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參數(shù)資料
| 型號： | FAN8461G |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | Single Phase Full Wave BLDC Motor Driver |
| 中文描述： | BRUSHLESS DC MOTOR CONTROLLER, 1.2 A, PDSO10 |
| 封裝： | 0.225 INCH, SSOP-10 |
| 文件頁數(shù)： | 9/14頁 |
| 文件大?。?/td> | 301K |
| 代理商： | FAN8461G |
FAN8461G
9
3. Hall Sensor Amplifier
Figure 2. Hall Sensor Interface
The hall current (I
H
) is determined as follows;
R
H
R
i
+
(
)
Where, RH is an external limiting resistor and Ri is input impedance of hall sensor. An external capacitor, C
H1
, can be used to
reduce a power supply noise.C
H2
can reduce the instant peak current using H-bridge’s commutation. The input range of hall
amplifier is between 0V and V
CC
-2.8V as shown in following figure.
Figure 3. Hall Amplifier Input Range
Table 1. Hall Sensor Outputs and Related Pin outputs
H+
H-
LD
H
L
Low Level
L
H
Low Level
-
-
8. Open Collector FG Output for Speed Feedback
The FG output comes from the hall amplifier output. Because the FG output is open collector type, end user can pull up this
pin with a external resistor to the supply voltage of their choice(that is 5 or 3.3V). This resulting output signal has two pulses
per revolution on a four pole motor. It is recommednd that this FG output be higher than the GND potential.
9. Supply Voltage Consideration
A supply sustain capacitor(C
R)
should be placed as close to VCC pin with GND as layout permits. A reverse supply protection
diode(D
R
) prevent motor current from recirculating to power source when phase commutation occur. This results in increasing
VCC pin voltage. This capacitor absorbs motor recirculating current and limits VCC pin voltage. In general, large motor wind-
ing induactance and current need large value of C
R.
10. Thermal Shutdown
TSD on: Two high side outputs are off.(Typ. 175
°
C)
TSD off:The circuit can be reactivated and begin to operate in a normal condition. (Typ. 150
°
C)
OUT 1
L
H
-
OUT 2
H
L
-
AL
L
L
H
TACO
L
H
L or H
Remark
ROTATING
LOCK
C
H1
FAN8461G
IN-
IN+
1
2
V+
Hall
Sensor
C
H2
RH
Ri
IH
--------------------------
=
V S
V S -2 .8 V
V S / 2
G N D
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| FAN8463 | Terminal Block |
| FAN8463MPX | BTL Single Phase Full Wave BLDC Motor Driver |
| FAN8463MTC | BTL Single Phase Full Wave BLDC Motor Driver |
| FAN8463MTCX | BTL Single Phase Full Wave BLDC Motor Driver |
| FAN8486D | 2-Phase BLDC Motor Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN8461GX | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Single Phase Full Wave BLDC Motor Driver |
| FAN8463 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:BTL Single Phase Full Wave BLDC Motor Driver |
| FAN8463MPX | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:BTL Single Phase Full Wave BLDC Motor Driver |
| FAN8463MTC | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:BTL Single Phase Full Wave BLDC Motor Driver |
| FAN8463MTCX | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:BTL Single Phase Full Wave BLDC Motor Driver |
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