A4985_12 Datasheet, PDF (16/22 Pages) Allegro MicroSystems – DMOS Microstepping Driver with Translator And Overcurrent Protection

A4985
DMOS Microstepping Driver with Translator
And Overcurrent Protection
STEP
100.00
92.39
83.15
70.71
55.56
Phase 1
I_OUT1A
Direction = H
(%)
38.27
19.51
0.00
–19.51
–38.27
–55.56
–70.71
–83.15
–92.39
–100.00
100.00
92.39
83.15
70.71
55.56
Phase 2
I_OUT2B
Direction = H
(%)
38.27
19.51
0.00
–19.51
–38.27
–55.56
–70.71
–83.15
–92.39
–100.00
Slow
Mixed
Mixed
Mixed*
Slow
Slow
Mixed*
Mixed
*With ROSC pin tied to GND
DIR= H
Figure 11. Decay Modes for Eighth-Step Increments
Mixed
Slow
Allegro MicroSystems, Inc.
16
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com