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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 7/10頁 |
| 文件大?。?/td> | 93K |
| 代理商： | AND8098 |
AND8098/D
http://onsemi.com
7
the temperature rise and reduces the on resistance. Finally,
the efficiency of the circuit is benefited.
EXAMPLES
12 V / 100 mA NCP1052 Buck Demo Board
Figure 9. Layout of the Demo Board
As shown in Figure 9, a 2 inch by 1.5 inch small
surface-mount demo board of 12 V / 100 mA buck is
presented. The design is made on a single-sided board. The
bill of material is shown in Table 2. The component symbols
are those in Figure 1. In order to have sufficient startup
ability, the V
CC
capacitor is 6.8
μ
F which gives a 3.4 ms fault
sampling time. Because of this feature, the circuit enters
fault mode when output current exceeds 200mA after startup
as shown in Figure 10(b). The efficiency of the circuit is
typically 65% at 100 mA.
Table 2. Bill of Material of Buck Demo Board
Part No
Description
Manufacturer
IC
NCP1052ST136
Switching Regulator
ON Semiconductor
D, D
1
D
2
D
3
Z
1
Z
2
R
1
C
MURS160T3
1A 600V ultrafast
ON Semiconductor
MMSD914T1
General diode
ON Semiconductor
MRA4005T1
1A 600V standard recovery
ON Semiconductor
MMSZ12T1
12V 5% zener
ON Semiconductor
MMSZ6V8T1
6.8V 5% zener
ON Semiconductor
CRCW08052001FRT1
2 k
220
μ
F, 16 V, tantalum
0.22
μ
F, 25 V, ceramic
6.8
μ
F, 16V, tantalum
400V 10
μ
F
680
μ
H
Vishay
594D227X9016R2T
Vishay
C
1
C
2
C
3
L
VJ1206Y224KXXAT
Vishay
595D685X9016A2T
Vishay
400WA10M12.5X16
Rubycon
UP2B-681
Cooper
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