a4982 Allegro MicroSystems, Inc., a4982 Datasheet - Page 14

• Manufacturer Part Number: a4982
• Description: Dmos Microstepping Driver With Translator And Overcurrent Protection
• Manufacturer: Allegro MicroSystems, Inc.

A4982
Figure 10. Decay Mode for Full-Step Increments
Direction = H
Direction = H
Phase 1
Phase 2
STEP
I
I
OUT1A
OUT2A
(%)
(%)
–100.00
–100.00
100.00
–70.71
100.00
–70.71
Direction = H
Direction = H
70.71
70.71
0.00
0.00
Figure 12. Decay Modes for Quarter-Step Increments
Phase 1
Phase 2
STEP
I
I
OUT2B
OUT1A
(%)
(%)
–100.00
–100.00
100.00
–38.27
–70.71
–92.39
100.00
–38.27
–70.71
–92.39
92.39
70.71
38.27
92.39
70.71
38.27
0.00
0.00
DIR= H
Slow
DMOS Microstepping Driver with Translator
Slow
Slow
Mixed
Slow
Mixed
Slow
*With ROSC pin tied to GND
DIR= H
Mixed*
Mixed
Figure 11. Decay Modes for Half-Step Increments
Slow
Direction = H
Direction = H
Phase 1
Phase 2
Mixed*
STEP
I
I
OUT1A
OUT2B
Mixed
(%)
(%)
and Overcurrent Protection
Slow
–100.00
–100.00
100.00
–70.71
100.00
–70.71
70.71
70.71
0.00
0.00
Mixed
Mixed
Slow
Slow
Slow
*With ROSC pin tied to GND
Mixed
Slow
DIR= H
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
Mixed
Slow
Mixed*
Mixed*
Mixed
Slow
Mixed
Slow
Mixed
Slow
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