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AN4116 Arkusz danych(PDF) 20 Page - STMicroelectronics

Numer części AN4116
Szczegółowy opis  This document describes a 12 V-350 mA power supply
PDF  38 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4116 Arkusz danych(HTML) 20 Page - STMicroelectronics

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Testing the board
AN4116
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Doc ID 023220 Rev 1
Another requirement (EuP lot 6) is that the input power should be less than 500 mW when
the converter is loaded with 250 mW. The performance is shown in
Figure 26 for IC
externally biased and in
Figure 27 for self-biasing.
Figure 24.
Efficiency @ PIN=1 W; IC externally
biased (J1 selected)
Figure 25.
Efficiency @ PIN=1 W; IC self-
biased (J1 not selected)
AM11545v1
40
45
50
55
60
65
70
75
80
80
110
140
170
200
230260
V
IN [V AC]
AM11546v1
35
40
45
50
55
60
65
70
75
80
80
110
140
170
200
230260
V
IN[VAC]
Figure 26.
PIN @ POUT = 250 mW; IC externally
biased (J1 selected)
Figure 27.
PIN @ POUT = 250 mW; IC self-
biased (J1 not selected)
AM13108v1
0.25
0.3
0.35
0.4
0.45
0.5
80
110
140
170
200
230260
V
IN [V AC]
AM13109v1
0.25
0.3
0.35
0.4
0.45
0.5
0.55
0.6
0.65
0.7
0.75
0.8
80
110
140
170
200
230260
V
IN [V AC]



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