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AN4164 Datasheet(PDF) 13 Page - STMicroelectronics

Part # AN4164
Description  This document describes a 12 V-350 mA power supply set in non-isolated flyback topology
PDF  38 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4164 Datasheet(HTML) 13 Page - STMicroelectronics

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AN4164
Testing the board
Doc ID 023660 Rev 1
13/38
5.2
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-biasing or external biasing).
Table 4.
Output voltage line-load regulation
VIN [VAC]
VOUT[V]
No load
50% load
75% load
100% load
IC externally
biased
IC self
biased
IC externally
biased
IC self
biased
IC externally
biased
IC self
biased
IC externally
biased
IC self
biased
90
12.04
12.05
12.00
11.98
12.00
11.98
11.99
11.97
115
12.05
12.05
12.00
11.99
12.00
11.98
11.99
11.97
150
12.05
12.05
12.00
11.98
12.00
11.98
11.99
11.97
180
12.05
12.04
12.00
11.98
12.00
11.98
11.99
11.97
230
12.05
12.04
12.00
11.98
12.00
11.98
11.99
11.97
265
12.05
12.04
12.00
11.98
12.00
11.98
11.99
11.97
Figure 13.
Line regulation, IC externally
biased (J1 selected)
Figure 14.
Line regulation, IC self-biased
(J1 not selected)
AM11688v1
11.7
11.8
11.9
12
12.1
12.2
80
105
130
155
180205
230
255
V
IN[VAC]
0
25%
50%
75%
100%
AM11689v1
11.7
11.8
11.9
12
12.1
12.2
80
105
130
155
180205
230
255
V
IN [VAC]
0
25%
50%
75%
100%
Figure 15.
Load regulation, IC externally
biased (J1 selected)
Figure 16.
Load regulation, IC self-biased
(J1 not selected)
AM11690v1
11.7
11.8
11.9
12
12.1
12.2
0
0.05
0.1
0.15
0.2
0.25
0.3
0.350.4
I
OUT [A]
90
115
230
265
AM11691v1
11.7
11.8
11.9
12
12.1
12.2
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
I
OUT [A]
90
115
230
265



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