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PDF AMIS-30621 Data sheet ( Hoja de datos )
| Número de pieza | AMIS-30621 | |
| Descripción | LIN Microstepping Motordriver | |
| Fabricantes | AMI SEMICONDUCTOR | |
| Logotipo |  |
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AMIS-30621 LIN Microstepping Motordriver
Data Sheet
General Description
The AMIS-30621 is a member of a stepper motordriver
family with position controller and control/diagnostics
interface integrated in one single chip.
The family consists of two products:
• AMIS-30621 with LIN interface, ready to build dedicated
mechatronics solutions connected remotely with a LIN
master.
• AMIS-30622 with SERIAL interface, ready to act as
peripheral device next to a microcontroller.
Features
The chip receives high-level positioning instructions through
the interface and subsequently drives the motor coils until
the desired position is reached. The on-chip position
controller is configurable (OTP and Interface) for different
motor types, positioning ranges and parameters for speed,
acceleration, and deceleration.
The AMIS-30621 acts as a slave on the bus and the master
can fetch specific status information like actual position,
error flags, etc. from each individual slave node.
Motordriver
• Microstepping (1/2, 1/4, 1/8, 1/16)
• Low resonance & noise
• High resolution
• Programmable peak current up to 800mA
• 20kHz PWM current-control
• Automatic selection of fast & slow decay mode
• Internal fly-back FETs
• Fully integrated current sense
• 8V-29V supply voltage
• Automotive compliant
• Full diagnostics and status information
Controller with RAM and OTP Memory
• Position controller
• Configurable speeds, acceleration and deceleration
• Flexible hold-current
• Movement/position sensor-input
• Optional stall detection
www.DataSheet4U.com
Applications and Benefits
LIN Interface
• Physical - and data-link-layer (conform to LIN rev. 1.3)
• Dynamically allocated indentifiers
• Up to 128 node addresses
Protection
• Over-current protection
• Under-voltage management
• Over-voltage protection
• High-temp warning and shutdown
• Low-temp warning
• LIN bus short-circuit protection to supply & ground
Power Saving
• Power-down supply current <50µA
• 5V regulator with wake-up on LIN activity
EMI compatibility
• Power drivers with slope control
The AMIS-30621 is ideally suited for small positioning
applications. Target markets include: automotive (headlamp
alignment, HVAC, idle control, cruise), industrial equipment
(lighting, fluid control, labeling, process, XYZ tables) and
building automation (HVAC, surveillance, satellite dish
positioning). Suitable applications typically have multiple
axes or require mechatronic solutions with the driver chip
mounted directly on the motor.
The high abstraction level of the products’ command set
reduces the load of the processor on the master side.
Scaling of the application towards number of axes is
straight-forward: hardware - and software designs are
extended in a modular way, without severely effecting the
Ordering Information
demands on the master microcontroller. The bus structure
simplifies PCB track-layout and/or wiring architectures.
Microstepping operation removes the design trade-off
between minimal operation speed and avoiding the risk of
noise and step-loss due to resonance phenomena. The stall-
detection feature (optional) offers silent, yet accurate
position-calibrations during the referencing run and allows
semi-closed loop operation when approaching the
mechanical end-stops.
All these benefits result in reduced system-cost and time-
to-market and improved technical performance.
Part N° AMIS-30621
Package SOIC-20
Peak Current 800mA
Temp. Range -40°C…125°C
AMI Semiconductor - Rev. 1.4
www.amis.com
1
1 page  
AMIS-30621 LIN Microstepping Motordriver
Data Sheet
5.0 DC Parameters
The DC parameters are given for Vbb and temperature in their operating ranges.
Convention: currents flowing in the circuit are defined as positive.
