Stepper drives Servostep drives Controllers

ASICs
ASICs
Two phases stepper motor
advanced controller for drives
EEA1xx / EEA001
Main features:
• With the ASIC components can be build drives with:
Description
The ASIC series (Application Specific Integrated Circuit) has
been designed to resolve all calculation and control problems
for 2 phase stepper motor applications. Thanks to their
features it’s possible to build with these components a customized
Full Digital drive or to develop personal application
control boards.
√ high speed and high torque to the shaft
√ low resonance and low motor vibrations
√ extremely low mechanical noise
√ less motor heating
√ less electronics heating
The EEA1xx and EEA001 are complete Full Digital controllers
around which to build higher quality drives for two
phases step motors. They integrate functions of sequencer
and drive power stages control and protection against overcurrent,
over /under-voltage and over-temperature.
Interfaced to the standard external controls (Step, Direction)
or to Synchronous / Asynchronous serial interface the ASICs
ensure the highest motor control performance in terms of
rotation smoothness.
They can execute Micro-stepping movements at resolution
of up to 1/128 step with sinusoidal envelope (Maximum
step frequency: 2.56 MHz).
Besides they feature a motor rotation smoothing tuning
functionality to optimize the motor performance in every
application in terms of:
- high speed and torque at shaft;
- low heating of the drives;
- low vibrations;
- low heating of the motor;
- no resonances;
- very low mechanical noise;
- simplicity of the drive power stages hardware control.
The interface to the drive power stages is designed to offer
maximum compatibility with the most popular integrated
circuits for the driving of MOSFET and IGBT gates, also being
compatible with monolithic integrated circuits.
Thanks to the ASICs built in communication field bus (RS232,
SPI, I²C), the user can set step angle and phase current of the
motor, define type of movement and activate the automatic
current reduction at motor standstill and manage digital I/
Os, analogue input, and other operations of the drive.
Step (clk_u)
Direction (clk_d)
Enable
Fault
EEA1xx only
EEA1xx only
user settings
3
digital
inputs
1
digital
output
Opto
optional
Opto
optional
1
analog input
1
serial interface
Step angle
Motor
current
Smoothing
current
Functioning
mode
44