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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： | 14/24頁 |
| 文件大小： | 487K |
| 代理商： | FAN8729_NL |
FAN8729
14
6. Calculation of Gain & Torque Current
Toque limit circuit limits the current of spindle motor.
Driver amp circuit limits the current of spindle motor by comparing the voltage detected from R
CS
and the voltage output
from torque sense map.
Output current of the motor can be limited by adjusting the R
CS
value.
Maximum output current of motor is found as follows;
VMAX within IC is fixed at 350mV.
Gm of torque sense amp is set to 0.71.
ER
ECR
VM1
Driver
Convertor
Current / Voltage
VM1
Gm
+
-
Transistors
Power
Distributor
Commutation
+
+
-
+
-
Vin
R1
+
-
Vmax
Values
Absolute
Feedback loop
Negative
H2
H3
H1
current limiting
Max. output
U
V
W
Io
VM1
Rcs
CS1(Pin11)
Io
+
Vs
-
Output
Current sense
Rcs
mV
Rcs
V
mA
Io
350
max
]
[
=
=
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相關代理商/技術參數 |
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| 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)] |
| 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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