Symbol
Pin(s)
Parameter
Motordriver
IMSmax Peak
Max current trough motor
coil in normal operation
IMSmax RMS
MOTXP Max RMS current trough
MOTXN coil in normal operation
IMSabs
MOTYP Absolute error on coil current
IMSrel
MOTYN Error on current ratio Icoilx / Icoily
RDSon
On resistance for each pin
(including bond wire)
IMSL
Pull down current
LIN Transmitter
Ibus_on
Dominant state, driver on
Ibus_off
Dominant state, driver off
Ibus_off
LIN Recessive state, driver off
Ibus_lim
Current limitation
Rslave
Pull-up resistance
LIN Receiver
Vbus_dom
Receiver dominant state
Vbus_rec
LIN Receiver recessive state
Vbus_hys
Receiver hysteresis
Thermal Warning & Shutdown
Ttw Thermal Warning
Ttsd (1)
Thermal shutdown
Tlow
Low temperature warning
Supply & Voltage Regulator
Vbb
VbbOTP
Nominal operating supply range
Supply voltage for OTP zapping
UV1 VBB Stop voltage high threshold
UV2 Stop voltage low threshold
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Total current consumption
Sleep mode current consumption
Vdd Internal regulated output (3)
IddStop
VddReset
IddLim
VDD
Digital current consumption
Digital supply reset level (4)
Current limitation
Switch Input and Hardwire Address Input
Rt_OFF
Switch OFF resistance (5)
Rt_ON
Switch ON resistance (5)
Vbb_sw
SWI
HW2
Vbb range for guaranteed
operation of SWI and HW2
Vmax_sw
Maximum voltage
Ilim_sw
Current limitation
Hardwired Address Inputs and Test Pin
Vlow
HW0
Input level high
Vhigh
HW1
Input level low
HWhyst
TST Hysteresis
Charge Pump
Vcp
Cbuffer
Cpump
VCP
CPP
CPN
Output voltage
External buffer capacitor
External pump capacitor
Notes
(1) No more than 100 cumulated hours in life time above Ttsd.
(2) To be confirmed by measurements.
(3) Pin VDD must not be used for any external supply.
AMI Semiconducto - Rev. 1.4r
www.amis.com
Test Conditions
Min Typ
Max
Unit
To be confirmed by
characterization
HZ mode
Vbus = 1.4V
Vbus = 0V
Vbus = Vbat
800
570
-10
-7
1
10
7
1
40
-1
50
20 30
20
200
47
0 0.4
0.6 1
0.05 0.2
138 145
152
Ttw+10
Ttw-155
mA
mA
%
%
Ω
mA
mA
mA
µA
mA
kΩ
Vbb
Vbb
Vbb
°C
°C
°C
Unloaded outputs
8V < Vbb < 18V
Cload = 1µF (+100nF cer.)
Vbb < UV2
Pin shorted to ground
6.5
9.0
8.8 9.4
8.1 8.5
10
4.75 5
2
18 V
10.0 V
9.8 V
8.9 V
mA
50 µA
5.25 V
mA
4.4 V
40 mA
Switch to Gnd or Vbat,
10
T < 1s
Short to Gnd or Vbat
6
30
kΩ
2 kΩ
29 V
40V V
mA
0.7
0.075
. Vdd
0.3 Vdd
Vdd
Vbb > 15V
Vbb > 8V
Vbb+10 Vbb+12.5
Vbb+5.8V
220
Vbb+15
470
V
V
nF
220 470 nF
(4) The RAM content will not be altered above this voltage.
(5) External resistance value seen from pin SWI or HW2,
including 1kW series resistor.
5
5 Page 
AMIS-30621 LIN Microstepping Motordriver
Data Sheet
9.2 Functions Description
This chapter describes the four most important blocks:
• Position controller
• Main control and register, OTP memory + ROM
• Motordriver
• LIN controller
9.2.1 Position Controller
9.2.1.1 Positioning and Motion Control
A positioning command will produce a motion as illustrated
below. A motion starts with an acceleration phase from
minimum velocity (Vmin) to maximum velocity (Vmax), and
ends with a symmetrical deceleration. This is defined by the
Control logic according to the position required by the
application and to the parameters programmed by the
application during configuration phase. The current in the
coils is also programmable.
Parameter
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Zero speed Hold Current
Maximum current
Acceleration and deceleration
Vmin
Vmax
Value
See § 8.5
See § 9.2.2.13 (Ihold)
See § 9.2.2.13 (Irun)
See § 8.4
See § 8.3
See § 8.2
AMI Semiconductor - Rev. 1.4
www.amis.com
11
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| Páginas | Total 43 Páginas | |
| PDF Descargar | [ Datasheet AMIS-30621.PDF ] | |
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