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AN3329 Scheda tecnica(PDF) 9 Page - STMicroelectronics

Il numero della parte AN3329
Spiegazioni elettronici  This application note describes the characteristics and features
PDF  47 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3329 Scheda tecnica(HTML) 9 Page - STMicroelectronics

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AN3329
Efficiency measurement
Doc ID 18376 Rev 1
9/47
2
Efficiency measurement
Table 1 shows the overall efficiency, measured at different mains voltages. The full load
efficiency is 90.09 % at 115 Vac, and 91.85 % at 230 Vac. Both values are considerably high
and maintained high even decreasing the load as reported in Table 1. Measurements are
also reported in the graph of Figure 3.
Table 1.
Overall efficiency measured at different AC input voltages
Load = 100 %
5 V
12 V
24 V
Pout
Pin
Eff.
Vin [Vrms]
Vout [V]
Iout [A]
Vout [V]
Iout [A]
Vout [V]
Iout [A]
[W]
[W]
[%]
90
5.01
1.99
11.69
2.01
23.47
5.98
173.8
197.5
88.00 %
115
5.01
1.99
11.69
2.01
23.48
5.98
173.9
193.6
90.09 %
230
5.01
1.99
11.69
2.01
23.48
5.98
173.8
189.3
91.85 %
265
5.01
1.99
11.69
2.01
23.48
5.98
173.8
188.9
91.98 %
Load = 75 %
5 V
12 V
24 V
Pout
Pin
Eff.
Vin [Vrms]
Vout [V]
Iout [A]
Vout [V]
Iout [A]
Vout [V]
Iout [A]
[W]
[W]
[%]
90
5.01
1.51
11.70
1.51
23.49
4.50
130.9
147.5
88.78 %
115
5.01
1.51
11.70
1.51
23.49
4.50
130.9
145.5
89.96 %
230
5.01
1.51
11.70
1.51
23.49
4.50
130.9
143.0
91.56 %
265
5.01
1.51
11.70
1.51
23.49
4.50
130.9
142.7
91.73 %
Load = 50 %
5 V
12 V
24 V
Pout
Pin
Eff.
Vin [Vrms]
Vout [V]
Iout [A]
Vout [V]
Iout [A]
Vout [V]
Iout [A]
[W]
[W]
[%]
90
5.01
1.00
11.71
1.01
23.51
3.00
87.5
98.6
88.67 %
115
5.01
1.00
11.72
1.01
23.51
3.00
87.5
97.7
89.54 %
230
5.01
1.00
11.71
1.01
23.51
3.00
87.5
96.6
90.53 %
265
5.01
1.00
11.71
1.01
23.51
3.00
87.5
96.5
90.64 %
Load = 25 %
5 V
12 V
24 V
Pout
Pin
Eff.
Vin [Vrms]
Vout [V]
Iout [A]
Vout [V]
Iout [A]
Vout [V]
Iout [A]
[W]
[W]
[%]
90
5.02
0.49
11.72
0.50
23.53
1.51
43.83
50.82
86.25 %
115
5.02
0.49
11.72
0.50
23.53
1.51
43.83
50.57
86.67 %
230
5.02
0.49
11.72
0.50
23.53
1.51
43.83
50.47
86.85 %
265
5.02
0.49
11.72
0.50
23.53
1.51
43.83
50.29
87.16 %



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