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AN3339 Datasheet(PDF) 10 Page - STMicroelectronics

No. de pieza AN3339
Descripción Electrónicos  185 W power supply with PFC and standby supply for LED TV
PDF  44 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3339 Datasheet(HTML) 10 Page - STMicroelectronics

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Efficiency measurement
AN3339
10/44
Doc ID 18449 Rev 2
2
Efficiency measurement
Table 1 and 2 show the overall efficiency, measured at both nominal mains voltages. At 230
Vac the full load efficiency is 93.3 % and at 115 Vac it is 90.8 %. Average efficiency
measured at 25 %, 50 %, 75 %, and 100 % of nominal load is higher than 90 %.
The average efficiency has been calculated according to ENERGY STAR® 2.0 criteria.
Results are summarized in the following figures.
Table 1.
Overall efficiency measured at 230 Vac and 115 Vac mains voltage
Test
230 V - 50 Hz
12 V
24 V
130 V
5 V
Pout[W]
Pin[W]
Eff.[%]
Vout
[V]
Iout
[A]
Vout
[V]
Iout
[A]
Vout
[V]
Iout
[A]
Vout
[V]
Iout
[A]
25 % load eff.
11.95
1.00
24.19
0.50
128.89
0.15
5.05
0.50
46.09
52.00
88.6
50 % load eff.
11.93
2.01
24.28
1.00
129.95
0.31
5.04
1.00
93.30
101.50
91.9
75 % load eff.
11.90
3.01
24.38
1.50
131.05
0.47
5.04
1.50
141.67
151.90
93.3
100 % load eff.
11.88
3.99
24.48
2.00
132.18
0.62
5.04
2.00
187.96
201.50
93.3
Average eff.
91.8
Test
115 V - 60 Hz
12 V
24 V
130 V
5 V
Pout[W]
Pin[W]
Eff.[%]
Vout
[V]
Iout
[A]
Vout
[V]
Iout
[A]
Vout
[V]
Iout
[A]
Vout
[V]
Iout
[A]
25 % load eff.
11.95
1.00
24.19
0.50
128.89
0.15
5.05
0.50
46.09
52.35
88.0
50 % load eff.
11.93
2.01
24.28
1.00
129.95
0.31
5.04
1.00
93.30
102.85
90.7
75 % load eff.
11.90
3.01
24.38
1.50
131.05
0.47
5.04
1.50
141.67
154.92
91.4
100 % load eff.
11.87
3.99
24.47
2.00
132.15
0.62
5.04
2.00
187.76
206.84
90.8
Average eff.
90.2



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