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參數(shù)資料
| 型號： | KA3011BDTF |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 光電元器件 |
| 英文描述： | 3-Phase BLDC Motor Driver |
| 中文描述： | 2 CHANNEL CD MOTOR DRIVER, PDSO28 |
| 封裝： | 0.375 INCH, HEAT SINK, SSOP-28 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大小： | 317K |
| 代理商： | KA3011BDTF |
KA3011BD
11
6. REVERSE ROTATION PREVENTION
When the output of the OR Gate, A is LOW, it steers all the output current of the current sense Amp to the Gain Controller
zero. The output current of the Driver becomes zero and the motor stops.
As in the state of the forward rotation, the D-F/F output, Q is HIGH and the motor rotates normally. At this state, if the
control input is changed such that EC>ECR, then the motor rotates slowly by the reverse commutation in the Driver. When
the motor rotates in reverse direction, the D-F/F output becomes Low and the OR Gate output, becomes LOW. This
prevents the motor from rotating in reverse direction. The operation principle is shown in the table and the flow chart.
Rotation
H2
H3
D-F/F
(Q)
Reverse rotation preventer
E
C
<E
CR
Forward
-
E
C
>E
CR
-
Brake and stop
Forward
Reverse
H
L
H
→
L
H
→
L
H
L
+
+
+
Current
Sense
Amp
Gain
Controller
Driver
D-F/F
M
D
Q
CK
H3+
H3
H2+
H2
E
C
E
CR
A
Low Active
Forward rotation at E
C
< E
CR
Rotating speed is decreased due to reverse torque at E
C
>E
CR
. (Motor still rotates forward)
At the moment that the motor rotates in reverse, the reverse rotation preventer makes the output power transistor open.
Rotating reverse at short time due to motor inertia
Stop within 1/6 turn reverse rotating
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| KA3020D | 3-Phase BLDC Motor Driver(三相無刷直流電機驅動器) |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| KA3012D | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:4-Channel Motor Driver |
| KA3012D02 | 功能描述:馬達/運動/點火控制器和驅動器 RoHS:否 制造商:STMicroelectronics 產(chǎn)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 |
| KA3012D-02 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:4-Channel Motor Driver |
| KA3012D02TF | 功能描述:馬達/運動/點火控制器和驅動器 BTL Motor Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)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 |
| KA3012D-02TF | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:4-Channel Motor Driver |
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