參數(shù)資料
型號(hào)： KA3016D
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類： 光電元器件
英文描述： SPINDLE MOTOR DRIVER
中文描述： CD MOTOR DRIVER, PDSO28
封裝： 0.375 INCH, HSSOP-28
文件頁(yè)數(shù)： 7/18頁(yè)
文件大小： 522K
代理商： KA3016D
CD-ROM PRODUCTS
KA3016D
7
MIC-99D001
January 1999
APPLICATION INFORMATION
1. TORQUE CONTROL & OUTPUT CURRENT CONTROL
By amplifying the voltage difference between E
C
and ecr from servo IC, the torque sense amp produces the
input (V
AMP
) for the current sense amp.
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, V
CS
is equal to the input V
AMP
.
Therefore, the output current (I
O
) is linearly controlled by the input V
AMP
.
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.
The range of the torque voltage is as shown below.
The input range of E
CR,
E
C
is 0.2V ~ 4V.
+
+
Torque AMP
E
C
E
CR
V
M
ECR-EC
Current Sense AMP
TSD
Gain
Controller
Driver
M
R
CS
V
CS
+
I
O
V
M
Forward
Ecoff+
Ecoff
Reverse
V
RNF
[V]
3 mV
0
E
CR
-E
C
Rotation
E
CR
> E
C
Forward rotation
E
CR
< E
C
Stop after detecting
reverse rotation
0.51[A/V]
50mV
50mV
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