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AN3329 Folha de dados(PDF) 9 Page - STMicroelectronics

Nome de Peças AN3329
Descrição Electrónicos  This application note describes the characteristics and features
PDF  47 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3329 Folha de dados(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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