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A3967SLB
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
Microstepping Driver with T
ranslator
A3967
10
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Dwg. WK-004-19
PHASE 1
CURRENT
PHASE 2
CURRENT
STEP
INPUT
SLOW
DECAY
70.7%
–70.7%
70.7%
–70.7%
SLOW
DECAY
Full Step Operation
MS
1
= MS
2
= L, DIR = H
The vector addition of the output currents at any step is
100%.
Microstepping Driver with T
ranslator
A3967
11
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Dwg. WK-004-18
PHASE 1
CURRENT
PHASE 2
CURRENT
STEP
INPUT
SLOW
DECAY
MIXED
DECAY
SLOW
DECAY
MIXED
DECAY
100%
–100%
100%
–100%
SLOW
DECAY
MIXED
DECAY
SLOW
DECAY
MIXED
DECAY
SLOW
DECAY
MIXED
DECAY
SLOW
DECAY
MIXED
DECAY
SLOW
DECAY
MIXED
DECAY
SLOW
DECAY
MIXED
DECAY
70.7%
–70.7%
70.7%
–
70.7%
Half Step Operation
MS
1
= H, MS
2
= L, DIR = H
The mixed-decay mode is controlled by the percent fast decay voltage (V
PFD
). If the volt-
age at the PFD input is greater than 0.6V
CC
then slow-decay mode is selected. If the volt-
age on the PFD input is less than 0.21V
CC
then fast-decay mode is selected. Mixed decay
is between these two levels.
Microstepping Driver with T
ranslator
A3967
12
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Quarter Step Operation
MS
1
= L, MS
2
= H, DIR = H
The mixed-decay mode is controlled by the percent fast decay voltage (V
PFD
). If the
voltage at the PFD input is greater than 0.6V
CC
then slow-decay mode is selected. If the
voltage on the PFD input is less than 0.21V
CC
then fast-decay mode is selected. Mixed
decay is between these two levels.
Dwg. WK-004-17
PHASE 1
CURRENT
PHASE 2
CURRENT
STEP
INPUT
SLOW
DECAY
MIXED
DECAY
SLOW
DECAY
MIXED
DECAY
100%
–100%
100%
–100%
SLOW
DECAY
MIXED
DECAY
SLOW
DECAY
MIXED
DECAY
38.3%
70.7%
–70.7%
70.7%
–70.7%
–38.3%
38.3%
–38.3%
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
A3967SLB
Mfr. #:
Buy A3967SLB
Manufacturer:
Description:
IC MTR DRV BIPOLAR 3-5.5V 24SOIC
Lifecycle:
New from this manufacturer.
Delivery:
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