參數(shù)資料
型號： KA3023D
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類： 光電元器件
英文描述： 3-Phase BLDC Motor Driver(三相無刷直流電機(jī)驅(qū)動器)
中文描述： CD MOTOR DRIVER, PDSO28
封裝： 0.375 INCH, HSSOP-28
文件頁數(shù)： 8/18頁
文件大?。?/td> 283K
代理商： KA3023D
FAN8423D (KA3023D); PRELIMINARY
8
Application Information
1. TORQUE CONTROL & OUTPUT CURRENT CONTROL
1) By amplifying the voltage difference between Ec and Ecr from Servo IC, the Torque Sense AMP produces the input
(V
AMP
) for the Current Sense AMP.
2) The output current (I
O
) is converted into the voltage (V
CS
) through the sense resistor (R
CS
) and compared with the V
AMP
.
By the negative feedback loop, the sensed output voltage, VCS is equal to the input V
AMP
. Therefore, the output current
(I
O
) is linearly controlled by the input V
AMP
.
3) As a result, the signals, E
C
and E
CR
can control the velocity of the Motor by controlling the output current (I
O
) of the
Driver.
4) The range of the torque voltage is as shown below.
+-
+-
Torque AMP
Ec
Ecr
V
M
ECR-EC
Current Sense AMP
TSD
Gain
Controller
Driver
M
Rcs
Vcs
+
-
Io
V
M
Rotation
E
CR
> Ec
Forward rotation
E
CR
< Ec
Stop after detecting re-
verse rotation
The input range of E
CR
and E
C
is 1.0 V ~ 4 V ( R
NF
= 0.5[
] )
Forward
Ecoff+
Ecoff-
Reverse
Current
[mA]
6
0
500
700
0.51[A/V]
50mV
-50mV
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