitable applications typically have
multiple axes or require mechatronic solutions with the
driver chip mounted directly on the motor.
Table 1. ORDERING INFORMATION
Part No.
Peak Current
End Market/Version
Package*
Shipping†
AMIS30624C6244G
800 mA
SOIC−20
(Pb−Free)
Tube/Tray
AMIS30624C6244RG
AMIS30624C6245G
800 mA
800 mA
Industrial
High Voltage Version
SOIC−20
(Pb−Free)
NQFP−32 (7 x 7 mm)
(Pb−Free)
Tape & Reel
Tube/Tray
AMIS30624C6245RG
800 mA
NQFP−32 (7 x 7 mm)
(Pb−Free)
Tape & Reel
NCV70624DW010G
NCV70624DW010R2G
800 mA
800 mA
Automotive
High Temperature
Version
SOIC−20
(Pb−Free)
SOIC−20
(Pb−Free)
Tube/Tray
Tape & Reel
*For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specification Brochure, BRD8011/D.
QUICK REFERENCE DATA
Table 2. ABSOLUTE MAXIMUM RATINGS
Parameter
Min Max Unit
VBB, VHW, VSWI
TJ
Tst
Vesd (Note 4)
Supply voltage, hardwired address and SWI pins
Junction temperature range (Note 3)
Storage temperature
Human Body Model (HBM) Electrostatic discharge voltage on pins
Machine Model (MM) Electrostatic discharge voltage on pins
−0.3
−50
−55
−2
−200
+40 (Note 2)
+175
+160
+2
+200
V
C
C
kV
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
2. For limited time: VBB < 0.5 s, SWI and HW pins <1.0 s.
3. The circuit functionality is not guaranteed.
4. HBM according to AEC−Q100: EIA−JESD22−A114−B (100 pF via 1.5 kW) and MM according to AEC−Q100: EIA−JESD22−A115−A.
Table 3. OPERATING RANGES
Parameter
VBB Supply voltage
TJ Operating temperature range
Min
+6.5
−40
Max
+29
+165
Unit
V
C
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