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参数资料
| 型号： | BD6718FV-E2 |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 0.02 A, PDSO20 |
| 封装： | ROHS COMPLIANT, SSOP-20 |
| 文件页数： | 16/34页 |
| 文件大小： | 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| BD6721FS | 制造商:ROHM 制造商全称:Rohm 功能描述:Single-Phase Full-Wave Motor Driver for Fan Motor |
| BD6721FS_1 | 制造商:ROHM 制造商全称: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 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 产品变化通告:ATA683(3,4)PLQW Obsolescence 09/Aug/2012 标准包装:1 系列:- 应用:DC 电机控制器，无刷（BLDC），3 相 评估套件:可供 输出数:1 电流 - 输出:100mA 电压 - 负载:5.25 V ~ 20 V 电源电压:5.25 V ~ 20 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-VQFN（7x7） 包装:剪切带 (CT) 其它名称:ATA6833-PLQWCT |
| BD6722FS | 制造商:ROHM 制造商全称:Rohm 功能描述:Single-Phase Full-Wave Motor Driver for Fan Motor |
| BD6722FS_1 | 制造商:ROHM 制造商全称:Rohm 功能描述:Single-Phase Full-Wave Motor Driver for Fan Motor |
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