SGS Thomson Microelectronics GS-D500A Datasheet
100V/5ASTEP AND MICROSTEPDRIVE BOARD
FEATURES
100V OperatingSupplyVoltage
5A/phasepeak current
5, 25, 125 microsteps/step
Fullstep and half step operation
User selectablephasecurrent
90° out of phase chopping to save power consumption
Galvanicisolation
Fulloutput protectionagainstshort-circuits
Thermaland undervoltageprotection
Step clock in excess of 200kHz
Fault indicationoutput
Special circuit to reduce midrangeinstability
GS-D500A
FOR STEPPER MOTORS
DESCRIPTION
The GS-D500Ais a member of the SGS-THOMSON family of stepper motor driver modules and
boards. It drives motors in full step, half step and
microstep mode.
On top of that if offers an unusually large number
of featuresthatallow a complete control of the
electromechanical characteristics of the motion
systemtoobtain optimumperformance.
The powermos output stages offer both low conductionandcommutationlosses for increasedefficiency; this, combined with a completeprotection
scheme, results in an extremely rugged unit suitable for harsh environmentoperation.
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
s
V
ss
l
ph
l
i
V
is
T
stg
T
hop
Note: Absolute maximum ratings are limitvalues above which the unit can be permanently damaged
* Thermal protection intervention @ Th > 90°C
DC Supply Voltage
DC Logic Supply Voltage
Output Current per Bridge
Logic InputCurrent
Isolation Voltage
Storage Temperature Range
Operating Heatsink Temperature
110 V
13 V
6Apk
30 mA
500 V
– 20 to +85 °C
+85 °C
June 1994 1/10
GS-D500A
ELECTRICALCHARACTERISTICS (T
Symbol
V
V
I
V
I
* Output Shorts Protection phase-to-phase, phase-to-ground.
Note: the unitrequires an input filtering capacitor in the range of 4700 to 10000 µF/100V, with low ESR and locatedas close aspossible to the
board.
DC Supply Voltage
s
DC Logic Supply Voltage
ss
Phase Current per Output*
ph
Logic Input Current
l
i
On board Logic
sl
Supply Output
On board Logic
osl
Supply Current Output
Clock Pulse Frequency
f
c
Parameter Test Conditions Min Typ Max Unit
=25°C and Vs=24V unless otherwisespecified)
amb
12 100 V
11.5 12 12.5 V
0.5 5 A
4.75 5 5.25 V
10 mA
100 mA
200 kHz
Figure1. Signals timing
2/10
Figure2. Block diagram
GS-D500A
3/10
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