GS-D200
GS-D200S
2/2.5A BIPOLAR STEPPER MOTOR DRIVE MODULES
FEATURES
Wide supply voltage range
Full/Half step drive capability
Logic signals TTL/CMOS compatible
Programmable motor phase current and chopper
frequency
Selectable Slow/Fast current decay
Synchronization for multimotor applications
Remote shut-down
Home position indication
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DESCRIPTION
The
GS-D200
and the
GS-D200S
are drive mod-
ules that directly interface a microprocessor to a two
phase, bipolar, permanent magnet stepper motors.
The phase current is chopper controlled, and the
internal phase sequence generation reduces the
burden of the controller and it simplifies software
development.
The
GS-D200
uses bipolar power outputs while the
GS-D200S
has powermos outputs to significantly
reduce both commutation and conduction losses.
A further benefit offered by the
GS-D200S
is the
complete protection of the outputs against any type
of shorts.
SELECTION CHART
Type
Ordering
Number
Phase
Current
(A)
Voltage
Drop
(V)
Supply
Voltage
(V)
GS-D200
1.0 nom.
(0.5 to 2.0)
4.1 max.
10 to 46
5.0±5%
GS-D200S
2.0 nom.
(0.5 to 2.5)
2.5 max.
12 to 40
5.0±5%
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June 1994
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GS-D200/GS-D200S
ABSOLUTE MAXIMUM RATINGS
Symbol
Vs
Vss
Tstg
Tcop
DC Supply Voltage (pin 18)
DC Logic Supply Voltage (pin 12)
Storage Temperature Range
Operating Case Temperature Range
Parameter
GS-D200
GS-D200S
Value
48
42
7
– 40 to +105
– 20 to +85
Unit
V
V
V
°C
°C
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C and V
S
=24V unless otherwise specified)
Value
Symbol
Is
Iss
Vi
Parameter
Quiescent Supply Current
Quiescent Logic Supply Current
Test Conditions
Min
Pin 18
Pin 12 Vss=5V
Typ
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Input Voltage
Pin
3,4,6,7,10,11
Pin
3,4,6,7,10,11
Low
High
2
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20
0.8
Vss
0.6
10
Max
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Unit
mA
mA
V
V
mA
µA
V
Ii
Input Current
Vi=Low
Vi=High
Vsat
Pin
Source/Sink Saturation Voltage(GS-D200) 14,15,16,17
Source/Sink Saturation Voltage(GS-D200S)
Current Limit Intervention
Io=1A
1.8
Vsat
IoL
fc
Pin
14,15,16,17
GS-D200S
Io=2A
1.8
V
5
A
Chopper Frequency
Stepckl Width
17
kHz
µs
µs
tclk
ts
Pin 6 (See fig. 1)
"
0.5
1
Set Up Time
th
tr
Hold Time
"
"
1
1
µs
Reset Width
µs
trclk
Reset to Clock Set Up Time
"
1
µs
Figure 1: Signals Timing
2/17
GS-D200/GS-D200S
Figure 2: GS-D200 and GS-D200S Block Diagram
s)
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GS-D200/GS-D200S
Figure 3: GS-D Modules Typical Application
s)
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Figure 4: GS-D200 and GS-D200S Connection Diagram (Top view)
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GS-D200/GS-D200S
PIN DESCRIPTION
Pin
1
2
3
4
5
6
7
8
Function
GND1
Sync
Reset
Half/Full
Home
Stepclk
CW/CCW
Oscillator
Description
Return path for the logic signals and 5V supply.
Chopper oscillator output.
Several modules can be synchronized by connecting together all Sync pins. This pin can
be used as the input for an external clock source.
Asynchronous reset input. An active low pulse on this input preset the internal logic to the
initial state (ABCD=0101).
Half/Full step selection input.
When high or unconnected the half step operation is selected.
When high, this output indicates that the internal counter is in its initial state (ABCD=0101).
This signal may be used in conjunction with a mechanical switch to ground or with open
collector output of an optical detector to be used as a system home detector.
The motor is moved one step on the rising edge of this signal.
s)
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The chopper oscillator timing, internally fixed at 17kHz, can be modified by connecting a
resistor between this pin and Vss or a capacitor between this pin and Gnd1.
The oscillator input must be grounded when the unit is externally synchronized.
9
Ioset
Phase current setting input. A resistor connected between this pin and Gnd1 or Vss,
allows the factory setted phase current value (1A for GS-D200 and 2A for GS-D200S) to
be changed.
Logic input that allows the phase current decay mode selection. When high or
unconnected the slow decay is selected.
10
11
Control
Enable
Vss
12
5V supply input. Maximum voltage must not exceed 7V.
13
14
15
16
17
18
GND2
D
C
B
A
Return path for the power section.
D output.
C output.
B output.
A output.
Vs
Module and motor supply voltage.
Maximum voltage must not exceed the specified values.
Direction control input. When high or unconnected clockwise rotation is selected. Physical
direction of motor rotation depends also on windings connection.
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Module enable input. When low this input floats the outputs enabling the manual
positioning of the motor. Must be LOW during power-up and down sequence, HIGH during
normal operation.
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