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参数资料
| 型号： | LV8741V |
| 厂商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 1.75 A, PDSO44 |
| 封装： | 0.275 INCH, SSOP-44 |
| 文件页数： | 5/25页 |
| 文件大小： | 204K |
| 代理商： | LV8741V |
LV8741V
No.A0814-13/25
(6) Forward/reverse switching function
FR
Operating mode
Low
Clockwise (CW)
High
Counter-clockwise (CCW)
The internal D/A converter proceeds by one bit at the rising edge of the input STEP pulse.
In addition, CW and CCW mode are switched by setting the FR pin.
In CW mode, the channel 2 current phase is delayed by 90° relative to the channel 1 current.
In CCW mode, the channel 2 current phase is advanced by 90° relative to the channel 1 current.
(7) Setting the chopping frequency
For constant-current control, chopping operation is made with the frequency determined by the external resistor
(connected to the RCHOP pin).
The chopping frequency to be set with the resistance connected to the RCHOP pin (pin 11) is as shown below.
FR
CW mode
CCW mode
STEP
Excitation position
1ch output
2ch output
(1)
(2)
(3)
(4)
(5)
(6)
(5)
(4)
(3)
(4)
(5)
PCA01883
0
20
40
60
80
100
030
20
40
10
50
60
RCHOP – k
Fchop
–
kHz
Chopping frequency settings (reference data)
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