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AN3028 Datasheet(PDF) 12 Page - STMicroelectronics

Part # AN3028
Description  demonstration board using the VIPer16LN
PDF  37 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3028 Datasheet(HTML) 12 Page - STMicroelectronics

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Line-load regulation and output voltage ripple
AN3028
12/37
Doc ID 16135 Rev 1
5
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 not affected by the line
condition and by the IC biasing (self-supply or not).
The ripple at the switching frequency superimposed at the output voltage has also been
measured and the results are shown in Table 5. The board is provided with an LC filter to
better filter the voltage ripple.
Table 4.
Output voltage line-load regulation
VINAC
(V)
Vout
No load
50% load
75% load
100% load
Without
self-supply
With
self-supply
Without
self-supply
With
self-supply
Without
self-supply
With
self-supply
Without
self-supply
With
self-supply
90
15.91
15.91
15.72
15.73
15.74
15.75
15.76
15.76
115
15.91
15.92
15.71
15.71
15.72
15.73
15.74
15.73
150
15.91
15.92
15.70
15.70
15.72
15.71
15.72
15.71
180
15.91
15.92
15.69
15.69
15.71
15.70
15.69
15.67
230
15.91
15.92
15.69
15.69
15.67
15.67
15.66
15.65
265
15.91
15.92
15.69
15.69
15.69
15.66
15.65
15.65
Figure 10.
Line regulation
Figure 11.
Load regulation



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