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參數(shù)資料
| 型號： | KA3017 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 光電元器件 |
| 英文描述： | Spindle + 4-CH Motor Driver |
| 中文描述： | CD MOTOR DRIVER, PQFP48 |
| 封裝： | 14 X 14 MM, HEAT SINK, QFP-48 |
| 文件頁數(shù)： | 14/26頁 |
| 文件大小： | 433K |
| 代理商： | KA3017 |
KA3017
14
- When the input signal Vin, through the pin (pin 22, 23, 24 and 25) is above the Vbias, then the motor (actuator) moves in
reverse direction.
-
T
o change the gain, modify the external resistor's value (Rextern)
3. Torque & Output Current Control
Torque & Output Current Control
- By amplifying the voltage difference between E
C
and E
CR
from the Servo IC, the torque sense AMP produces the input
voltage (V
AMP
) for the current sense AMP.
- The current sense AMP produces the input for the Gain controller to allow the output current (I
O
) of the driver to be
controlled by the input voltage (V
AMP
), where the output current (I
O
) is detected by the sense resistor (R
NF
) and is
converted into V
RNF
.
- In the end, the signals of the Servo IC control the velocity of the motor by controlling the output current (I
O
) of the
driver.
- When the junction temperature rises up to 175
°
C, the output drive circuit shuts down.
- The range of the torque control input voltage is as shown below.
The input range (E
C
) of the Torque Sense AMP is 0.5V ~ 3.3V
+
+
Torque sense amp
E
CR
E
C
Current sense amp
TSD
Gain
Controller
Driver
M
R
NF
I
O
V
M
V
AMP
V
RNF
+
V
M
Forward
Ecoff+
Ecoff
Reverse
V
RNF
[V]
3 mV
0
E
CR
-E
C
[V]
Rotation
Ec < E
CR
Forward rotation
Ec > E
CR
Stop after detecting
reverse rotation
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