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參數資料
| 型號： | FAN8727 |
| 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, HEAT SINK, QFP-48/52 |
| 文件頁數： | 15/24頁 |
| 文件大小： | 480K |
| 代理商： | FAN8727 |
FAN8727
15
4. Power Save Function
- This function block operates the power saving function.
- The power save circuit is activated by operating TR Q1.
- When the SS (Start/Stop) pin 10 is high (V
CC
), the TR Q1 is turned on so that the bias circuit is enabled. On the other
hand, when the SS (Start/Stop) pin 10 is Open or Low (GND), the TR Q1 is turned off so that the bias circuit is disabled.
- The power save operation controlled by SS (pin 10) input conditions is as follows;
5. Short Brake Function
When the pick-up part moves from the inner to the outer spindle of the MD, the brake function of the reverse voltage is com-
monly employed to rate the rotational velocity of the spindle motor.However, if the spindle motor rotates rapidly, the brake
function of the reverse voltage may produce too much heat at the drive IC.
To remove these shortcomings and to enhance efficiency, the short brake function is added to FAN8727. When the short brake
function is active, all upper Power transistors are turned off and the lower Power transistors turned on, so as to reduce the rota-
tional velocity of the motor. The short brake operation controlled by SB (pin 12), and the inputs conditions are as follows.
Pin#10
HIGH
OPEN/LOW
FAN8727
START
STOP
Pin#12
HIGH
LOW
SHORT BRAKE
ON
OFF
10
V
CC
Start
Stop
12K
30K
Q1
100k
Bias block
14
15
16
MOTOR
OFF
ON
12
V
CC
ON
OFF
80K
1K
Q1
Drive logic
V
M
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| FAN8728 | Spindle + 4-CH Input PWM Motor Drive IC |
| FAN8729 | Spindle+4-CH Motor Drive IC |
| 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)] |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| FAN8727_04 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle + 4-CH Motor Drive IC |
| FAN8727_NL | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle + 4-CH Motor Drive IC |
| FAN8728 | 功能描述:馬達/運動/點火控制器和驅動器 BLDC+ 4Ch BTL Driver RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| FAN8729 | 功能描述:馬達/運動/點火控制器和驅動器 BLDC+4CH BTL RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| FAN8729_NL | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle+4-CH Motor Drive IC |
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