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AN4116 Datasheet(PDF) 14 Page - STMicroelectronics

Part # AN4116
Description  This document describes a 12 V-350 mA power supply
PDF  38 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4116 Datasheet(HTML) 14 Page - STMicroelectronics

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Testing the board
AN4116
14/38
Doc ID 023220 Rev 1
5.2
Precision of the regulation and output voltage ripple
The output voltage of the board has been measured in different line and load conditions with
the results shown in
Table 4. The output voltage is practically not affected by the line
condition and by the IC biasing (self-supply or not).
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 at different loads; IC
externally biased (J1 selected)
Figure 14.
Line regulation at different loads; IC
self-biased (J1 not selected)
AM11688v1
11.7
11.8
11.9
12
12.1
12.2
80
105
130
155
180
205
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
180
205
230
255
V
IN [V AC]
0
25%
50%
75%
100%



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