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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: 24/35頁
文件大小: 443K
代理商: FAN8623
FAN8623; PRELIMINARY
24
Voice Coil Motor
VCM Driver
The voice coil motor driver is linear, class AB, H-bridge type driver, It includes all power transistors. After the VCM is
enabled via CNTL3, the VCM current level is controlled by two PWM signals. The input voltage level at pin PWMH weighs,
at a maximum, 64 times more than the input voltage at pin PWML. These PWM signals are filtered by an internal second-
order low-pass filter and converted into PWMOUT (DC Voltage). The filter PWMOUT depends only on the duty cycle and
not on the logic level. The PWM Filter's pole is adjustable by pin CFVCM connected to the external capacitor.
Figure 9. PWM decoder & filter schematic 2
Figure 10. VCM driver schematic
+
-
+
-
13
12
11
+
-
+
-
PWMH input
PWML input
R1
1/2 VDD
Vin
R2
R1
1/2 VDD
Vin
R2
VREF
CFVCM
R1
R1
A
C1
C1
Filtout
Gm
Gm
15
-
+
+
-
-
+
+
-
-
Filtout
VREF
R5
R3
VCM+
R6
VCM
-
R3
R5
R7
Errin
Errout
Rext
Cext
R24
Sense
I
VCM
v+
L
RL
Rsense
v
-
VCM
Senseout
vb
R4
vs
+
-
26
27
22
24
30
28
15
R15
R5
R5
VREF
PWM decoder
&
Filter
17
18
VCC
HALFVCC
C9
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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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