參數(shù)資料
型號: FAN8035
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 光電元器件
英文描述: 6-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): 13/18頁
文件大小: 547K
代理商: FAN8035
FAN8035
13
5. Focus, Tracking Actuator, Spindle, Sled Motor Drive Part
The Vref at pin 43 is for eliminating the dc components from the input signals and can set by an exteranl circuit.
The voltage gain from Vin to output is as follows ;
Where
V means just ac component.
The total input to output voltage gain is the sum of the input OP amp network gain and 18dB.
The output stage is the balanced transformerless (BTL) driver.
The bias voltage Vp is expressed as ;
M
10K
10K
10K
10K
40K
60K
62K
DO+
DO-
PVCC1(PVCC2)
40K
40K
40K
VREF
IN+
IN-
OUT
Vin
48
1
3
4
9
10
12
13
2
5
11
14
43
28
27
30
29
32
31
35
34
Vp
Vp
V
DP
-
+
Q
P
6
7
8
37
36
Vin
DOP
Vref
V
D
V
D
4
DOP
=
V
+
=
=
4 V
+
DON
V
=
Vout
DON
V
8 V
=
Gain
20
------------
log
20
8
log
18dB
=
=
=
V
P
PVCC1
V
DP
V
1.97
V
CESAT
Q
P
P
(
)
+
60k
62k
-------------------------
×
V
CESAT
Q
P
+
=
-----------------------–
=
V
CESAT
Q
P
+
- - - - - - - - - - (1)
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