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AMI SEMICONDUCTOR

AMIS-30522 Datasheet Preview

AMIS-30522 Datasheet

Micro-stepping Motor Driver

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AMIS-30522 Micro-stepping Motor Driver
Data Sheet
1.0 Introduction
The AMIS-30522 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. It has an on-chip voltage regulator, reset-output and watchdog reset, able to supply peripheral
devices. AMIS-30522 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 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-30522 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-30522 is ideally suited for general-purpose stepper motor applications in the automotive, industrial, medical, and marine
environment. With the on-chip voltage regulator it further reduces the BOM for mechatronic stepper applications.
2.0 Key Features
Dual H-Bridge for 2-phase stepper motors
Programmable peak-current up to 1.6A 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 5V and 3.3V microcontrollers
Integrated 5V regulator to supply external microcontroller
www.DataShIneteet4gUra.cteomd reset function to reset external microcontroller
Integrated watchdog function
3.0 Ordering information
Table 1: Ordering Information
Part No.
AMIS-30522 ANA
Package
NQFP-32 (7 x 7mm)
Peak Current
1600mA
Temp. Range
-40°C…..125°C
Ordering Code
Tubes
0C522-001-XTD
Ordering Code
Tapes
0C522-001-XTP
AMI Semiconductor – June 2007, M-20684-001
www.amis.com
1




AMI SEMICONDUCTOR

AMIS-30522 Datasheet Preview

AMIS-30522 Datasheet

Micro-stepping Motor Driver

No Preview Available !

AMIS-30522 Micro-stepping Motor Driver
Data Sheet
4.0 Block Diagram
VDD CPN CPP VCP VBB
CLK
CS
DI
DO
NXT
DIR
SLA
POR/WD
CLR
ERR
SPI
PC20070322.2
5.0 Pin Description
Timebase
Vreg
Chargepump
Logic &
Registers
POR
OTP
Load
Angle
Temp.
Sense
EMC
P
TW
RM
A
N
I-sense
S
L
A
T
EMC
OP
RW
M
I-sense
Band-
gap
AMIS-30522
GND
Figure 1: Block Diagram AMIS-30522
Table 2: Pin List and Description
Name Pin Description
DO 31 SPI data output
VDD
32 Logic supply output (needs external decoupling capacitor)
GND
1 Ground, heat sink
wwwD.IDataSheet4U.com2
CLK 3
SPI data in
SPI clock input
NXT
4 Next micro-step input
DIR 5 Direction input
ERRB
6 Error output
SLA 7 Speed load angle output
CPN
9 Negative connection of charge pump capacitor
CPP
10 Positive connection of charge pump capacitor
VCP
11 Charge pump filter-capacitor
CLR
12 “Clear” = chip reset input
CSB
13 SPI chip select input
VBB
14 High voltage supply Input
MOTYP
15, 16 Negative end of phase Y coil output
GND
17, 18 Ground, heat sink
MOTYN
19, 20 Positive end of phase Y coil output
MOTXN
21, 22 Positive end of phase X coil output
GND
23, 24 Ground, heat sink
MOTXP
25, 26 Negative end of phase X coil output
VBB
27 High voltage supply input
/
8, 30
No function (to be left open in normal operation)
PORB/WD
28
Power-on-reset (POR)and watchdog reset output
TSTO
29 Test pin input (to be tied to ground in normal operation)
MOTXP
MOTXN
MOTYP
MOTYN
AMI Semiconductor – June 2007, M-20684-001
www.amis.com
2


Part Number AMIS-30522
Description Micro-stepping Motor Driver
Maker AMI SEMICONDUCTOR
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AMIS-30522 Datasheet PDF






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