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AMIS30511C5112RG

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© Semiconductor Components Industries, LLC, 2008
September, 2008 − Rev. 1
1 Publication Order Number:
AMIS−30511/D
AMIS-30511
Micro-Stepping Motor Driver
Introduction
The AMIS−30511 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 AMIS−30511
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, step loss detection, and control loops based
on load−angle to adjust torque and speed. It is using a proprietary
PWM algorithm for reliable current control.
The AMIS−30511 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 AMIS−30511 is ideally suited for general−purpose stepper
motor applications in the automotive, industrial, medical, and marine
environment.
Key Features
• Dual H−Bridge for 2−phase Stepper Motors
• Programmable Peak−current up to 800 mA Using a 5−bit Current
DAC
• On−chip Current Translator
• SPI Interface
• Speed and Load Angle Output
• Seven 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
• Compatible with 3.3 V Microcontrollers, 5 V Tolerant Inputs
• −40°C to 125°C Temperature Range at 800 mA Peak Current
http://onsemi.com
Device Package Shipping
ORDERING INFORMATION
AMIS30511 SOIC 24 Tape & Reel
PIN ASSIGNMENT
(Top View)
TSTO
MOTXP
VBB
GND
MOTXN
MOTYN
GND
MOTYP
VBB
CS
CLR
DO
DI
GND
CLK
NXT
DIR
ERR
SLA
CPN
CPP
VCP
VDD
AMIS30511
AMIS−30511
http://onsemi.com
2
Table of Contents
Page
Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key Features 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ordering Information 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Block Diagram 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin List and Descriptions 3. . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Specifications 3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical Application Schematic 8. . . . . . . . . . . . . . . . . . . . . . .
Functional Description 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPI Interface 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Soldering Information 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package Outline 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1. Block Diagram
Temp.
Sense
SPI
OTP
Timebase
POR
DI
DO
CLK
NXT
SLA
DIR
Band−
gap
Load
Angle
AMIS−30511
Logic &
Registers
Chargepump
T
R
A
N
S
L
A
T
O
R
CLR
VBB
P
W
M
I−sense
EMC
P
W
M
EMC
VDD
GND
MOTXP
MOTXN
MOTYP
MOTYN
CPN CPP VCP
TST0
ERR
CS
I−sense
AMIS−30511
http://onsemi.com
3
Table 1. Pin List and Descriptions
Name Pin Description
DO 1 SPI data output (open drain)
VDD 2 Logic Supply Input (needs external decoupling capacitor)
GND 3 Ground
DI 4 SPI data in
CLK 5 SPI clock input
NXT 6 Next micro−step input
DIR 7 Direction input
ERR 8 Error Output (open drain)
SLA 9 Speed Load Angle Output
CPN 10 Negative connection of charge pump capacitor
CPP 11 Positive connection of charge pump capacitor
VCP 12 Charge−pump filter−capacitor
CLR 13 “Clear” = Chip Reset input
CS 14 SPI chip select input
VBB 15 High Voltage Supply Input
MOTYP 16 Negative end of phase Y coil output
GND 17 Ground
MOTYN 18 Positive end of phase Y coil output
MOTXN 19 Positive end of phase X coil output
GND 20 Ground
MOTXP 21 Negative end of phase X coil output
VBB 22 High Voltage Supply Input
/ 23 No Function (to be left open in normal operation)
TST0 24 Test pin (to be tied to ground in normal operation) input
Table 2. Absolute Maximum Ratings
Symbol Parameter Min. Max. Units
V
BB
Analog DC supply voltage (Note 1) −0.3 +40 V
V
DD
Logic supply voltage −0.3 +7.0 V
Tstrg Storage temperature −55 +160 °C
Tamb Ambient temperature under bias −50 +150 °C
V
ESD
Electrostatic discharges on component level (Note 2) −2 +2 kV
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.
1. For limited time < 0.5 s.
2. Human body model (100 pF via 1.5 kW, according to JEDEC EIA−JESD22−A114−B).
Table 3. Recommended Operating Conditions
Symbol Parameter Min. Max. Units
V
BB
Analog DC supply +6 +30 V
V
DD
Logic supply voltage 4.75 5.25 V
T
a
Ambient temperature V
BB
≤ +18 −40 +125 °C
T
a
Ambient temperature V
BB
≤ +30 −40 +85 °C
T
j
Junction temperature +160 °C
NOTE: Operating ranges define the limits for functional operation and parametric characteristics of the device. Note that the functionality
of the chip outside these operating ranges is not guaranteed. Operating outside the recommended operating ranges for extended
periods of time may affect device reliability.
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AMIS30511C5112RG

Mfr. #:
Buy AMIS30511C5112RG
Manufacturer:
ON Semiconductor
Description:
Motor / Motion / Ignition Controllers & Drivers 800MA STEPPER DRIVER
Lifecycle:
New from this manufacturer.
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