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AN4165 bảng dữ liệu(PDF) 13 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  This document describes a 12 V - 1 A power supply set in non-isolated flyback topology
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AN4165
Line/load regulation and output voltage ripple
Doc ID 023661 Rev 1
13/37
6
Line/load regulation and output voltage ripple
The output voltage of the board has been measured in different line and load conditions.
The results are shown in
Table 4. The output voltage is practically unaffected by the line
condition.
The ripple at the switching frequency superimposed at the output voltage has also been
measured and the results are given in
Table 5.
Table 4.
Output voltage line-load regulation
VIN [VAC]
VOUT[V]
No load
50% load
75% load
100% load
90
11.94
11.91
11.92
11.92
115
11.94
11.91
11.92
11.92
150
11.94
11.92
11.91
11.91
180
11.94
11.92
11.91
11.91
230
11.94
11.92
11.91
11.91
265
11.94
11.92
11.91
11.91
Figure 12.
Line regulation
Figure 13.
Load regulation
AM13366v1
11.7
11.8
11.9
12
12.1
80
105
130155
180
205
230255
VI
N[VAC]
0
25%
50%
75%
100%
AM13367v1
11.7
11.8
11.9
12
12.1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
1.1
Iout[A]
90
115
230
265
Table 5.
Output voltage ripple at half and full load
VIN [VAC]
VOUT [mV]
Half load
Full load
90
17
23
115
16
21
230
18
25
265
17
24



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