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參數資料
| 型號： | FAN8729_NL |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 光電元器件 |
| 英文描述： | Spindle+4-CH Motor Drive IC |
| 中文描述： | 4 CHANNEL CD MOTOR DRIVER, PQFP52 |
| 封裝： | 14 X 14 MM, LEAD FREE, QFP-52/48 |
| 文件頁數： | 16/24頁 |
| 文件大小： | 487K |
| 代理商： | FAN8729_NL |
FAN8729
16
8 Reverse Rotation Preventing Function
Reverse rotation prevention circuit has a function for intercepting the reverse rotation of MD.
When SERVO control input is EC<ECR, MD rotates forward and Q which is the output of D-F/F goes "High".
When SERVO control input is EC>ECR, motor puts on reverse brake and MD speed is rapidly reduced.
When SERVO control input remains EC>ECR, MD rotates reverse and Q which is the output of D-F/F goes "Low", in
result current sense amp is interrupted. Accordingly gain controller goes OFF and motor is stopped.
Feature Table.
Rotation
H2
H3
D-F/F
DIR
Reverse Rotation Preventer
E
C
<E
CR
Forward
–
E
C
>E
CR
Brake and Stop
Stop
Forward
Reverse
H
L
H
→
L
H
→
L
H
L
L
H
+
-
+
-
H2+
H2-
H3+
H3-
D
CK
Q
R
D-F/F
+
-
E
C
E
CR
Gain
controller
Current
Sense
Amp
Driver
M
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| FAN8732BG | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
| FAN8732BGX | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
| FAN8732CG | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
| FAN8732CGX | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
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