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參數資料
| 型號： | FAN8460MPX |
| 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 with Variable Speed Control |
| 中文描述： | BRUSHLESS DC MOTOR CONTROLLER, 1.2 A, DSO14 |
| 封裝： | 4 X 4 MM, MLP-8 |
| 文件頁數： | 14/22頁 |
| 文件大小： | 433K |
| 代理商： | FAN8460MPX |
FAN8460MTC/FAN8460MP
14
6. Hall Sensor Amplifier
Figure 1. 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 2. Hall Amplifier Input Range
Table 1. Hall Sensor Outputs and Related Pin outputs
(H+)
-
(
H-)
LD
Positive
Low Level
Negative
Low Level
-
-
7 Open Collector TACO Output for Speed Feedback
The TACO output comes from the hall amplifier output. Because the TACO 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.
9 Supply Voltage Consideration
A supply sustain capacitor (C
R)
should be placed as close to VM pin with GND as layout permits. A reverse supply protection
diode (D
R
) prevent motor current from recirculating to power source when PWM operation and phase commutation occur.
This results in increasing VM and VS pin voltage. This capacitor absorbs motor recirculating current and limits VM and VCC
pin voltage. In general, large motor winding inductance and current need large value of C
R.
9. Thermal Shutdown
TSD on: Two high side output TR are off.(Typ. 175
°
C)
TSD off: The circuit can be reactivated and begin to operate in a normal condition. (Typ. 150
°
C)
OUT A
L
PWM
-
OUT B
PWM
L
-
AL
L
L
H
TACO
L
H
L or H
Remark
ROTATING
LOCK
FAN8460MTC
FAN8460MP
H-
H+
1
2
V+
Hall
Sensor
C
H2
RH
Ri
C
H1
IH
--------------------------
=
V S
V S -2 .8 V
V S / 2
G N D
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| FAN8460MTC | Single Phase Full Wave BLDC Motor Driver with Variable Speed Control |
| FAN8460MTCX | Single Phase Full Wave BLDC Motor Driver with Variable Speed Control |
| FAN8461GX | Single Phase Full Wave BLDC Motor Driver |
| FAN8461G | Single Phase Full Wave BLDC Motor Driver |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| FAN8460MTC | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Single Phase Full Wave BLDC Motor Driver with Variable Speed Control |
| FAN8460MTCX | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN8461G | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Single Phase Full Wave BLDC Motor Driver |
| 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 |
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