参数资料
型号: A3981KLPTR-T
厂商: Allegro Microsystems Inc
文件页数: 36/43页
文件大小: 0K
描述: IC MOTOR DVR MICROSTEP 28-TSSOP
标准包装: 1
系列: *
应用: *
输出数: *
电流 - 输出: *
电压 - 负载: *
电源电压: *
工作温度: *
安装类型: 表面贴装
封装/外壳: 28-SOIC(0.173",4.40mm 宽)裸露焊盘
供应商设备封装: 28-TSSOP 裸露焊盘
包装: 标准包装
其它名称: 620-1458-6
A3981
Automotive, Programmable Stepper Driver
_
Stator
_
_
_
A
N
B
A
S
B
A
N
B
A
S
B
A
B
(a)
? Phase A energized in positive direction
? Phase B not energized
S
N
S
N
N
Permanent magnet poles on the rotor aligned with
electromagnet poles on the stator
N
S
N
S
S
Rotor
_
Stator
_
_
_
A
B
N
A
B
S
A
B
N
A
B
S
A
B
(b)
? Phase A not energized
? Phase B energized in positive direction
N
S
N
S
N
Rotor moves to the right to realign permanent
magnet poles on the rotor to the electromagnet
poles on the stator.
S
N
S
N
S
Rotor
_
Stator
_
_
_
A
S
B
A
N
B
A
S
B
A
N
B
A
B
(c)
? Phase A energized in negative direction.
? Phase B not energized
N
S
N
S
N
Rotor moves to the right to realign permanent
magnet poles on the rotor to the electromagnet
poles on the stator.
S
N
S
N
S
Rotor
A
B
_
A
Stator
_
B A
B
_
A
_
B
(d)
? Phase A not energized.
S
S
N
N
S
S
N
N
S
A
B
? Phase B energized in negative direction
Rotor moves to the right to realign permanent
magnet poles on the rotor to the electromagnet
poles on the stator.
N
S
N
S
N
Rotor
Figure A1. Basic principle of bipolar stepper motor operation
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
36
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