IMS IM2000 IM2000S Datasheet

FEATURES
• IM2000S Offers a Complete
Microstepping Control System
in a 64 Pin QFP Package
• Up to 10MHz Step Clock Rate
• Internal Sine/Cosine Generator
• PWM Phase Current Control
• Minimal External Components
• Automatic Current Reduction
• 14 Selectable Resolutions, in
Both Decimal and Binary
• Number of Microsteps
Per Step can be Changed
On-The-Fly Without Motor
Movement Interruption
• Up to 51,200 Steps/Rev
• Standalone or Buss Modes
• Single +5 VDC Power Supply
• Short Circuit and Over
Temperature Protection Inputs
• Fault Output
• On Full Step Output
• Anti-Resonance Circuitry
DESCRIPTION
The IM2000S is a high perfor-
mance microstepping controller
that incorporates a sine/cosine
signal generator, anti-resonance
circuitry, PWM current control
and much more in one monolithic
IC. The IM2000S combines hard-
ware intense functions together
with innovative features to provide
designers with a powerful yet simple
solution for their high volume OEM
products.
Never before has any motion prod-
uct integrated all the digital control
into one monolithic IC. This high
degree of integration can signifi-
cantly reduce design time as well
as driver size.
Beyond the integration of a com-
plete microstepping control system,
the IM2000S has unique features
that give designers unprecedented
control over motor movement.
These features include 14 select-
able resolutions (in both decimal
and binary) that can be changed at
any time without motor movement
interruption. There is no need to
reset the controller. This allows the
user to rapidly move long distances,
yet precisely position the motor at
the end of travel without the need or
expense of a complex controller.
Another valuable feature is an "On
Full Step" output which indicates
when the motor is at an electrical
full step. This output can be used
to reduce the overhead needed to
track position when making long
moves.
The development of proprietary cir-
cuits has minimized ripple current,
while maintaining a 20 KHz chop-
ping rate. This prevents additional
motor heating that is common with
drivers requiring higher chopping
rates. Now low inductance stepper
motors can be used to improve
high speed performance and peak
system efficiency.
The IM2000S needs only clock
and direction inputs to control the
motor and will interface directly to
discrete bridges or common mono-
lithic bridge ICs.
Designers can now place drivers
directly on their PC boards with all
the necessary control in an ultra
small 64 pin QFP package.
Size, price and time-to-market are
three crucial aspects in today's
competitive markets and the
IM2000S offers the ability to re-
duce all three.
PACKAGING INFORMATION
Dimensions in Inches (mm)
����������������
�������������
����������������
�������������
�� ��
��
�����
��
� ��
�����
��������������������
����� �������������������
����������
�����
���������������
���������������
��������������
��������������
Enlarged View Above
Actual Size
��
��
REV101805