參數(shù)資料
型號(hào): AN-32
英文描述: TOPSwitch-GX Flyback Design Methodology
中文描述: 的TOPSwitch - GX系列反激式設(shè)計(jì)方法
文件頁(yè)數(shù): 6/16頁(yè)
文件大?。?/td> 134K
代理商: AN-32
AN-32
6
B
12/02
Figure 4. Primary/Enhanced Feedback Circuit.
Figure 5. Opto/Zener Feedback Circuit.
PI-3330-091102
D
S
C
TOPSwitch-GX
L
CONTROL
+
-
F
X
V
AC
C
IN
V
O
15
Feedback Circuit
1N5251D
22 V
1%
100 nF
50 V
+
CIRCUIT PERFORMANCE
Circuit Tolerance
±
5%
Load Regulation
±
2.
5%
Line Regulation
±
1.5%
PI-3328-112202
D
S
C
TOPSwitch-GX
L
CONTROL
+
-
F
X
V
AC
C
IN
Zener, 2%
LTV817A
470
V
O
47
Feedback Circuit
+
CIRCUIT PERFORMANCE
Circuit Tolerance
±
5%
Load Regulation
±
1%
Line Regulation
±
0.5%
470
is good for Zeners with I
ZT
= 5 mA. Lower values are needed for Zeners with higher I
ZT
. (E.g. 150
for I
ZT
= 20 mA).
47
is suitable for V
O
up to 7.5V. For V
O
> 7.5V, a higher value may be required for optimum transient response.
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