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參數(shù)資料
| 型號(hào)： | AND8098 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Low-Cost 100 mA High-Voltage Buck and Buck-Boost Using NCP1052 |
| 中文描述： | 低成本百毫安高電壓降壓和降壓升壓使用NCP1052 |
| 文件頁(yè)數(shù)： | 9/10頁(yè) |
| 文件大?。?/td> | 93K |
| 代理商： | AND8098 |
AND8098/D
http://onsemi.com
9
Figure 12. Line Regulation of the Dual Output
Buck-boost
INPUT VOLTAGE (Vac)
150
-10
50
300
O
-25
0
-20
-15
250
200
100
-5
Output 1 with 200 mA
Output 2 with 150 mA
CONCLUSION
100 mA high-voltage low-cost buck and buck-boost
circuits using NCP1052 are presented. These circuits are
designed for cost-saving non-isolated application so that
optocoupler and transformer are saved. The possible input
voltage range is from 20 Vdc to 700 Vdc so that it is suitable
for general AC/DC and DC/DC applications with positive or
negative output voltages. It is noted that the standby ability
of the circuits is not good because of the V
CC
capacitor
charging current. However, it can be improved by adding an
auxiliary winding to the V
CC
. The design consideration of
each component in the circuits is explained. By replacing the
NCP1052 with NCP1055, the output current can be
increased. By adding an auxiliary winding, multi-output can
be obtained. A 12 V / 100 mA demo board is presented with
typical 65% efficiency.
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