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參數(shù)資料
| 型號： | AND8031 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Isolated Precision Regulation of a Single 1.8 Volt Output from a Universal Line Input |
| 中文描述： | 孤立調(diào)節(jié)精度1.8伏單從通用線路輸入輸出 |
| 文件頁數(shù)： | 4/12頁 |
| 文件大?。?/td> | 117K |
| 代理商： | AND8031 |
AND8031/D
http://onsemi.com
4
TL431
TLV431
NCP100
36
3.75
3.2
16
2.5
1.95
6.0
2.15
1.6
Extended
Range with
PNP
Figure 6. Power Supply Output Voltage Range
Comparison for Programmable Precision References
P
O
Figure 5 illustrates an additional 1.0 uF capacitor, C3,
which is required for normal operation of the NCP100.
Bandwidth concerns are raised when a capacitor is placed
from the cathode to anode of the precision reference. Since
the PNP transistor is used to drive the optocoupler, the
cathode current of the NCP100 is amplified by the beta of the
transistor therefore minimizing the effects of C3. R3 is a
factor in the overall gain of the feedback network and R4
limits the current into the diode of the optocoupler. The
roll–off frequency of the feedback network is related to R1
and C2 only. Figure 7 shows the circuit schematic, the gain
and the phase of the TLV431 and the NCP100 with and
without the PNP.
R1
U1
R2
C2
V
out
GND
R3
R1
C3
Q1
U1
R2
C2
V
out
GND
R3
R4
C3
R
OSC
R
OSC
Figure 7. Schematics for Gain and Phase Comparison of TLV431 and NCP100
Note: C3 only for NCP100
20
10
0
30
–10
–20
40
40
70
60
Figure 8. TLV431 with PNP
50
Figure 9. TLV431 without PNP
Gain
Phase
Gain
Phase
–30
180
90
0
–90
–180
P
°
)
G
180
90
0
–90
–180
G
P
°
)
10
100
1 k
10 k
100 k
Frequency (Hz)
10
100
1 k
10 k
100 k
Frequency (Hz)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AND8031D | Isolated Precision Regulation of a Single 1.8 Volt Output from a Universal Line Input |
| AND8039 | The One-Transistor Forward Converter |
| AND8044 | Single-Channel 1206A ChipFET TM Power MOSFET Recommended Pad Pattern and Thermal Performance |
| AND8048 | Dual P-Channel 1.8 V (G-S) MOSFET |
| AND8048D | Dual P-Channel 1.8 V (G-S) MOSFET |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AND8031D | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Isolated Precision Regulation of a Single 1.8 Volt Output from a Universal Line Input |
| AND8039 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:The One-Transistor Forward Converter |
| AND8044 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Single-Channel 1206A ChipFET TM Power MOSFET Recommended Pad Pattern and Thermal Performance |
| AND8044/D | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Single-Channel 1206A ChipFET TM Power MOSFET Recommended Pad Pattern and Thermal Performance |
| AND8048 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Dual P-Channel 1.8 V (G-S) MOSFET |
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