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參數資料
| 型號： | FAN8729 |
| 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, QFP-52/48 |
| 文件頁數： | 15/24頁 |
| 文件大小： | 487K |
| 代理商： | FAN8729 |
FAN8729
15
7. Rotational Direction Detecting Function
Rotation detection circuit gives the result to DIR pin by
detecting the MD’s rotational direction.
Detects the MD’s rotational direction using hall signals H2 and
H3.
Feature Table.
Rotation
EC < ECR
Forward
EC > ECR
Reverse
In case of forward rotational detection, the phase of hall signal shows as H3
→
H2
→
H1 as follows;
In case of reverse rotational detection, the phase of hall signal shows as H1
→
H2
→
H3 as follows;
Forward/Reverse rotational direction is decided as follows. When hall signal H3 is falling edge, if H2 shows "High", the
rotational direction is "Forward", and if H2 shows "Low", rotational direction is "Reverse".
DIR
Low
High
D
CK
Q
+
-
+
-
R
D-F/F
8
DIR
H2+
H2-
H3+
H3-
H1
H2
H3
(b)
H1
H2
H3
(a)
相關PDF資料 |
PDF描述 |
|---|---|
| FAN8729_NL | Spindle+4-CH Motor Drive IC |
| FAN8732BG | Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
| FAN8732BGX | Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
| FAN8732CG | Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
| FAN8732CGX | Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
相關代理商/技術參數 |
參數描述 |
|---|---|
| FAN8729_NL | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle+4-CH Motor Drive IC |
| FAN8731D | 功能描述:功率驅動器IC RoHS:否 制造商:Micrel 產品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| 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)] |
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