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GS-D500A Schematic ( PDF Datasheet ) - STMicroelectronics

Teilenummer GS-D500A
Beschreibung 100V/5A STEP AND MICROSTEP DRIVE BOARD FOR STEPPER MOTORS
Hersteller STMicroelectronics
Logo STMicroelectronics Logo 




Gesamt 10 Seiten
GS-D500A Datasheet, Funktion
GS-D500A
100V/5A STEP AND MICROSTEP DRIVE BOARD
FOR STEPPER MOTORS
FEATURES
100V Operating Supply Voltage
5A/phase peak current
5, 25, 125 microsteps/step
Full step and half step operation
User selectable phase current
90° out of phase chopping to save power con-
sumption
Galvanic isolation
Full output protection against short-circuits
Thermal and undervoltage protection
Step clock in excess of 200kHz
Fault indication output
Special circuit to reduce midrange instability
DESCRIPTION
The GS-D500A is a member of the SGS-THOM-
SON 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 unusua lly large number
of features that allow a complete control of the
electromechanical characteristics of the motion
system to obtain optimum performance.
The powermos output stages offer both low con-
duction and commutation losses for increased effi-
ciency; this, combined with a complete protection
scheme, results in an extremely rugged unit suit-
able for harsh environment operation.
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Vs DC Supply Voltage
Vss DC Logic Supply Voltage
lph Output Current per Bridge
li Logic Input Current
Vis
Tstg
Thop
Isolation Voltage
Storage Temperature Range
Operating Heatsink Temperature
Note: Absolute maximum ratings are limit values above which the unit can be permanently damaged
* Thermal protection intervention @ Th > 90°C
Value
110
13
6
30
500
– 20 to +85
+85
Unit
V
V
Apk
mA
V
°C
°C
June 1994
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GS-D500A Datasheet, Funktion
GS-D500A
Figure 5. Zero current input circuit
Figure 6. Disable input circuit
A - GS-D500A DESCRIPTION
The GS-D500A is a complete subsystem to drive
stepper motors either in full step or microstep mode.
A very large number of auxiliary functions has been
included to allow extreme simplicity and flexibility in
use.
Particular care has been devoted to protections, so
that the GS-D500A can be safely used in very harsh
environments.
In addition to the obvious function to drive the motor
phases in a chopping mode, the following functions
have been implemented:
- Sine/cosine generation
- Selection of three different microsteps/step rates
- Selection of full/half step drive
- Programming of peak phasecurrent to optimize
the torque
- Automatic phase current reduction at rest (se-
lectable)
- Full protection against short-circuit between
phase-to-phase and phase-to-ground
- Thermal and undervoltage protection
- Galvanic isolation of 3 input signals (clock,
direction, zero current).
- Fault indication output
- On board auxiliary voltages generation
- Midrange stability circuitry (selectable)
As a result, the GS-D500A can provide up to 5A per
phase and, in its simplest application, just three
command signals are required: step clock, direc-
tion, disable.
6/10

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