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參數(shù)資料
| 型號： | BD6718FV-E2 |
| 元件分類： | 運動控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 0.02 A, PDSO20 |
| 封裝： | ROHS COMPLIANT, SSOP-20 |
| 文件頁數(shù)： | 16/34頁 |
| 文件大?。?/td> | 1916K |
| 代理商： | BD6718FV-E2 |
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b) PWM operation by pulse input ＜BD6709FS, BD6718FV, BD6721FS＞
Pulse signal can be input to VMIN terminal for PWM operation as shown in Fig.78.
The ratio of ON-DUTY of the output changes by the cycle of the input pulse signal as shown in Fig.79.
Set the voltage of the terminal VTH as VREF＞VTH＞COSCH.
Set the voltage input to the VMIN terminal
H level : VREF＞VMIN＞VOSCH
L level : VOSCL＞VMIN
as shown in Fig.79.
Output is ON in H logic of external PWM signal and OFF in L logic.
b-2) PWM operation by pulse input＜BD6722FS＞
By pulling up VTH(4PIN) to Vcc as shown in Fig.80, the output can operate in PWM by inputting the pulse signal
directly to VMIN(6PIN). However, adjust the value of R2 to become VTH=15V at Vcc≧15V so that the voltage of the
terminal VTH should not exceed 15V.
The ratio of ON-DUTY of the output changes by the cycle of the input pulse signal as shown in Fig.81.
Set the voltage input to the VMIN terminal
H level : Vcc-2.0V＞VMIN＞VOSCH
L level : VOSCL＞VMIN
as shown in Fig.81.
Output is ON in H logic of external PWM signal and OFF in L logic.
Fig.78
Direct control by DUTY of external PWM
Fig.79 VTH, VMIN input voltage and output PWM timing chart in pulse input mode
VREF
OUTPUT Tr. OFF
VTH
COSC
VMIN
GND
OUT
VTH
－
+
VMIN
COSC
PULSE INPUT
R1
R2
Vcc
Fig.80
External PWM signal input
Fig.81
Pulse input operation timing chart
LAIN
LAOUT
COSC
VMIN
LEVEL AMP
PWM COMP
+
-
PWM input
-
+
VTH
CON
T
RO
L
LOGI
C
VREF
COSC
VMIN
GND
OUTPUT
A1H or A2H
OUTPUT Tr
ON
OUTPUT Tr
OFF
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| BD6721FS | 制造商:ROHM 制造商全稱:Rohm 功能描述:Single-Phase Full-Wave Motor Driver for Fan Motor |
| BD6721FS_1 | 制造商:ROHM 制造商全稱:Rohm 功能描述:Single-Phase Full-Wave Motor Driver for Fan Motor |
| BD6721FS-E2 | 功能描述:IC MOTOR DRIVER SGL PHASE SSOP16 RoHS:是 類別:集成電路 (IC) >> PMIC - 電機和風扇控制器，驅動器 系列:- 產(chǎn)品變化通告:ATA683(3,4)PLQW Obsolescence 09/Aug/2012 標準包裝:1 系列:- 應用:DC 電機控制器，無刷（BLDC），3 相 評估套件:可供 輸出數(shù):1 電流 - 輸出:100mA 電壓 - 負載:5.25 V ~ 20 V 電源電壓:5.25 V ~ 20 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應商設備封裝:48-VQFN（7x7） 包裝:剪切帶 (CT) 其它名稱:ATA6833-PLQWCT |
| BD6722FS | 制造商:ROHM 制造商全稱:Rohm 功能描述:Single-Phase Full-Wave Motor Driver for Fan Motor |
| BD6722FS_1 | 制造商:ROHM 制造商全稱:Rohm 功能描述:Single-Phase Full-Wave Motor Driver for Fan Motor |
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