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參數資料
| 型號： | FAN8623 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | 12V Spindle Motor and Voice Coil Motor Driver(12V電源的主軸電機和語音線圈電機驅動器) |
| 中文描述： | VOICE COIL MOTOR CONTROLLER, 1.2 A, PQFP52 |
| 封裝： | 14 X 14 MM, HEAT SINK, QFP-48 |
| 文件頁數： | 19/35頁 |
| 文件大小： | 443K |
| 代理商： | FAN8623 |
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FAN8623; PRELIMINARY
19
PWMDEC and Speed Control
Motor speed is measured by the ASIC via the FG output. The digital ASIC compares FG frequency with the target motor
speed and sends the speed compensation signal to the PWMSP input of the FAN8623. This PWM signal is internally filtered
and is converted into DC voltage through the built-in PWM Decoder Filter. The analog output of the filter depends on the duty
of the PWM signal. The filter is a 3rd order, low-pass filter. The first pole location of the filter is determined by the external
capacitor connected to pin(48) CFSP.
Figure 4. Spindle current vs PWMSP duty variation ( R33 = 0.25
)
Start-up Mode
In the sensorless BLDC motor the Back-EMF is used to determine the rotor position.
At standstill condition, there is no Back-EMF voltage and no FG output. There is no information about the motor position.
To drive the spindle in the start-up mode, the digital ASIC sends the spindle enable signal via CNTL1 and supplies the HIGH
or OPEN signal via CNTL2 to be used as commutation signal of the spindle motor.
PWMSP vs I
SPM
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Duty(%)
I
OUT
相關PDF資料 |
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|---|---|
| FAN8700 | Camera Motor Drive and Control IC |
| FAN8702 | 6 Channel DSC Motor Driver |
| FAN8702B | DUO-MODULAR TERM.WK 4/D2/2U/V0 |
| FAN8702MP | 6 Channel DSC Motor Driver |
| FAN8702MPX | 6 Channel DSC Motor Driver |
相關代理商/技術參數 |
參數描述 |
|---|---|
| FAN8700 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Camera Motor Drive and Control IC |
| FAN8702 | 功能描述:馬達/運動/點火控制器和驅動器 6CH Motor Drive IC 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 |
| FAN8702B | 功能描述:馬達/運動/點火控制器和驅動器 DSC 1CH IC 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 |
| FAN8702MP | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:6 Channel DSC Motor Driver |
| FAN8702MPX | 功能描述:馬達/運動/點火控制器和驅動器 6CH Motor Drive IC 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 |
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