參數(shù)資料
型號(hào): IL300-X017
廠商: VISHAY SEMICONDUCTORS
元件分類: 光電耦合器
英文描述: IL300 Linear Optocoupler, High Gain Stability, Wide Bandwidth
中文描述: High Linearity Optocouplers Single Linear, High Gain, Wide Bandwidth
文件頁數(shù): 7/11頁
文件大小: 186K
代理商: IL300-X017
IL300
www.vishay.com
Vishay Semiconductors
Rev. 1.7, 23-Sep-11
7
Document Number: 83622
For technical questions, contact:
optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc91000
Fig. 11 - Isolated Control Amplifier
For best input offset compensation at U1, R2 will equal R3.
The value of R1 can easily be calculated from the following.
V
------------------------
- 1
The value of R5 depends upon the IL300 Transfer Gain (K3).
K3 is targeted to be a unit gain device, however to minimize
the part to part Transfer Gain variation, Infineon offers K3
graded into ± 5 % bins. R5 can determined using the
following equation,
V
V
MONITOR
or if a unity gain amplifier is being designed
(V
MONITOR
= V
OUT
, R1 = 0), the equation simplifies to:
Fig. 12 - Switching Mode Power Supply
Fig. 13 - DC Coupled Power Supply Feedback Amplifier
iil300_16
+
-
Voltage
monitor
R1
R2
To control
input
ISO
AMP
+1
R1
R2 x
V
a
=
R5
---------------------------
x R3 x R1
R2
+
)
R2 x K3
=
R5
K3
-------
=
iil300_17
Switch
Xformer
Switch
mode
regulator
TDA4918
Isolated
feedback
Control
110/
220
main
DC output
AC/DC
rectifier
AC/DC
rectifier
iil300_18
8
7
6
5
100 pF
4
3
1
2
8
6
7
K1
VCC
VCC
1
2
3
4
K2
VCC
Vmonitor
R1
20 k
Ω
R2
30 k
Ω
R3
30 k
Ω
R4
100
Ω
Vout
To
control
input
R5
30 k
Ω
IL300
Vb
Va
+
-
U1
LM201
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